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Search results

1000 results found for “Other Growth Factors”

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  • View Data Sheet

    Name :

    LGALS4 Human

    Description:

    Galectin-4 Human Recombinant

    Galectin-4, Gal-4, Lactose-binding lectin 4, L-36 lactose-binding protein, L36LBP, Antigen NY-CO-27, LGALS4, lectin galactoside-binding soluble 4, GAL4.

    Product # :

    CYT-686

    Price :

    Quantity :

    Shipping Method :

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    Shipped with Ice Packs

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    • source
    • formulation
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    • More Info
    • sds-page

    Description

    Galectin-4 produced in E.Coli is a single, non-glycosylated polypeptide chain containing 343 amino acids (1-323 a.a.) and having a molecular mass of 38.1kDa.Galectin-4 is fused to 20 amino acid His-Tag at N-terminus and purified by proprietary chromatographic techniques.

    Source

    Escherichia Coli.

    Formulation

    The LGALS4 protein solution contains 20mM Tris-HCl, pH-8, 1mM DTT and 10% glycerol.

    Purity

    Greater than 95.0% as determined by SDS-PAGE.

    sds-page

    LGALS4 Human-SDS-PAGE - Product image 1

    More Info

    • Introduction

      Galectin-4 is a member of the subfamily of galectins composed of two carbohydrate recognition domains having similar peptide chains. The galectins are a family of beta-galactoside-binding proteins having a role in modulating cell-cell and cell-matrix interactions, which inhibits chronic inflammations, GVHD, and allergic responses. LGALS4 expression is limited to small intestine, colon, and rectum, and it is underexpressed in colorectal cancer. LGALS4 binds as an endogenous ligand to glycosphingolipids having 3-O-sulfated Gal residues and bind as well to cholesterol-3-sulfate. LGALS4 takes part in cell adhesion. LGALS4 plays a role in crosslinking the lateral cell membranes of the surface-lining epithelial cells, thus supporting epithelial integrity against mechanical stress exerted by the bowel lume. LGALS4 is in charge of intestinal inflammation via selective regulation of peripheral and mucosal T-cell cell cycle, in addition to cell death by apoptosis of T-cells by a pathway independent of the activation of caspases. LGALS4 blockade decreases TNF-alpha inhibitor induced T-cell death. LGALS4 decreases pro-inflammatory cytokine secretion including IL-6 & IL-17.

    • Synonyms

      Galectin-4, Gal-4, Lactose-binding lectin 4, L-36 lactose-binding protein, L36LBP, Antigen NY-CO-27, LGALS4, lectin galactoside-binding soluble 4, GAL4.

    • 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 MAYVPAPGYQ PTYNPTLPYY QPIPGGLNVG MSVYIQGVAS EHMKRFFVNF VVGQDPGSDV AFHFNPRFDG WDKVVFNTLQ GGKWGSEERK RSMPFKKGAA FELVFIVLAE HYKVVVNGNP FYEYGHRLPL QMVTHLQVDG DLQLQSINFI GGQPLRPQGP PMMPPYPGPG HCHQQLNSLP TMEGPPTFNP PVPYFGRLQG GLTARRTIII KGYVPPTGKS FAINFKVGSS GDIALHINPR MGNGTVVRNS LLNGSWGSEE KKITHNPFGP GQFFDLSIRC GLDRFKVYAN GQHLFDFAHR LSAFQRVDTL EIQGDVTLSY VQI.

    • Background

      What is the molecular weight/Mw of LGALS4 HUMAN Protein?
      LGALS4 HUMAN Protein has a total Mw of 38.1kDa.

      What is the source or expression system of LGALS4 HUMAN Protein?
      Escherichia Coli.

      What is the Purity of LGALS4 HUMAN Protein?
      LGALS4 HUMAN Protein is >95% pure as determined by SDS-PAGE.

      What is the Biological Activity of LGALS4 HUMAN Protein?
      The biological functionality of LGALS4 HUMAN Protein will be determined in the future.

