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  • View Data Sheet

    Description:

    Leukemia Inhibitory Factor Human Recombinant

    CDF, HILDA, D-FACTOR, Differentiation- stimulating factor, Melanoma-derived LPL inhibitor, MLPLI, Emfilermin, Leukemia inhibitory factor, LIF, DIA.

    Product # :

    CYT-644

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    Description

    Leukemia Inhibitory Factor (LIF) Human Recombinant produced in E.Coli is a single, non-glycosylated, polypeptide chain containing 180 amino acids and having a molecular mass of 19.7kDa. The Leukemia Inhibitory Factor (LIF) is purified by proprietary chromatographic techniques.

    Source

    Escherichia Coli.

    Formulation

    Leukemia Inhibitory Factor (LIF) was lyophilized from a concentrated (1mg/ml) sterile solution containing 1xPBS pH 7.4.

    Purity

    Greater than 98.0% as determined by:
    (a) Analysis by RP-HPLC.
    (b) Analysis by SDS-PAGE.

    Biological Activity

    The ED50 was determined by the M1 cell differentiation assay is < 0.01 ng/ml, corresponding to a specific activity of 100,000,000IU/mg.

    More Info

    • Introduction

      Leukemia Inhibitory Factor also called LIF is a lymphoid factor that promotes long-term maintenance of embryonic stem cells by suppressing spontaneous differentiation. Leukemia Inhibitory Factor has several functions such as cholinergic neuron differentiation, control of stem cell pluripotency, bone & fat metabolism, mitogenesis of factor dependent cell lines & promotion of megakaryocyte production in vivo. Human and mouse LIF exhibit a 78% identity in its amino acid sequence.

    • Synonyms

      CDF, HILDA, D-FACTOR, Differentiation- stimulating factor, Melanoma-derived LPL inhibitor, MLPLI, Emfilermin, Leukemia inhibitory factor, LIF, DIA.

    • Physical Appearance

      Sterile Filtered White lyophilized (freeze-dried) powder.

    • Stability

      Lyophilized Leukemia Inhibitory Factor (LIF) although stable at room temperature for 3 weeks, should be stored desiccated below -18°C. Upon reconstitution Leukemia Inhibitory Factor (LIF) should be stored at 4°C between 2-7 days and for future use below -18°C.For long term storage it is recommended to add a carrier protein (0.1% HSA or BSA).Please prevent freeze-thaw cycles.

    • Solubility

      It is recommended to reconstitute the lyophilized Leukemia Inhibitory Factor (LIF) in sterile water not less than 100µg/ml, which can then be further diluted to other aqueous solutions.

    • Amino Acid Sequence

      SPLPITPVNA TCAIRHPCHN NLMNQIRSQL AQLNGSANAL FILYYTAQGE PFPNNLDKLC GPNVTDFPPF HANGTEKAKL VELYRIVVYL GTSLGNITRD QKILNPSALS LHSKLNATAD ILRGLLSNVL CRLCSKYHVG HVDVTYGPDT SGKDVFQKKK LGCQLLGKYK QIIAVLAQAF.

    • Background

      Leukemia Inhibitory Factor (LIF) Background

      Leukemia Inhibitory Factor (LIF) is a cytokine within the interleukin-6 family. It is influential in the hypothalamus and involved in energy balance.

      LIF stimulates ACTH secretion and affects the stress and immune response in the body. Administration of LIF has been shown to correct low plasma ACTH and repair hypothalamic-pituitary-adrenal (HPA) axis responses.

      Function and Applications of LIF

      LIF prevents the proliferation of myeloid leukemia cells by inducing their terminal differentiation. Beyond cancer, LIF influences bone metabolism, embryogenesis, and inflammation.

      Moreover, it supports the self-renewal of stem cells in culture by activating Stat3, thus preventing spontaneous differentiation, and is studied for potential benefits in fertility treatments.

      Structure and Interactions

      LIF's structure consists of a four alpha-helix bundle similar to other hematopoietic cytokines. It interacts with components such as the ciliary neurotrophic factor (CNTF) through multimeric receptors, influencing both cytokine's effects on cells. This interaction is crucial for forming high-affinity binding sites that mediate their biological activities.

    ProSpec's products are furnished for LABORATORY RESEARCH USE ONLY. The product may not be used as drugs, agricultural or pesticidal products, food additives or household chemicals.

    Lif Human
  • View Data Sheet

    Description:

    Coagulation Factor III Active Human Recombinant

    Tissue factor, TF, Coagulation factor III, CD142.

    Product # :

    PRO-2845

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    Description

    Recombinant Human Tissue Factor Active is a glycosylated, polypeptide chain containing 225 amino acids and having a total molecular mass of 45.0kDa. Coagulation Factor III is fused at C-terminus & is purified by proprietary chromatographic techniques.

    Source

    CHO cells.

    Formulation

    Lyophilized from a 0.2μm filtered solution in 20mM Tris and 150mM NaCl, pH 8.0.

    Purity

    Greater than 98.0% as determined by Analysis by SDS-PAGE.

    Biological Activity

    The ED50 was determined by its ability to activate fluorogenic peptide substrate Boc-VPR-AMC cleavage, when bound in 1:1 complex with Coagulation Factor VII.

    More Info

    • Synonyms

      Tissue factor, TF, Coagulation factor III, CD142.

    • Physical Appearance

      Sterile Filtered White lyophilized (freeze-dried) powder.

    • Stability

      Lyophilized Coagulation Factor III although stable at room temperature for 3 weeks, should be stored desiccated below -18°C. Upon reconstitution Tissue Factor should be stored at 4°C between 2-7 days and for future use below -18°C.
      Please prevent freeze-thaw cycles.

    • Solubility

      It is recommended to reconstitute the lyophilized Coagulation Factor III in sterile 18MΩ-cm H2O not less than 100µg/ml, which can then be further diluted to other aqueous solutions.

    • Amino Acid Sequence

      SGTTNTVAAY NLTWKSTNFK TILEWEPKPV NQVYTVQIST KSGDWKSKCF YTTDTECDLT DEIVKDVKQT YLARVFSYPA GNVESTGSAG EPLYENSPEF TPYLETNLGQ PTIQSFEQVG TKVNVTVEDE RTLVRRNNTF LSLRDVFGKD LIYTLYYWKS SSSGKKTAKT NTNEFLIDVD KGENYCFSVQ AVIPSRTVNR KSTDSPVECM GQEKGEFREH HHHHH.

    • Background

      Tissue Factor is the main initiator of the extrinsic blood coagulation pathway. after vascular injury, Tissue Factor binds circulating Factor VII/VIIa, forming the TF–FVIIa complex, which activates Factors IX and X, leading to thrombin generation and fibrin clot formation. Tissue Factor also participates in cell signalling influencing inflammation, angiogenesis, wound healing, and tumor progression.

      What is the molecular weight / Mw of Tissue Factor Protein?
      Tissue Factor Protein has a total Mw of 45kDa.

      What is the source or expression system of Tissue Factor Protein?
      CHO Cells

      What is the Purity of Tissue Factor Protein?
      Tissue Factor Protein is >98% pure as determined by SDS-PAGE.

      What is the Biological Activity of Tissue Factor Protein?
      The enzymatic activity was determined by its ability to activate fluorogenic peptide substrate Boc-VPR-AMC cleavage, when bound in 1:1 complex with Coagulation Factor VII.

      What is the amino acid sequence of Tissue Factor Protein?
      SGTTNTVAAY NLTWKSTNFK TILEWEPKPV NQVYTVQIST KSGDWKSKCF YTTDTECDLT DEIVKDVKQT YLARVFSYPA GNVESTGSAG EPLYENSPEF TPYLETNLGQ PTIQSFEQVG TKVNVTVEDE RTLVRRNNTF LSLRDVFGKD LIYTLYYWKS SSSGKKTAKT NTNEFLIDVD KGENYCFSVQ AVIPSRTVNR KSTDSPVECM GQEKGEFREH HHHHH

      What applications can Tissue Factor Protein be used in?
      Tissue Factor Protein can probably be used in western blot, ELISA and Lateral Flow.

      What is the endotoxin level for Tissue Factor Protein?
      The endotoxin level is minimal, Tissue Factor Protein was purified using conventional chromatography techniques.

    ProSpec's products are furnished for LABORATORY RESEARCH USE ONLY. The product may not be used as drugs, agricultural or pesticidal products, food additives or household chemicals.

    Tissue Factor Human, Active
  • View Data Sheet

    Description:

    IFN Beta Mouse Recombinant, His Tag

    Leukocyte IFN, B cell IFN, Type I IFN, IFNB1, IFB, IFF, IFNB, IFN-b 1b, MGC96956.

    Product # :

    CYT-651

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    • SDS-PAGE

    Description

    IFN beta Mouse Recombinant produced in E.Coli is a single, non-glycosylated polypeptide chain containing 182 amino acids (22-182 a.a.) and having a molecular mass of 22 kDa. Mouse IFN beta is fused to 21 amino acid at N-terminus and purified by proprietary chromatographic techniques.

    Source

    Escherichia Coli.

    Formulation

    The IFN-Beta (0.25mg/ml) contains 20mM HEPES (pH6.0), 0.5M NaCl, 10% glycerol.

    Purity

    Greater than 95% as determined by Analysis by SDS-PAGE.

    SDS-PAGE

    More Info

    • Introduction

      IFN-beta 1b has antiviral, antibacterial and anticancer activities.
      Influenza A viruses not only inhibit IFN-beta gene induction but also supress Type-I IFN signaling via mechanism involving induction of the SOCS-3 protein.
      Intracellular bacteria and cytosolic poly (dA-dT) trigger IFN-beta responses in different human cells without requiring human ZBP1.

    • Synonyms

      Leukocyte IFN, B cell IFN, Type I IFN, IFNB1, IFB, IFF, IFNB, IFN-b 1b, MGC96956.

    • Physical Appearance

      Sterile filtered colorless solution.

    • Stability

      Store at 4°C if entire vial will be used within 2-4 weeks. Store, frozen at -20°C for longer periods of time. For long term storage it is recommended to add a carrier protein (0.1% HSA or BSA). Avoid multiple freeze-thaw cycles.

    • Amino Acid Sequence

      MGSSHHHHHH SSGLVPRGSH MINYKQLQLQ ERTNIRKCQE LLEQLNGKIN LTYRADFKIP MEMTEKMQKS YTAFAIQEML QNVFLVFRNN FSSTGWNETI VVRLLDELHQ QTVFLKTVLE EKQEERLTWE MSSTALHLKS YYWRVQRYLK LMKYNSYAWM VVRAEIFRNF LIIRRLTRNF QN.

    • Background

      What is the molecular weight/Mw of IFN B MOUSE, HIS Protein?
      IFN B MOUSE, HIS Protein has a total Mw of 22kDa.

      What is the source or expression system of IFN B MOUSE, HIS Protein?
      Escherichia Coli.

      What is the Purity of IFN B MOUSE, HIS Protein?
      IFN B MOUSE, HIS Protein is >95% pure as determined by SDS-PAGE.

      What is the Biological Activity of IFN B MOUSE, HIS Protein?
      The biological functionality of IFN B MOUSE, HIS Protein will be determined in the future.

      What is the amino acid sequence of IFN B MOUSE, HIS Protein?
      MGSSHHHHHH SSGLVPRGSH MINYKQLQLQ ERTNIRKCQE LLEQLNGKIN LTYRADFKIP MEMTEKMQKS YTAFAIQEML QNVFLVFRNN FSSTGWNETI VVRLLDELHQ QTVFLKTVLE EKQEERLTWE MSSTALHLKS YYWRVQRYLK LMKYNSYAWM VVRAEIFRNF LIIRRLTRNF QN.

      What applications can IFN B MOUSE, HIS Protein be used in?
      IFN B MOUSE, HIS Protein can probably be used in western blot, ELISA and Lateral Flow.

      What is the endotoxin level for IFN B MOUSE, HIS Protein?
      The endotoxin level is minimal, IFN B MOUSE, HIS Protein was purified using conventional chromatography techniques.


    ProSpec's products are furnished for LABORATORY RESEARCH USE ONLY. The product may not be used as drugs, agricultural or pesticidal products, food additives or household chemicals.

    Ifn B Mouse His
  • View Data Sheet

    Description:

    Kruppel-Like Factor 12 Human Recombinant

    AP-2rep, AP2REP, HSPC122, Krueppel-like factor 12, Transcriptional repressor AP-2rep.

    Product # :

    PRO-2090

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    Description

    KLF12 Human Recombinant produced in E.Coli is a single, non-glycosylated polypeptide chain containing 425 amino acids (1-402 a.a) and having a molecular mass of 46.6kDa.KLF12 is fused to a 23 amino acid His-tag at N-terminus & purified by proprietary chromatographic techniques.

    Source

    Escherichia Coli.

    Formulation

    KLF12 protein solution (0.5mg/ml) contains 20mM Tris-HCl buffer, (pH8.0) ,10% glycerol and 0.4M Urea.

    Purity

    Greater than 85.0% as determined by SDS-PAGE.

    More Info

    • Introduction

      Krueppel-like factor 12 (KLF12) belongs to the Kruppel-like zinc finger protein family and can repress expression of the AP-2 alpha gene by binding to a particular site in the AP-2 alpha gene promoter. AP-2 alpha (Activator protein-2 alpha) is a developmentally-regulated transcription factor and vital regulator of gene expression during vertebrate development and carcinogenesis. KLF12 gene repression entails binding with a corepressor, CtBP1.

    • Synonyms

      AP-2rep, AP2REP, HSPC122, Krueppel-like factor 12, Transcriptional repressor AP-2rep.

    • Physical Appearance

      Sterile Filtered clear solution.

    • Stability

      Store at 4°C if entire vial will be used within 2-4 weeks. Store, frozen at -20°C for longer periods of time. For long term storage it is recommended to add a carrier protein (0.1% HSA or BSA).Avoid multiple freeze-thaw cycles.

    • Amino Acid Sequence

      MGSSHHHHHH SSGLVPRGSH MGSMNIHMKR KTIKNINTFE NRMLMLDGMP AVRVKTELLE SEQGSPNVHN YPDMEAVPLL LNNVKGEPPE DSLSVDHFQT QTEPVDLSIN KARTSPTAVS SSPVSMTASA SSPSSTSTSS SSSSRLASSP TVITSVSSAS SSSTVLTPGP LVASASGVGG QQFLHIIHPV PPSSPMNLQS NKLSHVHRIP VVVQSVPVVY TAVRSPGNVN NTIVVPLLED GRGHGKAQMD PRGLSPRQSK SDSDDDDLPN VTLDSVNETG STALSIARAV QEVHPSPVSR VRGNRMNNQK FPCSISPFSI ESTRRQRRSE SPDSRKRRIH RCDFEGCNKV YTKSSHLKAH RRTHTGEKPY KCTWEGCTWK FARSDELTRH YRKHTGVKPF KCADCDRSFS RSDHLALHRR RHMLV.

    ProSpec's products are furnished for LABORATORY RESEARCH USE ONLY. The product may not be used as drugs, agricultural or pesticidal products, food additives or household chemicals.

    Klf12 Human
  • View Data Sheet

    Description:

    Charcot-Leyden Crystal Protein Human Recombinant

    Eosinophil lysophospholipase, Charcot-Leyden crystal protein, CLC, Galectin-10, Gal-10, Lysolecithin acylhydrolase, GAL10, LGALS10, LGALS10A.

    Product # :

    PRO-744

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    Description

    LGALS10 produced in E.Coli is a single, non-glycosylated polypeptide chain containing 162 amino acids (1-142 a.a.) and having a molecular mass of 18.6kDa.LGALS10 is fused to a 20 amino acid His-tag at N-terminus & purified by proprietary chromatographic techniques.

    Source

    Escherichia Coli.

    Formulation

    Galectin-10 protein solution (0.5mg/ml) containing 20mM Tris-HCl buffer (pH 8.0), 1mM DTT, 10% glycerol and 0.1M NaCl.

    Purity

    Greater than 90.0% as determined by SDS-PAGE.

    More Info

    • Introduction

      Eosinophil lysophospholipase (CLC) acts on biological membranes to regulate the multifunctional lysophospholipids. CLC is a lysophospholipase expressed in eosinophils and basophils. CLC hydrolyzes lysophosphatidylcholine to glycerophosphocholine and a free fatty acid. The CLC protein may possess carbohydrate or IgE-binding activities. CLC is both structurally and functionally related to the galectin family of beta-galactoside binding proteins. CLC may be linked with inflammation and some myeloid leukemias.

    • Synonyms

      Eosinophil lysophospholipase, Charcot-Leyden crystal protein, CLC, Galectin-10, Gal-10, Lysolecithin acylhydrolase, GAL10, LGALS10, LGALS10A.

    • Physical Appearance

      Sterile Filtered colorless solution.

    • Stability

      Store at 4°C if entire vial will be used within 2-4 weeks. Store, frozen at -20°C for longer periods of time. For long term storage it is recommended to add a carrier protein (0.1% HSA or BSA).Avoid multiple freeze-thaw cycles.

    • Amino Acid Sequence

      MGSSHHHHHH SSGLVPRGSH MSLLPVPYTE AASLSTGSTV TIKGRPLACF LNEPYLQVDF HTEMKEESDI VFHFQVCFGR RVVMNSREYG AWKQQVESKN MPFQDGQEFE LSISVLPDKY QVMVNGQSSY TFDHRIKPEA VKMVQVWRDI SLTKFNVSYL KR.

    ProSpec's products are furnished for LABORATORY RESEARCH USE ONLY. The product may not be used as drugs, agricultural or pesticidal products, food additives or household chemicals.

    Lgals10 Human
  • View Data Sheet

    Description:

    Prolactin Ovine Recombinant

    Mammotropin, Luteotropic hormone, Luteotropin, PRL.

    Product # :

    CYT-240

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    Description

    Prolactin Ovine Recombinant produced in E.Coli is a single, non-glycosylated polypeptide chain containing 199 amino acids and having a molecular mass of 23 kDa. The Prolactin n is purified by proprietary chromatographic techniques.

    Source

    Escherichia Coli.

    Formulation

    The protein was lyophilized from a concentrated (1mg/ml) solution with 0.02-0.03% NaHCO3.

    Purity

    Greater than 99.0% as determined by:
    (a) Gel filtration analysis.
    (b) Analysis by SDS-PAGE.

    Biological Activity

    Is fully biologically active as evidenced by inducing proliferation of Nb2 cells.

    More Info

    • Introduction

      Prolactin is a neuroendocrine hormone synthesized primarily by the pituitary gland but also a variety of other cell types including the placenta, brain and uterus. Its primary function is to promote and maintain lactation but has also been shown to have a role in breast cancer development, regulation of reproductive function and immunoregulation.

    • Synonyms

      Mammotropin, Luteotropic hormone, Luteotropin, PRL.

    • Physical Appearance

      Sterile Filtered White lyophilized (freeze-dried) powder.

    • Stability

      Lyophilized Prolactin although stable at room temperature for 3 weeks, should be stored desiccated below -18°C. Upon reconstitution Prl should be stored at 4°C between 2-7 days and for future use below -18°C.For long term storage it is recommended to add a carrier protein (0.1% HSA or BSA).Please prevent freeze-thaw cycles.

    • Solubility

      It is recommended to reconstitute the lyophilized Prolactin in sterile 18MΩ-cm H2O or 0.4% NaHCO3 adjusted to pH 8-9, not less than 100µg/ml, which can then be further diluted to other aqueous solutions.

    • Amino Acid Sequence

      The sequence of the first six N-terminal amino acids was determined and was found to be Ala-Thr-Pro-Val-Cys-Pro.

    • Protein content

      Protein quantitation was carried out by UV spectroscopy at 280 nm using the absorbency value of 0.93 as the extinction coefficient for a 0.1% (1mg/ml) solution. This value is calculated by the PC DNAman computer analysis program of protein sequences.