      What is the amino acid sequence of LGALS4 HUMAN Protein?
      MGSSHHHHHH SSGLVPRGSH MAYVPAPGYQ PTYNPTLPYY QPIPGGLNVG MSVYIQGVAS EHMKRFFVNF VVGQDPGSDV AFHFNPRFDG WDKVVFNTLQ GGKWGSEERK RSMPFKKGAA FELVFIVLAE HYKVVVNGNP FYEYGHRLPL QMVTHLQVDG DLQLQSINFI GGQPLRPQGP PMMPPYPGPG HCHQQLNSLP TMEGPPTFNP PVPYFGRLQG GLTARRTIII KGYVPPTGKS FAINFKVGSS GDIALHINPR MGNGTVVRNS LLNGSWGSEE KKITHNPFGP GQFFDLSIRC GLDRFKVYAN GQHLFDFAHR LSAFQRVDTL EIQGDVTLSY VQI.

      What applications can LGALS4 HUMAN Protein be used in?
      LGALS4 HUMAN Protein can probably be used in western blot, ELISA and Lateral Flow.

      What is the endotoxin level for LGALS4 HUMAN Protein?
      The endotoxin level is minimal, LGALS4 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.

    Lgals4 Human
  • View Data Sheet

    Name :

    Prolactin Human, PEG

    Description:

    Prolactin Pegylated Human Recombinant

    Mammotropin, Luteotropic hormone, Luteotropin, PRL.

    Product # :

    CYT-1063

    Price :

    Quantity :

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    Shipped at Room temp

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    • More Info

    Description

    Prolactin Human Recombinant Pegylated produced in E.Coli is a single, non-glycosylated polypeptide chain containing 199 amino acids + an additional Ala at n-terminal. Pegylated Prolactin is mono-pegylated having a molecular mass of ~ 39 kDa, however under non-denaturing conditions it behaves as 220 kDa protein due to its increased hydrodynamic volume. The Pegylated Prolactin protein 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) Analysis by Gel filtration.
    (b) Analysis by SDS-PAGE.

    Biological Activity

    Pegylated Human Prolactin was tested for its biological functionality in-vitro by inducing proliferation of Nb2 cells or Baf/3 cells that were stably transfected with Human Prolactin receptors, though its activity is lower than human Prolactin. However, it is anticipated that its biological activity in vivo will be higher than human Prolactin due to prolonged persistence in circulation.

    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. Prolactin is secreted when eating, nursing, mating, estrogen treatment and during ovulation. Prolactin's primary role is to promote and maintain lactation but also plays 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 Prolactin 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 0.4% NaHCO3 pH-8-9, not less than 100µg/ml, which can then be further diluted to other aqueous 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.

    Prolactin Pegylated
  • View Data Sheet

    Name :

    Leptin qA Rat, PEG

    Description:

    Leptin Quadruple Antagonist, Pegylated Rat Recombinant

    OB Protein, Obesity Protein, OBS, Obesity factor.

    Product # :

    CYT-1241

    Price :

    Quantity :

    Shipping Method :

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    Shipped at Room temp

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    • description
    • source
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    • More Info

    Description

    Leptin Pegylated Quadruple Antagonist Rat Recombinant is a single non-glycosilated polypeptide chain containing 146 amino and additional Ala at N-terminus acids. The Rat Leptin antagonist is bound to 20 kDa mono-PEG at N-terminus, resulting in 35.6 kDa. The Rat Leptin Pegylated Quadruple Antagonist was mutated, resulting in D23L/L39A/D40A/F41A that was purified by proprietary chromatographic techniques.

    Source

    Escherichia coli.

    Formulation

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

    Purity

    Greater than 98.0% as determined by:

    (a) Gel filtration analysis.

    (b) Analysis by SDS-PAGE.

    Biological Activity

    Rat Leptin Pegylated Quadruple Antagonist inhibits leptin-induced proliferation of BAF/3 cells stably transfected with the long form of human leptin receptor. Its in vitro.

    More Info

    • Synonyms

      OB Protein, Obesity Protein, OBS, Obesity factor.

    • Physical Appearance

      White lyophilized (freeze-dried) powder.

    • Stability

      Lyophilized Rat Leptin Pegylated Quadruple Antagonist although stable at room temperature for several weeks, should be stored desiccated below -18°C. Upon reconstitution at > 0.1 and up to 2mM of rat pegylated leptin antagonist and filter sterilization rat pegylated leptin antagonist 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 Rat Leptin Pegylated Quadruple Antagonist 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 a hormone which mainly produced by adipocytes. Leptin’s main part is to regulate long-term energy balance. Leptin is encoded by the LEP gene. Leptin receptors are expressed by various brain and peripheral cell types. leptin levels influence satiety, appetite and triggers behaviors which lead to energy savings. 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.