    ProSpec's products are furnished for LABORATORY RESEARCH USE ONLY. The product may not be used as drugs, agricultural or pesticidal products, food additives or household chemicals.

    Prolactin Ovine
  • View Data Sheet

    Description:

    Beta Lactamase E.Coli Recombinant, His Active

    Beta-lactamase, Cephalosporinase, ampC, ampA, b4150, JW4111.

    Product # :

    ENZ-1033

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    Description

    LACTB produced in E.Coli is a single, non-glycosylated polypeptide chain containing 379 amino acids (20-377 a.a) and having a molecular mass of 41.8kDa. LACTB is fused to a 20 amino acid His-tag at N-terminus & purified by proprietary chromatographic techniques.

    Source

    Escherichia Coli.

    Formulation

    The LACTB solution (1mg/ml) contains 20mM Tris-HCl buffer (pH 8.0) and 10% glycerol.

    Purity

    Greater than 95.0% as determined by SDS-PAGE.

    Biological Activity

    Specific activity is >700 units/mg, in which One unit will hydrolyze 1.0umole of Nitrocefin per minute at pH 7.0 at 37°C.

    More Info

    • Introduction

      Beta-lactamase is a type of enzyme (EC 3.5.2.6) produced by some bacteria that is responsible for their resistance to beta-lactam antibiotics like penicillins, cephalosporins, cephamycins and carbapenems. These antibiotics have a common element in their molecular structure: a four-atom ring known as a beta-lactam. The lactamase enzyme breaks that ring open, deactivating the molecule's antibacterial properties.

    • Synonyms

      Beta-lactamase, Cephalosporinase, ampC, ampA, b4150, JW4111.

    • Physical Appearance

      Sterile Filtered colorless solution.

    • Stability

      Store at 4°C if entire vial will be used within 2-4 weeks. Store, frozen at -20°C for longer periods of time. For long term storage it is recommended to add a carrier protein (0.1% HSA or BSA).Avoid multiple freeze-thaw cycles.

    • Amino Acid Sequence

      MGSSHHHHHH SSGLVPRGSH MAPQQINDIV HRTITPLIEQ QKIPGMAVAV IYQGKPYYFT WGYADIAKKQ PVTQQTLFEL GSVSKTFTGV LGGDAIARGE IKLSDPTTKY WPELTAKQWN GITLLHLATY TAGGLPLQVP DEVKSSSDLL RFYQNWQPAW APGTQRLYAN SSIGLFGALA VKPSGLSFEQ AMQTRVFQPL KLNHTWINVP PAEEKNYAWG YREGKAVHVS PGALDAEAYG VKSTIEDMAR WVQSNLKPLD INEKTLQQGI QLAQSRYWQT GDMYQGLGWE MLDWPVNPDS IINGSDNKIA LAARPVKAIT PPTPAVRASW VHKTGATGGF GSYVAFIPEK ELGIVMLANK NYPNPARVDA AWQILNALQ.

    ProSpec's products are furnished for LABORATORY RESEARCH USE ONLY. The product may not be used as drugs, agricultural or pesticidal products, food additives or household chemicals.

    Lactb Ecoli His Active
  • View Data Sheet

    Description:

    Tumor Necrosis Factor-Alpha Human Recombinant

    TNF-alpha, Tumor necrosis factor ligand superfamily member 2, TNF-a, Cachectin, DIF, TNFA, TNFSF2.

    Product # :

    CYT-223

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    Description

    Tumor Necrosis Factor-a Human Recombinant produced in E.Coli is a single, non-glycosylated, polypeptide chain containing 158 amino acids (157 a.a. of the mature human TNF-alpha and an N-terminal methionine) and having a molecular mass of 17.5kDa. The TNF-alpha is purified by standard chromatographic techniques.

    Source

    Escherichia Coli.

    Formulation

    TNF-a Human was lyophilized from a concentrated 1mg/ml solution containing 20mM PB, pH-7.2, and 100mM NaCl.

    Purity

    Greater than 95.0% as determined by:
    (a) Analysis by RP-HPLC.
    (b) Analysis by SDS-PAGE.

    Biological Activity

    The Specific Activity is >5.0×107 IU/mg as determined by the cytolysis of murine L929 cells in the presence of Actinomycin D.

    More Info

    • Introduction

      Tumor necrosis factor is a cytokine involved in systemic inflammation and is a member of a group of cytokines that all stimulate the acute phase reaction. TNF is mainly secreted by macrophages.
      TNF causes apoptotic cell death, cellular proliferation, differentiation, inflammation, tumorigenesis and viral replication, TNF is also involved in lipid metabolism, and coagulation. TNF's primary role is in the regulation of immune cells.
      Dysregulation and, in particular, overproduction of TNF have been implicated in a variety of human diseases- autoimmune diseases, INS resistance, and cancer.

    • Synonyms

      TNF-alpha, Tumor necrosis factor ligand superfamily member 2, TNF-a, Cachectin, DIF, TNFA, TNFSF2.

    • Physical Appearance

      Sterile Filtered White lyophilized (freeze-dried) powder.

    • Stability

      Lyophilized Tumor Necrosis Factor-a although stable at room temperature for 3 weeks, should be stored desiccated below -18°C. Upon reconstitution TNF-a should be stored at 4°C between 2-7 days and for future use below -18°C.For long term storage it is recommended to add a carrier protein (0.1% HSA or BSA).Please prevent freeze-thaw cycles.

    • Solubility

      It is recommended to reconstitute the lyophilized Tumor Necrosis Factor-alpha in sterile 18MΩ-cm H2O not less than 100µg/ml, which can then be further diluted to other aqueous solutions.

    • Amino Acid Sequence

      MVRSSSRTPS DKPVAHVVAN PQAEGQLQWL NRRANALLAN GVELRDNQLV VPSEGLYLIY SQVLFKGQGC PSTHVLLTHT ISRIAVSYQT KVNLLSAIKS PCQRETPEGA E AKPWYEPIY LGGVFQLEKG DRLSAEINRP DYLDFAESGQ VYFGIIAL.

    • Background

      TNF Alpha Human: An Overview of Its Role and Importance in Immunology

      TNF alpha human, also known as Tumor Necrosis Factor-alpha, is a critical cytokine in the immune system. Macrophages mainly produce this protein, and it plays a key role in inflammation and the acute phase reaction.

      This protein is involved in various cellular functions, including cell death, differentiation, proliferation, and immune regulation.

      Production and Properties

      Tumor Necrosis Factor-alpha is produced recombinantly in E. coli and consists of a single, non-glycosylated polypeptide chain. It includes 157 amino acids of the mature human TNF-alpha and an N-terminal methionine, resulting in a molecular mass of approximately 17.5 kDa.

      Furthermore, the protein is purified through standard chromatographic techniques to ensure high purity and biological activity.

      Solubility and Usage

      The lyophilized form of TNF appears as a sterile, white powder. It is recommended to reconstitute this powder in sterile water to achieve a solution of no less than 100µg/ml.

      This solution can then be further diluted for various experimental applications. TNF alpha is used extensively in research, particularly for studying its effects on cell signaling and immune response.

      Storage and Stability

      For long-term storage, TNF should be kept desiccated below -18°C. Once reconstituted, it should be used within a week if stored at 4°C or kept below -18°C for future use. Avoiding freeze-thaw cycles is crucial to maintain the protein's functionality.

      Biological Role and Implications

      TNF alpha human is involved in the regulation of immune cells and is known for its role in inflammatory processes.

      Dysregulation of TNF alpha production is linked to various diseases, such as autoimmune disorders, insulin resistance, and cancer. It is also a target for therapeutic interventions, particularly in conditions like rheumatoid arthritis and inflammatory bowel disease.

      Mechanism of Action

      TNF alpha can induce fever, apoptotic cell death, and can inhibit tumorigenesis and viral replication. Moreover, it is a potent mediator of the acute phase reaction, which influences the activity of various cells involved in systemic inflammation.

      Research and Clinical Importance

      Scientific research on TNF has provided insights into its complex role in disease mechanisms. Its interaction with receptors such as TNFRSF1A underscores its multifaceted effects across different organ systems, from liver function to brain activity.

      Ongoing studies continue to explore its therapeutic potential, especially how it can be modulated to treat diseases without harmful side effects.

      In essence, TNF alpha human is a versatile and powerful component of the immune system, important for both health and disease. Understanding its pathways and functions helps scientists develop better treatments for various inflammatory and autoimmune diseases.



    ProSpec's products are furnished for LABORATORY RESEARCH USE ONLY. The product may not be used as drugs, agricultural or pesticidal products, food additives or household chemicals.

    Tnf Alpha Human
  • View Data Sheet

    Description:

    Avidin

    Avidin, AVD, AVID.

    Product # :

    PRO-500

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    Description

    Avidin is a glycosylated polypeptide chain having a molecular mass of 68kDa and containing 4 subunits each with a binding site for biotin. The Avidin is purified by affinity chromatographic techniques.The purification procedure ensures minimal contamination by other proteins or DNA.The resulting high activity and purity of the product gives very low non-specific binding (NSB).

    Source

    Hen's egg white.

    Biological Activity

    15.0 units/mg protein, 1 unit binds 1µg biotin.

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    • Introduction

      Avidin is a tetrameric protein of 4 identical subunits (homotetramer) each of which can bind to biotin with a high degree of affinity and specificity. Avidin molecular weight in its tetrameric form is estimated to be between 66-69 kDa. Avidin is produced in the oviducts of birds, reptiles and amphibians and is subsequently deposited in the whites of their eggs. In the chicken egg white, avidin makes up roughly 0.05% of total protein (approximately 1.8 mg per egg). 10% of Avidin’s molecular weight is ascribed to carbohydrate content which is composed of four to five mannose and three N-acetylglucosamine residues. Avidin has at least three distinctive oligosaccharide structural type which are similar in structure and composition. The dissociation constant (KD) of avidin is approximately 10-15M, making it one of the strongest known non-covalent bonds.