    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 Rat Peg Qa
  • View Data Sheet

    Name :

    IL 3 Rhesus Macaque

    Description:

    Interleukin-3 Rhesus Macaque Recombinant

    MCGF (Mast cell growth factor), Multi-CSF, HCGF, P-cell stimulation factor, IL-3, MGC79398, MGC79399

    Product # :

    CYT-156

    Price :

    Quantity :

    Shipping Method :

    Room Temp Icon

    Shipped at Room temp

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    More Info

    • description
    • source
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    • More Info

    Description

    IL 3 Rhesus Macaque Recombinant produced in E.Coli is a single, non-glycosylated, polypeptide chain containing 124 amino acids and having a molecular mass of 14.0kDa.The IL 3 Rhesus Macaque is purified by proprietary chromatographic techniques.

    Source

    Escherichia Coli.

    Formulation

    Lyophilized from a 0.2µm filtered concentrated solution in PBS, pH 7.4.

    Purity

    Greater than 97.0% as determined by SDS-PAGE.

    Biological Activity

    The ED50 as determined by the dose-dependant stimulation of the proliferation of human
    TF-1 cells is less than 0.1ng/ml, corresponding to a Specific Activity of 10,000,000IU/mg.

    More Info

    • Introduction

      IL3 is a potent growth promoting cytokine. This cytokine is capable of supporting the proliferation of a broad range of hematopoietic cell types. It is involved in a variety of cell activities such as cell growth, differentiation and apoptosis. This cytokine has been shown to also possess neurotrophic activity, and it may be associated with neurologic disorders.

    • Synonyms

      MCGF (Mast cell growth factor), Multi-CSF, HCGF, P-cell stimulation factor, IL-3, MGC79398, MGC79399

    • Physical Appearance

      Sterile Filtered White lyophilized (freeze-dried) powder.

    • Stability

      Lyophilized IL-3 although stable at room temperature for 3 weeks, should be stored desiccated below -18°C. Upon reconstitution IL-3 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 IL-3 in sterile 18M-cm H2O not less than 100µg/ml, which can then be further diluted to other aqueous solutions.

    • Amino Acid Sequence

      APMTQTTSLK TSWAKCSNMI DEIITHLNQP PLPSPDFNNL NEEDQTILVE KNLRRSNLEA FSKAVKSLQN ASAIESILKN LPPCLPMATA APTRPPIRIT NGDRNDFRRK LKFYLKTLEN EQAQ

    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.

    Il 3 Rhesus Macaque
  • View Data Sheet

    Name :

    Leptin tA Mouse

    Description:

    Leptin Antagonist Triple Mutant Mouse Recombinant

    Product # :

    CYT-354

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    Description

    Leptin Antagonist Triple Mutant Mouse Recombinant is a single non-glycosilated polypeptide chain containing 146 amino and additional Ala at N-terminus acids and having a molecular mass of ~ 16 kDa, LEP was mutated, resulting in L39A/D40A/F41A mutant. Leptin Antagonist Triple Mutant Mouse Recombinant was purified by proprietary chromatographic techniques.

    Source

    Escherichia coli.

    Formulation

    The protein was lyophilized from a concentrated (0.65mg/ml) solution with 0.003mM NaHCO3.

    Purity

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

    Biological Activity

    ProSpec’s Leptin Antagonist Triple Mutant Mouse Recombinant is capable of inhibiting Leptin-induced proliferation of BAF/3 cells stably transfected with the long form of human Leptin receptor. It also inhibits various Leptin effects in several in vitro bioassays.

    More Info

    • Physical Appearance

      White lyophilized (freeze-dried) powder.

    • Stability

      Lyophilized Leptin Antagonist Triple Mutant Mouse Recombinant although stable at room temperature for several weeks, should be stored desiccated below -18°C. Upon reconstitution at > 0.1 Leptin mutant mg/ml and up to 2 mM 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 Triple Mutant Mouse Recombinant in sterile water or sterile 0.4% NaHCO3 adjusted to pH 8-9, not less than 100µg/ml, which can then be further diluted with 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-Gln.