    • Synonyms

      Avidin, AVD, AVID.

    • Physical Appearance

      Sterile Filtered white lyophilized powder.

    • Stability

      Lyophilized Avidin although stable at room temperature for 3 weeks, should be stored desiccated below -18°C. Upon reconstitution Avidin should be stored at 4°C between 2-7 days and for future use below -18°C.For long term storage it is recommended to add a carrier protein (0.1% HSA or BSA).Please prevent freeze-thaw cycles.

    • Solubility

      It is recommended to reconstitute the lyophilized Avidin in sterile 18MΩ-cm H2O not less than 100µg/ml or more than 10mg/ml solutions.

    ProSpec's products are furnished for LABORATORY RESEARCH USE ONLY. The product may not be used as drugs, agricultural or pesticidal products, food additives or household chemicals.

    Avidin Avid
  • View Data Sheet

    Description:

    Vascular Endothelial Growth Factor (121 a.a.) Human Recombinant

    Vascular endothelial growth factor A, VEGF-A, Vascular permeability factor, VPF, VEGF, MGC70609.

    Product # :

    CYT-343

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    Description

    Vascular Endothelial Growth Factor-121 Human Recombinant produced in E.Coli is a non-glycosylated, polypeptide double chain containing 2x121 amino acids and having a molecular mass of 28.4kDa. VEGF121 circulates more freely than other VEGF forms, which bind more tightly with vascular heparin sulfates.

    Source

    Escherichia Coli.

    Formulation

    The protein was lyophilized from a concentrated (1mg/ml) solution with no additives.

    Purity

    Greater than 98.0% as determined by:
    (a) Analysis by RP-HPLC.
    (b) Analysis by SDS-PAGE.

    Biological Activity

    VEGF-121 has full biological activity when compared to standards. The activity is determined by the dose-dependent proliferation of HUVECs and is typically 1-6ng/ml corresponding to a specific activity of 166,667-1,000,000U/mg.

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    • Introduction

      Vascular endothelial growth factor is an important signaling protein involved in both vasculogenesis and angiogenesis. As its name implies, VEGF activity has been mostly studied on cells of the vascular endothelium, although it does have effects on a number of other cell types (e.g. stimulation monocyte/ macrophagemigration, neurons, cancer cells, kidney epithelial cells ).VEGF mediates increased vascular permeability, induces angiogenesis, vasculogenesis and endothelial cell growth, promotes cell migration, and inhibits apoptosis. In vitro, VEGF has been shown to stimulate endothelial cell mitogenesisand cell migration. VEGF is also a vasodilator and increases microvascular permeability and was originally referred to as vascular permeability factor.
      Elevated levels of this protein are linked to POEMS syndrome, also known as Crow-Fukase syndrome. Mutations in this gene have been associated with proliferative and nonproliferative diabetic retinopathy.

    • Synonyms

      Vascular endothelial growth factor A, VEGF-A, Vascular permeability factor, VPF, VEGF, MGC70609.

    • Physical Appearance

      Sterile Filtered White lyophilized (freeze-dried) powder.

    • Stability

      Lyophilized Vascular Endothelial Growth Factor 121 although stable at room temperature for 3 weeks, should be stored desiccated below -18°C. Upon reconstitution VEGF-121 should be stored at 4°C between 2-7 days and for future use below -18°C.For long term storage it is recommended to add a carrier protein (0.1% HSA or BSA).Please prevent freeze-thaw cycles.

    • Solubility

      It is recommended to reconstitute the lyophilized Vascular Endothelial Growth Factor -121 in sterile 18MΩ-cm H2O not less than 100µg/ml, which can then be further diluted to other aqueous solutions.

    • Amino Acid Sequence

      APMAEGGGQN HHEVVKFMDV YQRSYCHPIE TLVDIFQEYP DEIEYIFKPS CVPLMRCGGC CNDEGLECVP TEESNITMQI MRIKPHQGQH IGEMSFLQHN KCECRPKKDR ARQENCDKPR R

    ProSpec's products are furnished for LABORATORY RESEARCH USE ONLY. The product may not be used as drugs, agricultural or pesticidal products, food additives or household chemicals.

    Vegf121 Human
  • View Data Sheet

    Description:

    Prolactin Ovine Antagonsit Recombinant

    Mammotropin, Luteotropic hormone, Luteotropin, PRL.

    Product # :

    CYT-311

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    Description

    Prolactin Ovine Antagonist Recombinant produced in E.Coli is a single, non-glycosylated polypeptide chain containing 199 amino acids and having a molecular mass of 23kDa. Ovine Prolactin Antagonist is purified by proprietary chromatographic techniques.

    Source

    Escherichia Coli.

    Formulation

    Ovine Prolactin was lyophilized from a concentrated (1mg/ml) solution with 0.02%-0.03% NaHCO3.

    Purity

    Greater than 99.0% as determined by SDS-PAGE.

    Biological Activity

    Ovine Prolactin Antagonist is devoid of agonistic activity and capable of inhibiting biological activity of Ovine Prolactin or other lactogenic hormones as evidenced by proliferation assay of Nb2 or other cells.

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    • Introduction

      Prolactin is a lactogenic hormone secreted by the adenohypophysis .Besides its major action on lactation, in some species prolactin exerts effects on reproduction, maternal behavior, fat metabolism, immunomodulation and osmoregulation.Prolactin has been shown also to have cytokine-like activities and to have important immunoregulatory activities. It contributes to the development of lymphoid tissues and the maintenance of physiological immune function and also modulates a variety of T-cell immune responses. Prolactin has been reported to activate cellular proliferation in nonreproductive tissue, such as liver, spleen, and thymus. It induces significant proliferation in aortic smooth muscle cells and also enhances proliferation of these cells induced by PDGF . Prolactin also appears to be directly mitogenic for pancreatic beta cells. Prolactin is also mitogenic for cultured astrocytes.

    • Synonyms

      Mammotropin, Luteotropic hormone, Luteotropin, PRL.

    • Physical Appearance

      Sterile Filtered White lyophilized (freeze-dried) powder.

    • Stability

      Lyophilized Ovine Prolactin Antagonist although stable at room temperature for 3 weeks, should be stored desiccated below -18°C. Upon reconstitution Ovine Prolactin Antagonist should be stored at 4°C between 2-7 days and for future use below -18°C.For long term storage it is recommended to add a carrier protein (0.1% HSA or BSA).Please prevent freeze-thaw cycles.

    • Solubility

      It is recommended to reconstitute the lyophilized Ovine Prolactin Antagonist in sterile 18MΩ-cm H2O not less than 100µg/ml, which can then be further diluted to other aqueous solutions.

    • Amino Acid Sequence

      The sequence of the first five N-terminal amino acids was determined and was found to be Ala-Thr-Pro-Val-Cys-Pro.

    ProSpec's products are furnished for LABORATORY RESEARCH USE ONLY. The product may not be used as drugs, agricultural or pesticidal products, food additives or household chemicals.

    Prolactin Antagonist Ovine
  • View Data Sheet

    Description:

    Prolactin Antagonist Ovine Recombinant, Mutant

    Mammotropin, Luteotropic hormone, Luteotropin, PRL, Prolactin.

    Product # :

    CYT-705

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    Description

    Prolactin Ovine Antagonist Recombinant produced in E.Coli is a single, non-glycosylated polypeptide chain containing 199 amino acids and an additional Ala at N-terminus and having a molecular mass of 23kDa. The mutant R129G is DES 9 amino acids truncated form from its N-terminus which has higher inhibitory activity. Ovine Prolactin Antagonist is purified by proprietary chromatographic techniques.

    Source

    Escherichia Coli.

    Formulation

    Ovine Prolactin was lyophilized from a concentrated (1mg/ml) solution with 0.02%-0.03% NaHCO3.

    Purity

    Greater than 99.0% as determined by Gel Filtration & SDS-PAGE.

    Biological Activity

    Ovine Prolactin Antagonist mutant form is devoid of agonistic activity and capable of inhibiting biological activity of oPRL or other lactogenic hormones as evidenced by proliferation assay of Nb2 or other cells. The truncated form is more potent inhibitor.

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    • Introduction

      Prolactin is a lactogenic hormone secreted by the adenohypophysis .Besides its major action on lactation, in some species prolactin exerts effects on reproduction, maternal behavior, fat metabolism, immunomodulation and osmoregulation.Prolactin has been shown also to have cytokine-like activities and to have important immunoregulatory activities. It contributes to the development of lymphoid tissues and the maintenance of physiological immune function and also modulates a variety of T-cell immune responses. Prolactin has been reported to activate cellular proliferation in nonreproductive tissue, such as liver, spleen, and thymus. It induces significant proliferation in aortic smooth muscle cells and also enhances proliferation of these cells induced by PDGF . Prolactin also appears to be directly mitogenic for pancreatic beta cells. Prolactin is also mitogenic for cultured astrocytes.

    • Synonyms

      Mammotropin, Luteotropic hormone, Luteotropin, PRL, Prolactin.

    • Physical Appearance

      Sterile Filtered White lyophilized (freeze-dried) powder.

    • Stability

      Lyophilized Ovine Prolactin Antagonist although stable at room temperature for 3 weeks, should be stored desiccated below -18°C. Upon reconstitution Ovine Prolactin Antagonist should be stored at 4°C between 2-7 days and for future use below -18°C. For long term storage it is recommended to add a carrier protein (0.1% HSA or BSA). Please prevent freeze-thaw cycles.

    • Solubility

      It is recommended to reconstitute the lyophilized Ovine Prolactin Antagonist in sterile 18MΩ-cm H2O not less than 100µg/ml, which can then be further diluted to other aqueous solutions.

    • Amino Acid Sequence

      The sequence of the first five N-terminal amino acids was determined and was found to be Ala-Thr-Pro-Val-Cys-Pro.

    ProSpec's products are furnished for LABORATORY RESEARCH USE ONLY. The product may not be used as drugs, agricultural or pesticidal products, food additives or household chemicals.