    • Protein content

      Protein quantization was carried out by UV spectroscopy at 280 nm using the absorbency value of 0.201 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 Ta Mouse
  • View Data Sheet

    Name :

    Placental Lactogen Human

    Description:

    Placental Lactogen Human Recombinant

    Chorionic Somatomammotropin Hormone 1, CSH1, Choriomammotropin, Lactogen, CSH2, PL, CSA, CSMT, FLJ75407.

    Product # :

    CYT-656

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    Description

    Placental Lactogen Human Recombinant, is a single polypeptide chain containing 199 amino acids and an additional Ala at the N-terminus having a molecular mass of approximately 22.4 kDa. Placental Lactogen Recombinant 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) Analysis by Gel Filtration.
    (b) Analysis by SDS-PAGE.

    Biological Activity

    Placental Lactogen Human is biologically active as evidenced by inducing proliferation of Nb2 cells.

    More Info

    • Introduction

      Placental Lactogen is a polypeptide hormone that is produced by the Syncytiotrophoblasts of the Placenta, also known as chorionic somatomammotropin. It has both GH and Prolactin activities on growth, lactation, and luteal steroid production. In women, placental lactogen secretion begins soon after implantation and increases to 1 g or more a day in late pregnancy. Placental lactogen is also an ins. antagonist.
      Placental Lactogen Bovine is also capable of activating human and other heterologous GH receptors but not ruminat GH receptors.

    • Synonyms

      Chorionic Somatomammotropin Hormone 1, CSH1, Choriomammotropin, Lactogen, CSH2, PL, CSA, CSMT, FLJ75407.

    • Physical Appearance

      Sterile Filtered White lyophilized (freeze-dried) powder.

    • Stability

      Lyophilized Placental Lactogen Human Recombinant although stable at room temperature for 3 weeks, should be stored desiccated below -18°C. Upon reconstitution Placental Lactogen 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 Placental Lactogen in sterile water or 0.4% NaHCO3 adjusted to pH 8-9, not less than 100µg/ml, which can then be further diluted to other aqueous solutions, preferably in presence of carrier protein.

    • Amino Acid Sequence

      The sequence of the first 6 N-terminal amino acids was determined and was found to be Ala-Val-Gln-Thr-Val-Pro.

    • Protein content

      UV spectroscopy at 280 nm using the absorbency value of 0.73 as the extinction coefficient for a 0.1% (1mg/ml) solution. This value is calculated by the 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.

    Placental Lactogen Human
  • View Data Sheet

    Name :

    BATF Human

    Description:

    Basic Leucine Zipper Transcription Factor Human Recombinant

    Basic leucine zipper transcriptional factor ATF-like, B-cell-activating transcription factor, B-ATF, SF-HT-activated gene 2 protein, SFA-2, BATF, SFA2, BATF1.

    Product # :

    PRO-119

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    Description

    BATF Human Recombinant fused with a 20 amino acid His tag at N-terminus produced in E.Coli is a single, non-glycosylated, polypeptide chain containing 145 amino acids (1-125 a.a.) and having a molecular mass of 16.2kDa. The BATF is purified by proprietary chromatographic techniques.

    Source

    Escherichia Coli.

    Formulation

    The BATF solution (1 mg/ml) contains 20mM Tris-HCl buffer (pH8.0), 0.2M NaCl and 40% glycerol.

    Purity

    BATF purity was found to be greater than 90.0% as determined by SDS-PAGE.

    More Info

    • Introduction

      BATF is a nuclear basic leucine zipper protein which is a member of the AP-1/ATF superfamily of transcription factors. BATF is intensely expressed in mature T and B lymphocytes, and is up-regulated after transformation by human T-cell leukemia virus type I. BATF acts as a tissue-specific modulator of the AP-1 transcription complex in human cells. Furthermore, BATF connects with IFP35 which is a leucine zipper protein that translocates to the nucleus following IFN treatment.

    • Synonyms

      Basic leucine zipper transcriptional factor ATF-like, B-cell-activating transcription factor, B-ATF, SF-HT-activated gene 2 protein, SFA-2, BATF, SFA2, BATF1.

    • Physical Appearance

      BATF is supplied as a 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 MPHSSDSSDS SFSRSPPPGK QDSSDDVRRV QRREKNRIAA QKSRQRQTQK ADTLHLESED LEKQNAALRK EIKQLTEELK YFTSVLNSHE PLCSVLAAST PSPPEVVYSA HAFHQPHVSS PRFQP.