    Prolactin Antagonist Ovine Mutant
  • View Data Sheet

    Description:

    Oncostatin M Human Recombinant (209 a.a.)

    OSM, MGC20461, Oncostatin M.

    Product # :

    CYT-639

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    Description

    Oncostatin-M (209 a.a.) Human Recombinant produced in E.Coli is a single, non-glycosylated polypeptide chain containing 209 amino acids and having a molecular mass of 23.9kDa. The Oncostatin-M (209 a.a.) is purified by proprietary chromatographic techniques.

    Source

    Escherichia Coli.

    Formulation

    Oncostatin-M (209 a.a.) was lyophilized from a concentrated (1mg/ml) solution containing 1x PBS pH-7.4.

    Purity

    Greater than 97.0% as determined by(a) Analysis by RP-HPLC.
    (b) Analysis by SDS-PAGE.

    Biological Activity

    The ED50 as determined by the dose-dependant stimulation of Human TF-1 cells is < 2 ng/ml, corresponding to a Specific Activity of 500,000 IU/mg.

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    • Introduction

      Oncostatin M is a member of a cytokine family that includes leukemia-inhibitory factor, granulocyte colony-stimulating factor, and interleukin 6. This gene encodes a growth regulator which inhibits the proliferation of a number of tumor cell lines. It regulates cytokine production, including IL-6, G-CSF and GM-CSF from endothelial cells.

    • Synonyms

      OSM, MGC20461, Oncostatin M.

    • Physical Appearance

      Sterile Filtered White lyophilized (freeze-dried) powder.

    • Stability

      Lyophilized Oncostatin-M (209 a.a.) although stable at room temperature for 3 weeks, should be stored desiccated below -18°C. Upon reconstitution Oncostatin-M (209 a.a.) should be stored at 4°C between 2-7 days and for future use below -18°C.For long term storage it is recommended to add a carrier protein (0.1% HSA or BSA).Please prevent freeze-thaw cycles.

    • Solubility

      It is recommended to reconstitute the lyophilized Oncostatin-M (209 a.a.) in sterile 18MΩ-cm H2O not less than 100µg/ml, which can then be further diluted to other aqueous solutions.

    • Amino Acid Sequence

      AAIGSCSKEYRVLLGQLQKQTDLMQDTSRLLDPYIRIQGLDVPKLREHCRERPG
      AFPSEETLRGLGRRGFLQTLNATLGCVLHRLADLEQRLPKAQDLERSGLNIEDL
      EKLQMARPNILGLRNNIYCMAQLLDNSDTAEPTKAGRGASQPPTPTPASDAFQ
      RKLEGCRFLHGYHRFMHSVGRVFKWGESPNRSRRHSPHQALRKGVRR.

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    Oncostatin M Human 209 Aa
  • View Data Sheet

    Description:

    Leptin Quadruple Antagonist Pegylated Ovine Recombinant

    Product # :

    CYT-1246

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    Description

    Leptin Antagonist Quadruple Mutant Ovine Recombinant is a single non-glycosilated polypeptide chain containing 146 amino acids and additional Ala at N-terminus. The Ovine Leptin antagonist was mutated, resulting in D23L/L39A/D40A/F41A mutant. The Ovine Leptin antagonist is bound to 20 kDa mono-PEG at N-terminus, resulting in 35.6 kDa. The Ovine Leptin Quadruple anatagonist Pegylated runs as a 48 kDa due to enlarged hydrodymanic volume. Leptin Antagonist Quadruple Mutant Ovine Recombinant was purified by proprietary chromatographic techniques.

    Source

    Escherichia coli.

    Formulation

    The Ovine Leptin Quadruple anatagonist was lyophilized from a concentrated (0.65mg/ml) solution with 0.003mM NaHCO3.

    Purity

    Greater than 95.0% as determined by:

    (a) Gel filtration analysis.

    (b) Analysis by SDS-PAGE.

    Biological Activity

    Pegylated Ovine Leptin Quadruple Antagonist inhibits leptin-induced proliferation of BAF/3 cells stably transfected with the long form of human leptin receptor. Pegylated recombinant Ovine leptin antagonist in vitro activity is 6-8 fold lower than the non-pegylated recombinant super Ovine leptin antagonist but is 15 fold higher as compared to pegylated recombinant super active ovine leptin antagonist.

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    • Physical Appearance

      White lyophilized (freeze-dried) powder.

    • Stability

      Lyophilized Leptin Antagonist Quadruple Mutant Ovine Recombinant although stable at room temperature for several weeks, should be stored desiccated below -18°C. Upon reconstitution at > 0.1 mg/ml and up to 2mM and filter sterilization LEP mutant can be stored at 4°C or even room temperature for several weeks making it suitable for long term infusion studies using osmotic pumps. At lower concentration addition of a carrier protein (0.1% HSA or BSA) is suggested. Please prevent freeze-thaw cycles.

    • Solubility

      It is recommended to reconstitute the lyophilized Leptin Antagonist Quadruple Mutant Ovine Recombinant in sterile water or sterile 0.4% NaHCO3adjusted to pH 8-9, not less than 100µg/ml, which can then be further diluted with other aqueous solutions.

    • Background

      Leptin is mainly produced by adipocytes. Leptin’s main part is to regulate long-term energy balance. Leptin is encoded by the LEP gene. Leptin effects mostly on leptin receptors in the cell mambrane of various cells in the human body. The leptin receptor can be found on a various cell types. The leptin receptor is a single-transmembrane-domain type 1 cytokine receptor. leptin levels influence satiety, appetite and triggers behaviours which save energy. High leptin levels are interpreted by the brain that energy reserves are high, whereas low leptin levels means that energy reserves are low, in the process adapting the organism to starvation through a variety of metabolic, neurobiochemical, endocrine and behavioral change.

    • Protein content

      Protein quantization was carried out by UV spectroscopy at 280 nm using the absorbency value of 0.2 as the extinction coefficient for a 0.1% (1mg/ml) solution at pH 8.0. This value is calculated by the PC GENE computer analysis program of protein sequences (IntelliGenetics).

    ProSpec's products are furnished for LABORATORY RESEARCH USE ONLY. The product may not be used as drugs, agricultural or pesticidal products, food additives or household chemicals.

    Leptin Antagonist Peg Ovine
  • View Data Sheet

    Description:

    Hepatocyte Growth Factor Human Recombinant, HEK

    Scatter Factor (SF), Hepatopoietin (HPTA), HGF, HGFB, F-TCF.

    Product # :

    CYT-090

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    Description

    HGF Human Recombinant produced in HEK cells is a glycosylated disulfide-linked heterodimer, containing 697 a.a. (Gln-32 to Ser-728) having a total molecular weight of 80kDa. The HGF is purified by proprietary chromatographic techniques.

    Source

    HEK.

    Formulation

    The HGF was lyophilized from a solution (1mg/ml) containing 10mM Sodium phosphate, 150mM NaCl, 0.01% Tween 80 and 100mM L-Arginine, pH 6.5.

    Purity

    Greater than 90.0% as determined by SDS-PAGE.

    Biological Activity

    The activity was measured in a cell proliferation assay using 4MBr-5 rhesus monkey epithelial cells (ATCC CCL-208). The EC50 for this effect is typically 20-40ng/ml.

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    • Introduction

      Hepatocyte Growth Factor (HGF) is a multifunctional growth factor which regulates both cell growth and cell motility. It exerts a strong mitogenic effect on hepatocytes and primary epithelial cells. HGF synergizes with Interleukin-3 and GM-CSF to stimulate colony formation of hematopoietic progenitor cells in vitro and may, therefore, also modulate hematopoiesis.

    • Synonyms

      Scatter Factor (SF), Hepatopoietin (HPTA), HGF, HGFB, F-TCF.

    • Physical Appearance

      Sterile Filtered White lyophilized (freeze-dried) powder.

    • Stability

      Lyophilized HGF although stable at room temperature for 3 weeks, should be stored desiccated below -18°C. Upon reconstitution HGF should be stored at 4°C between 2-7 days and for future use below -18°C.For long term storage it is recommended to add a carrier protein (0.1% HSA or BSA).Please prevent freeze-thaw cycles.

    • Solubility

      It is recommended to reconstitute the lyophilized Hepatocyte Growth Factor in sterile 18MΩ-cm H2O not less than 100µg/ml, which can then be further diluted to other aqueous solutions.

    • Amino Acid Sequence

      32-QRKRRNTIHE FKKSAKTTLI KIDPALKIKT KKVNTADQCA NRCTRNKGLP FTCKAFVFDK ARKQCLWFPF NSMSSGVKKE FGHEFDLYEN KDYIRNCIIG KGRSYKGTVS ITKSGIKCQP WSSMIPHEHS FLPSSYRGKD LQENYCRNPR GEEGGPWCFT SNPEVRYEVC DIPQCSEVEC MTCNGESYRG LMDHTESGKI CQRWDHQTPH RHKFLPERYP DKGFDDNYCR NPDGQPRPWC YTLDPHTRWE YCAIKTCADN TMNDTDVPLE TTECIQGQGE GYRGTVNTIW NGIPCQRWDS QYPHEHDMTP ENFKCKDLRE NYCRNPDGSE SPWCFTTDPN IRVGYCSQIP NCDMSHGQDC YRGNGKNYMG NLSQTRSGLT CSMWDKNMED LHRHIFWEPD ASKLNENYCR NPDDDAHGPW CYTGNPLIPW DYCPISRCEG DTTPTIVNLD HPVISCAKTK QLRVVNGIPT RTNIGWMVSL RYRNKHICGG SLIKESWVLT ARQCFPSRDL KDYEAWLGIH DVHGRGDEKC KQVLNVSQLV YGPEGSDLVL MKLARPAVLD DFVSTIDLPN YGCTIPEKTS CSVYGWGYTG LINYDGLLRV AHLYIMGNEK CSQHHRGKVT LNESEICAGA EKIGSGPCEG DYGGPLVCEQ HKMRMVLGVI VPGRGCAIPN RPGIFVRVAY YAKWIHKIIL TYKVPQS-728

    • Background

      What is the molecular weight/Mw of HEPATOCYTE GROWTH FACTOR HUMAN,HEK Protein?
      HEPATOCYTE GROWTH FACTOR HUMAN,HEK Protein has a total Mw of 80kDa.

      What is the source or expression system of HEPATOCYTE GROWTH FACTOR HUMAN,HEK Protein?
      HEK.
      What is the Purity of HEPATOCYTE GROWTH FACTOR HUMAN,HEK Protein?
      HEPATOCYTE GROWTH FACTOR HUMAN,HEK Protein is >90% pure as determined by SDS-PAGE.

      What is the Biological Activity of HEPATOCYTE GROWTH FACTOR HUMAN,HEK Protein?
      The activity was measured in a cell proliferation assay using 4MBr-5 rhesus monkey epithelial cells (ATCC CCL-208). The EC50 for this effect is typically 20-40ng/ml.
      What is the amino acid sequence of HEPATOCYTE GROWTH FACTOR HUMAN,HEK Protein?
      32-QRKRRNTIHE FKKSAKTTLI KIDPALKIKT KKVNTADQCA NRCTRNKGLP FTCKAFVFDK ARKQCLWFPF NSMSSGVKKE FGHEFDLYEN KDYIRNCIIG KGRSYKGTVS ITKSGIKCQP WSSMIPHEHS FLPSSYRGKD LQENYCRNPR GEEGGPWCFT SNPEVRYEVC DIPQCSEVEC MTCNGESYRG LMDHTESGKI CQRWDHQTPH RHKFLPERYP DKGFDDNYCR NPDGQPRPWC YTLDPHTRWE YCAIKTCADN TMNDTDVPLE TTECIQGQGE GYRGTVNTIW NGIPCQRWDS QYPHEHDMTP ENFKCKDLRE NYCRNPDGSE SPWCFTTDPN IRVGYCSQIP NCDMSHGQDC YRGNGKNYMG NLSQTRSGLT CSMWDKNMED LHRHIFWEPD ASKLNENYCR NPDDDAHGPW CYTGNPLIPW DYCPISRCEG DTTPTIVNLD HPVISCAKTK QLRVVNGIPT RTNIGWMVSL RYRNKHICGG SLIKESWVLT ARQCFPSRDL KDYEAWLGIH DVHGRGDEKC KQVLNVSQLV YGPEGSDLVL MKLARPAVLD DFVSTIDLPN YGCTIPEKTS CSVYGWGYTG LINYDGLLRV AHLYIMGNEK CSQHHRGKVT LNESEICAGA EKIGSGPCEG DYGGPLVCEQ HKMRMVLGVI VPGRGCAIPN RPGIFVRVAY YAKWIHKIIL TYKVPQS-728

      What applications can HEPATOCYTE GROWTH FACTOR HUMAN,HEK Protein be used in?
      HEPATOCYTE GROWTH FACTOR HUMAN,HEK Protein can probably be used in western blot, ELISA and Lateral Flow.

      What is the endotoxin level for HEPATOCYTE GROWTH FACTOR HUMAN,HEK Protein?
      The endotoxin level is minimal, HEPATOCYTE GROWTH FACTOR HUMAN,HEK Protein was purified using conventional chromatography techniques.


    ProSpec's products are furnished for LABORATORY RESEARCH USE ONLY. The product may not be used as drugs, agricultural or pesticidal products, food additives or household chemicals.

    Hgf Human Hek
  • View Data Sheet

    Description:

    Galectin-14 Human Recombinant

    Placental protein 13-like, Charcot-Leyden crystal protein 2, CLC2, Galectin-14, Gal-14, LGALS14, PPL13, MGC22235.

    Product # :

    CYT-003

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    Description

    LGALS14 Human Recombinant fused with a 23 amino acid His tag at N-terminus produced in E.Coli is a single, non-glycosylated, polypeptide chain containing 162 amino acids (1-139 a.a.) and having a molecular mass of 18.5kDa. The LGALS14 is purified by proprietary chromatographic techniques.

    Source

    Escherichia Coli.

    Formulation

    The LGALS14 solution (0.5mg/ml) contains 20mM Tris-HCl buffer (pH8.0), 20% glycerol, 0.1M NaCl and 1mM DTT.

    Purity

    Greater than 90.0% as determined by SDS-PAGE.

    More Info

    • Introduction

      Galectin14, aka LGALS14, is a member of the galectin family of carbohydrate binding proteins. Galectin family members contain one or two carbohydrate recognition domains, which can bind beta-galactoside. The LGALS14 gene is predominantly expressed in the placenta. LGALS14 is expressed intracellularly in the placenta and eosinophils and is released by eosinophils following allergen stimulation. LGALS14 may be involved in the development of allergic inflammation.

    • Synonyms

      Placental protein 13-like, Charcot-Leyden crystal protein 2, CLC2, Galectin-14, Gal-14, LGALS14, PPL13, MGC22235.

    • Physical Appearance

      Sterile Filtered colorless solution.

    • Stability

      Store at 4°C if entire vial will be used within 2-4 weeks. Store, frozen at -20°C for longer periods of time. For long term storage it is recommended to add a carrier protein (0.1% HSA or BSA).Avoid multiple freeze-thaw cycles.

    • Amino Acid Sequence

      MGSSHHHHHH SSGLVPRGSH MGSMSSLPVP YTLPVSLPVG SCVIITGTPI LTFVKDPQLE VNFYTGMDED SDIAFQFRLH FGHPAIMNSR VFGIWRYEEK CYYLPFEDGK PFELCIYVRH KEYKVMVNGQ RIYNFAHRFP PASVKMLQVL RDISLTRVLI SD.

    • Background

      What is the molecular weight/Mw of LGALS14 HUMAN Protein?
      LGALS14 HUMAN Protein has a total Mw of 18.5kDa.

      What is the source or expression system of LGALS14 HUMAN Protein?
      Escherichia Coli.

      What is the Purity of LGALS14 HUMAN Protein?
      LGALS14 HUMAN Protein is >90% pure as determined by SDS-PAGE.

      What is the Biological Activity of LGALS14 HUMAN Protein?
      The biological functionality of LGALS14 HUMAN Protein will be determined in the future.

      What is the amino acid sequence of LGALS14 HUMAN Protein?
      MGSSHHHHHH SSGLVPRGSH MGSMSSLPVP YTLPVSLPVG SCVIITGTPI LTFVKDPQLE VNFYTGMDED SDIAFQFRLH FGHPAIMNSR VFGIWRYEEK CYYLPFEDGK PFELCIYVRH KEYKVMVNGQ RIYNFAHRFP PASVKMLQVL RDISLTRVLI SD.
      What applications can LGALS14 HUMAN Protein be used in?
      LGALS14 HUMAN Protein can probably be used in western blot, ELISA and Lateral Flow.

      What is the endotoxin level for LGALS14 HUMAN Protein?
      The endotoxin level is minimal, LGALS14 HUMAN Protein was purified using conventional chromatography techniques.


    ProSpec's products are furnished for LABORATORY RESEARCH USE ONLY. The product may not be used as drugs, agricultural or pesticidal products, food additives or household chemicals.

    Lgals14 Human
  • View Data Sheet

    Description:

    Resistin (64-110) Human Recombinant

    Cysteine-rich secreted protein FIZZ3, Adipose tissue-specific secretory factor, ADSF.

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    CYT-1232

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    Description

    The Resistin Human is created as a recombinant protein with a 4kda N-terminal fusion of His Tag. The Resistin His-Tagged Fusion Protein, produced in E. coli, is a 12kDa protein containing 47 amino acid residues of the Resistin Human, 64-110 amino acids.

    Source

    Escherichia Coli.

    Formulation

    Each mg was lyophilized with 1xPBS, 0.4% SDS and 4mM DTT.

    Purity

    Greater than 80% as determined by SDS-PAGE.

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    • Synonyms

      Cysteine-rich secreted protein FIZZ3, Adipose tissue-specific secretory factor, ADSF.

    • Physical Appearance

      Filtered White lyophilized (freeze-dried) powder.

    • Stability

      Store lyophilized Resistin at -20°C. Aliquot the product after reconstitution to avoid repeated freezing/thawing cycles. Reconstituted protein can be stored at 4°C for a limited period of time; it does not show any change after two weeks at 4°C.

    • Solubility

      It is recommended to add deionized water to prepare a working stock solution of approximately 0.5mg/ml and let the lyophilized pellet dissolve completely. Product is not sterile! Please filter the product by an appropriate sterile filter before using it on cell culture.

    • Background

      Human resistin is an adipokine primarily secreted by adipose tissue, mainly in response to obesity and inflammatory conditions.

      Resistin Function

      Resistin takes part in insulin resistance, which can be the cause of the development of type 2 diabetes. Resistin can also affect glucose metabolism and insulin signalling.

      Regulation

      Levels of resistin are influenced by factors such as inflammation, obesity and certain hormones. It tends to increase in conditions associated with obesity and metabolic syndrome.

      Clinical Relevance

      Elevated levels of resistin have been associated with obesity-related conditions, cardiovascular diseases, and metabolic disorders. Resisting is considered as a potential biomarker for these conditions.

      Resistin Mechanism

      Resistin promotes insulin resistance through different pathways such as the modulation of inflammatory processes and the inhibition of insulin signaling in target tissues like liver and muscle.

      Research

      Ongoing studies are exploring resistin’s role in metabolic regulation, the exact mechanisms of action of resistin and its potential as a therapeutic target for treating metabolic diseases.

      Overall, resistin is a critical factor in metabolic health, mainly in the context of diabetes and obesity.

    ProSpec's products are furnished for LABORATORY RESEARCH USE ONLY. The product may not be used as drugs, agricultural or pesticidal products, food additives or household chemicals.

    Resistin Human Protein
  • View Data Sheet

    Name :

    F9 Human

    Description:

    Coagulation Factor IX Human

    Coagulation factor IX, EC 3.4.21.22, Christmas factor, Plasma thromboplastin component, PTC, F9, FIX, HEMB, MGC129641, MGC129642, GLA domain, Factor IX.

    Product # :

    PRO-353

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    Description

    Human Factor-IX produced from fresh frozen human plasma is a glycosylated polypeptide chain having a molecular mass of 56 kDa.

    Source

    Human Plasma.

    Formulation

    The Factor-IX was lyophilized from a sterile solution containing 20mM Tris-HCl pH-7.4, 0.1M NaCl and 1mM Benzamidine.

    Purity

    Greater than 95.0% as determined by SDS-PAGE.

    Biological Activity

    The activity per mg was tested and found to be 306.5 PEU/mg.

    More Info

    • Introduction

      Human Factor IX also called Christmas-Factor is a glycoprotein, which is synthesized in the liver and belongs to the serine proteases system and is part of the S1 peptidase family.
      Lack of Factor-IX causes Hemophilia-B meaning Christmas Disease. Factor-IX has a N-terminus region which contains 12xGla residues which asist the calcium dpendant binding of Factor-IX to the phospholipid surface. Factor-IX is activated by either factor XIa or the factor VIIa/tissue factor/phospholipid complex. Cleavage yields the intermediate IXa, which is subsequently converted to the fully active form IXab.
      Factor-IX binds initially to exosites on the factor XIa heavy chain, followed by interaction at the active site with subsequent bond cleavage. Coagulation factor IX is activated by interaction with the erythrocyte membrane, causing intrinsic coagulation. Chaperones & lectins act simultaniously to guarantee the proper folding of Factor-IX and the retention of mutant molecules. Human Factor IX, activated by either the Contact or Tissue Factor Pathway, is responsible for the activation of Factor X to Xa.

    • Synonyms

      Coagulation factor IX, EC 3.4.21.22, Christmas factor, Plasma thromboplastin component, PTC, F9, FIX, HEMB, MGC129641, MGC129642, GLA domain, Factor IX.

    • Physical Appearance

      Sterile Filtered White lyophilized (freeze-dried) powder.

    • Stability

      Lyophilized Factor-IX although stable at room temperature for 3 weeks, should be stored desiccated below -18°C. Upon reconstitution Factor-IX should be stored at 4°C between 2-7 days and for future use below -18°C.Please prevent freeze-thaw cycles.

    • Solubility

      It is recommended to reconstitute the lyophilized 100U Factor-IX in sterile 100µl of 18MΩ-cm H2O, which can then be further diluted to other aqueous solutions.

    • Human Virus Test

      Human plasma was tested and found negative for HIV-1, HIV-2, Hepatitis B Surface antigen and HCV. Donors are screened for CJD (Creutzfeldt-Jakob Disease).

    ProSpec's products are furnished for LABORATORY RESEARCH USE ONLY. The product may not be used as drugs, agricultural or pesticidal products, food additives or household chemicals.

    Factor Ix Human
  • View Data Sheet

    Description:

    IGF-Like Family Receptor 1 Human Recombinant

    TMEM149, U2AF1L4, IGF-like family receptor 1, Transmembrane protein 149, U2 small nuclear RNA auxiliary factor 1-like 4, IGFLR1. 

    Product # :

    PRO-1432

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    Description

    IGFLR1 Human Recombinant produced in E. coli is a single polypeptide chain containing 164 amino acids (23-163) and having a molecular mass of 17.5kDa. IGFLR1 is fused to a 23 amino acid His-tag at N-terminus & purified by proprietary chromatographic techniques.

    Source

    E.coli.

    Formulation

    The IGFLR1 solution (0.25mg/ml) contains 20mM Tris-HCl buffer (pH 7.5), 0.2M NaCl, 50% glycerol and 2mM DTT.

    Purity

    Greater than 90% as determined by SDS-PAGE.

    More Info

    • Introduction

      GF-like family receptor 1 (IGFLR1) is encoded by a gene mapping to human chromosome 19. IGFLR1 which is cell membrane receptor for the IGF-like family proteins binds IGFL1 and IGFL3 with a higher affinity and may as well bind IGFL2.

    • Synonyms

      TMEM149, U2AF1L4, IGF-like family receptor 1, Transmembrane protein 149, U2 small nuclear RNA auxiliary factor 1-like 4, IGFLR1.

    • Physical Appearance

      Sterile Filtered colorless solution.

    • Stability

      Store at 4°C if entire vial will be used within 2-4 weeks. Store, frozen at -20°C for longer periods of time. For long term storage it is recommended to add a carrier protein (0.1% HSA or BSA).Avoid multiple freeze-thaw cycles.

    • Amino Acid Sequence

      MGSSHHHHHH SSGLVPRGSH MGSSQYCGRL EYWNPDNKCC SSCLQRFGPP PCPDYEFREN CGLNDHGDFV TPPFRKCSSG QCNPDGAELC SPCGGGAVTP TPAAGGGRTP WRCRERPVPA KGHCPLTPGN PGAPSSQERS SPASSIAWRT PEPVPQQAWP NFLP.

    ProSpec's products are furnished for LABORATORY RESEARCH USE ONLY. The product may not be used as drugs, agricultural or pesticidal products, food additives or household chemicals.

    Igflr1 Human
  • View Data Sheet

    Description:

    Eukaryotic Translation Initiation Factor 3F Human Recombinant

    Eukaryotic Translation Initiation Factor 3, Subunit F, EIF3S5 , Eukaryotic Translation Initiation Factor 3, Subunit 5 (Epsilon, 47kD), EC 3.4.19.12, Deubiquitinating Enzyme EIF3f, eIF3f, eIF-3-epsilon, EIF3 P47, Eukaryotic Translation Initiation Factor 3 Subunit 5, eIF3-p47, Eukaryotic Translation Initiation Factor 3, Subunit 5 Epsilon, 47kDa.

    Product # :

    PRO-1722

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    Description

    EIF3F Human Recombinant produced in E.Coli is a single, non-glycosylated polypeptide chain containing 380 amino acids (1-357 a.a) and having a molecular mass of 40kDa. EIF3F is fused to a 23 amino acid His-tag at N-terminus & purified by proprietary chromatographic techniques.

    Source

    Escherichia Coli.

    Formulation

    EIF3F protein solution (1mg/ml) containing 20mM Tris-HCl buffer (pH8.0), 10% glycerol, and 0.4M urea.

    Purity

    Greater than 90.0% as determined by SDS-PAGE.

    More Info

    • Introduction

      Eukaryotic Translation Initiation Factor 3F, also known as EIF3F belongs to the eIF-3 subunit F family. EIF3F is a component of the eukaryotic translation initiation factor 3 (eIF-3) complex, which isessential for several steps in the initiation of protein synthesis. The eIF-3 complex associates with the 40S ribosomeand facilitates the recruitment of eIF-1, eIF-1A, eIF 2: GTP: methionyl-tRNAi and eIF-5 to form the 43S preinitiationcomplex (43S PIC). In addition, the eIF-3 complex stimulates mRNA recruitment to the 43S PIC and scanning of the mRNA forAUG recognition. The eIF-3 complex is also necessary for disassembly and recycling of post termination ribosomalcomplexes and subsequently prevents premature union of the 40S and 60S ribosomal subunits prior to initiation. Among the diseases associated with EIF3F are intrahepatic cholangiocarcinoma, and cholangiocarcinoma.

    • Synonyms

      Eukaryotic Translation Initiation Factor 3, Subunit F, EIF3S5 , Eukaryotic Translation Initiation Factor 3, Subunit 5 (Epsilon, 47kD), EC 3.4.19.12, Deubiquitinating Enzyme EIF3f, eIF3f, eIF-3-epsilon, EIF3 P47, Eukaryotic Translation Initiation Factor 3 Subunit 5, eIF3-p47, Eukaryotic Translation Initiation Factor 3, Subunit 5 Epsilon, 47kDa.

    • Physical Appearance

      Sterile Filtered colorless solution.

    • Stability

      Store at 4°C if entire vial will be used within 2-4 weeks. Store, frozen at -20°C for longer periods of time. For long term storage it is recommended to add a carrier protein (0.1% HSA or BSA).Avoid multiple freeze-thaw cycles.

    • Amino Acid Sequence

      MGSSHHHHHH SSGLVPRGSH MGSMATPAVP VSAPPATPTP VPAAAPASVP APTPAPAAAP VPAAAPASSS DPAAAAAATA APGQTPASAQ APAQTPAPAL PGPALPGPFP GGRVVRLHPV ILASIVDSYE RRNEGAARVI GTLLGTVDKH SVEVTNCFSV PHNESEDEVA VDMEFAKNMY ELHKKVSPNE LILGWYATGH DITEHSVLIH EYYSREAPNP IHLTVDTSLQ NGRMSIKAYV STLMGVPGRT MGVMFTPLTV KYAYYDTERI GVDLIMKTCF SPNRVIGLSS DLQQVGGASA RIQDALSTVL QYAEDVLSGK VSADNTVGRF LMSLVNQVPK IVPDDFETML NSNINDLLMV TYLANLTQSQ IALNEKLVNL.

    ProSpec's products are furnished for LABORATORY RESEARCH USE ONLY. The product may not be used as drugs, agricultural or pesticidal products, food additives or household chemicals.

    Eif3F Human
  • View Data Sheet

    Description:

    Oxidized Low Density Lipoprotein Receptor 1 Human Recombinant

    Oxidized low density lipoprotein (lectin-like) receptor 1, CLEC8A, hLOX1, SCARE1, Lectin-type oxidized LDL receptor 1, Lectin-like oxidized LDL receptor 1, C-type lectin domain family 8 member A, LOXIN, SLOX1, ox LDL receptor 1, Oxidized low-density lipoprotein receptor 1 soluble form, scavenger receptor class E member 1.

    Product # :

    PRO-923

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    Description

    OLR1 Human Recombinant produced in E.coli is a single, non-glycosylated polypeptide chain containing 216 amino acids (58-273) and having a molecular mass of 24.7 kDa.The OLR1 is purified by proprietary chromatographic techniques.

    Source

    E.coli.

    Formulation

    The OLR1 solution (1mg/ml) contains 20mM Tris-HCl buffer (pH 8.0), 0.4M Urea and 5% glycerol.

    Purity

    Greater than 90% as determined by SDS-PAGE.

    More Info

    • Introduction

      OLR1 is a type II membrane protein which belongs to the C-type lectin family and performs as a cell-surface receptor for Ox-LDL. Ox-LDL has a part in early ather-osclerosis, which includes the transformation of monocyte-derived macro-phages to foam cells in atherosclerotic lesions. In addition, OLR1 protein triggers the activation of the NF?B signal transduction pathway.

    • Synonyms

      Oxidized low density lipoprotein (lectin-like) receptor 1, CLEC8A, hLOX1, SCARE1, Lectin-type oxidized LDL receptor 1, Lectin-like oxidized LDL receptor 1, C-type lectin domain family 8 member A, LOXIN, SLOX1, ox LDL receptor 1, Oxidized low-density lipoprotein receptor 1 soluble form, scavenger receptor class E member 1.

    • Physical Appearance

      Sterile Filtered colorless solution.

    • Stability

      Store at 4°C if entire vial will be used within 2-4 weeks. Store, frozen at -20°C for longer periods of time. For long term storage it is recommended to add a carrier protein (0.1% HSA or BSA).Avoid multiple freeze-thaw cycles.

    • Amino Acid Sequence

      MQLSQVSDLL TQEQANLTHQ KKKLEGQISA RQQAEEASQE SENELKEMIE TLARKLNEKS KEQMELHHQN LNLQETLKRV ANCSAPCPQD WIWHGENCYL FSSGSFNWEK SQEKCLSLDA KLLKINSTAD LDFIQQAISY SSFPFWMGLS RRNPSYPWLW EDGSPLMPHL FRVRGAVSQT YPSGTCAYIQ RGAVYAENCI LAAFSICQKK ANLRAQ

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    Olr1 Human
  • View Data Sheet

    Description:

    Flt3 Ligand Porcine Recombinant

    Fms-related tyrosine kinase 3 ligand, FLK2, STK1, CD135, Stem Cell Tyrosine Kinase 1, FLT3LG, Flt3.

    Product # :

    CYT-1041

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    Description

    Flt3-Ligand Porcine Recombinant produced in E.Coli is a non-glycosylated, polypeptide chain containing 155 amino acids and having a molecular mass of approximately 17.3kDa. Flt3-Ligand is purified by proprietary chromatographic techniques.

    Source

    Escherichia Coli.

    Formulation

    The protein is lyophilized with 10mM Sodium Phosphate pH-7.5.

    Purity

    Greater than 95.0% as determined by SDS-PAGE.

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    • Introduction

      FLT3 ligand is a receptor for the fl cytokine has a tyrosine-protein kinase activity & a growth factor that regulates proliferation of early hematopoietic cells. Flt3-Ligand synergizes with other CSFs and interleukins to induce growth and differentiation.

    • Synonyms

      Fms-related tyrosine kinase 3 ligand, FLK2, STK1, CD135, Stem Cell Tyrosine Kinase 1, FLT3LG, Flt3.

    • Physical Appearance

      Sterile Filtered White lyophilized (freeze-dried) powder.

    • Stability

      Lyophilized Porcine Flt3-Ligand although stable at room temperature for 3 weeks, should be stored desiccated below -18°C. Upon reconstitution Flt3-Ligand should be stored at 4°C between 2-7 days and for future use below -18°C. For long term storage it is recommended to add a carrier protein (0.1% HSA or BSA). Please prevent freeze-thaw cycles.

    • Solubility

      It is recommended to reconstitute the lyophilized Flt3-L in sterile 18MΩ-cm H2O not less than 100µg/ml, which can then be further diluted to other aqueous solutions.

    • Amino Acid Sequence

      MSPDCSFPHS PISSTFANTI RQLSDYLLQD YPVTVASNLQ DDELCGAFWR LVLAQRWMGQ LKTVAGSQMQ KLLEAVNTEI VFVTSCALQP LPSCLRFVQA NISHLLQDTS QQLVALKPWI TRRNFSRCLE LQCQPDPSTL LPPRSPGALE ATSLP.

    • Background

      What is the molecular weight/Mw of FLT3 LIGAND PORCINE Protein?
      FLT3 LIGAND PORCINE Protein has a total Mw of 17.3kDa.

      What is the source or expression system of FLT3 LIGAND PORCINE Protein?
      Escherichia Coli.

      What is the Purity of FLT3 LIGAND PORCINE Protein?
      FLT3 LIGAND PORCINE Protein is >95% pure as determined by SDS-PAGE.

      What is the Biological Activity of FLT3 LIGAND PORCINE Protein?
      The biological functionality of FLT3 LIGAND PORCINE Protein will be determined in the future.

      What is the amino acid sequence of FLT3 LIGAND PORCINE Protein?
      MSPDCSFPHS PISSTFANTI RQLSDYLLQD YPVTVASNLQ DDELCGAFWR LVLAQRWMGQ LKTVAGSQMQ KLLEAVNTEI VFVTSCALQP LPSCLRFVQA NISHLLQDTS QQLVALKPWI TRRNFSRCLE LQCQPDPSTL LPPRSPGALE ATSLP.

      What applications can FLT3 LIGAND PORCINE Protein be used in?
      FLT3 LIGAND PORCINE Protein can probably be used in western blot, ELISA and Lateral Flow.

      What is the endotoxin level for FLT3 LIGAND PORCINE Protein?
      The endotoxin level is minimal, FLT3 LIGAND PORCINE Protein was purified using conventional chromatography techniques.

    ProSpec's products are furnished for LABORATORY RESEARCH USE ONLY. The product may not be used as drugs, agricultural or pesticidal products, food additives or household chemicals.

    Flt3 Ligand Porcine
  • View Data Sheet

    Description:

    Leptin Bovine Recombinant

    OB Protein, Obesity Protein, OBS, Obesity factor.

    Product # :

    CYT-502

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    Description

    Leptin Bovine Recombinant produced in E.Coli is a single, non-glycosylated, polypeptide chain containing 146 amino acids and having a molecular mass of 16 kDa.The Leptin is purified by proprietary chromatographic techniques.

    Source

    Escherichia Coli.

    Formulation

    The protein was lyophilized from a concentrated (1mg/ml) solution with 0.02% NaHCO3.

    Purity

    Greater than 98.0% as determined by:
    (a) Gel filtration analysis.
    (b) Analysis by SDS-PAGE.

    Biological Activity

    Biological active as evidenced by inducing proliferation of BAF/3 cells stably transfected with the long form of human leptin receptor.

    More Info

    • Introduction

      A 16-kDa peptide hormone secreted from white adipocytes and implicated in the regulation of food intake and energy balance. Leptin provides the key afferent signal from fat cells in the feedback system that controls body fat stores.

    • Synonyms

      OB Protein, Obesity Protein, OBS, Obesity factor.

    • Physical Appearance

      Sterile Filtered White lyophilized (freeze-dried) powder.

    • Stability

      Lyophilized Leptin although stable at room temperature for 3 weeks, should be stored desiccated below -18°C. Upon reconstitution Leptin should be stored at 4°C between 2-7 days and for future use below -18°C.For long term storage it is recommended to add a carrier protein (0.1% HSA or BSA).Please prevent freeze-thaw cycles.

    • Solubility

      It is recommended to reconstitute the lyophilized Leptin in sterile 0.4% NaHCO3 not less than 100µg/ml, which can then be further diluted to other aqueous solutions.

    • Amino Acid Sequence

      The sequence of the first five N-terminal amino acids was determined and was found to be Ala-Val-Pro-Ile-Arg.

    • Protein content

      Protein quantitation was carried out by UV spectroscopy at 280 nm using the absorbency value of 0.2 as the extinction coefficient for a 0.1% (1mg/ml) solution. This value is calculated by the PC GENE computer analysis program of protein sequences (IntelliGenetics).

    ProSpec's products are furnished for LABORATORY RESEARCH USE ONLY. The product may not be used as drugs, agricultural or pesticidal products, food additives or household chemicals.

    Leptin Bovine
  • View Data Sheet

    Description:

    Leptin Human Recombinant, His Tag

    OB Protein, Obesity Protein, OBS, Obesity factor.

    Product # :

    CYT-287

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    Description

    Leptin Human Recombinant produced in E.Coli is a single, non-glycosylated, polypeptide chain containing amino acids 48-167 and having a total molecular mass of 19 kDa including the 4 kDa His tag.The Leptin is purified by proprietary chromatographic techniques.

    Source

    Escherichia Coli.

    Formulation

    The protein was lyophilized from a concentrated (1mg/ml) solution with 1X PBS, 0.1% SDS and 1mM DTT.

    Purity

    Greater than 90.0% as determined by SDS-PAGE.

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    • Introduction

      Leptin is a protein hormone with important effects in regulating body weight, metabolism and reproductive function. The protein is approximately~16 kDa in mass and encoded by the obese (ob)gene. leptin is expressed predominantly by adipocytes, which fits with the idea that body weight is sensed as the total mass of fat in the body. Smaller amounts of leptin are also secreted by cellsin the epithelium of the stomach and in the placenta. Leptin receptors are highly expressed in areas of the hypothalamus known to be important in regulating body weight, as well as in T lymphocytes and vascular endothelial cells.

    • Synonyms

      OB Protein, Obesity Protein, OBS, Obesity factor.

    • Physical Appearance

      Sterile Filtered White lyophilized (freeze-dried) powder.

    • Stability

      Lyophilized Leptin although stable at room temperature, should be stored desiccated below 0°C. Reconstituted Leptin is best stored refrigerated at 4°C.Please avoid freeze-thaw cycles.

    • Solubility

      The lyophilized Leptin is very soluble in water and most aqueous buffers below and above the isoelectric point.

    ProSpec's products are furnished for LABORATORY RESEARCH USE ONLY. The product may not be used as drugs, agricultural or pesticidal products, food additives or household chemicals.

    Leptin Human His