    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.

    Batf Human
  • View Data Sheet

    Name :

    OSM Human, 195 a.a

    Description:

    Oncostatin-M Human Recombinant (195 a.a.)

    OSM, MGC20461, Oncostatin M.

    Product # :

    CYT-735

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    Description

    Oncostatin-M Human Recombinant produced in E.Coli is a single, non-glycosylated polypeptide chain containing 195 amino acids and having a molecular mass of 22kDa. The OSM is purified by proprietary chromatographic techniques.

    Source

    Escherichia Coli.

    Formulation

    Lyophilized from a concentrated (1mg/ml) solution containing 1xPBS 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-dependent stimulation of the proliferation of human TF-1 cells is < 0.2ng/ml, corresponding to a specific activity of > 5.0x106 units/mg.

    More Info

    • 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 although stable at room temperature for 3 weeks, should be stored desiccated below -18°C. Upon reconstitution Oncostatin 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 in sterile 18MΩ-cm H2O not less than 100µg/ml, which can then be further diluted to other aqueous solutions.

    • Amino Acid Sequence

      AAIGSCSKEY RVLLGQLQKQ TDLMQDTSRL LDPYIRIQGL DVPKLREHCR ERPGAFPSEE TLRGLGRRGF LQTLNATLGC VLHRLADLEQ RLPKAQDLER SGLNIEDLEK LQMARPNILG LRNNIYCMAQ LLDNSDTAEP TKAGRGASQP PTPTPASDAF QRKLEGCRFL HGYHRFMHSV GRVFSKWGES PNRSR.

    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.

    Oncostatin M Human 195 Aa
  • View Data Sheet

    Name :

    Leptin Protein

    Description:

    Leptin Human Recombinant

    OB Protein, Obesity Protein, OBS, Obesity factor.

    Product # :

    CYT-228

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    Description

    Leptin Human 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 0.0045mM NaHCO3.

    Purity

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

    Biological Activity

    Biological Activity is 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 water or 0.4% NaHCO3 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 five N-terminal amino acids was determined and was found to be Ala-Val-Pro-Ile-Gln.

    • Protein content

      Protein quantitation was carried out by UV spectroscopy at 280 nm using the absorbency value of 0.87 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 Human
  • View Data Sheet

    Name :

    EGFR Human Sf9

    Description:

    Epidermal Growth Factor Receptor Sf9 Human Recombinant

    Epidermal growth factor receptor, EC 2.7.10.1, Receptor tyrosine-protein kinase ErbB-1, ERBB, mENA, ERBB1, EGFR.

    Product # :

    PKA-344

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    Description

    The EGFR contains the extracellular domain of the human EGFR (25-647 a.a.) excluding the signal peptide which is cleaved by the insect cells having an approximate Mw of 85kDa. The EGFR is fused to a C-terminal Strep-tag and purified by proprietary chromatographic techniques.

    Source

    Sf9 Insect Cells.

    Formulation

    ErbB1 was lyophilized from a concentrated (1mg/ml) sterile solution containing 1x PBS pH-7.4.

    Purity

    Greater than 90.0% as determined by SDS-PAGE.

    More Info

    • Introduction

      The epidermal growth factor receptor (EGF R) subfamily of receptor tyrosine kinases comprises four members: EGF R (also known as HER1, ErbB1 or ErbB), ErbB2 (Neu, HER-2), ErbB3 (HER-3), and ErbB4 (HER-4). All family members are type I transmembrane glycoprotein that has an extracellular domain which contains two cysteine-rich domains separated by a spacer region that is involved in ligand-binding, and a cytoplasmic domain which has a membrane-proximal tyrosine kinase domain and a C-terminal tail with multiple tyrosine autophosphorylation sites. The human EGF R gene encodes a 1210 amino acid (aa) residue precursor with a 24 aa putative signal peptide, a 621 aa extracellular domain, a 23 aa transmembrane domain, and a 542 aa cytoplasmic domain. EGF R has been shown to bind a subset of the EGF family ligands, including EGF, amphiregulin, TGF-a , betacellulin, epiregulin, HBEGF and neuregulin-2 in the absence of a co-receptor. Ligand binding induces EGF R homodimerization as well as heterdimerization with ErbB2, resulting in kinase activation, tyrosine phosphorylation and cell signaling. EGF R can also be recruited to form heterodimers with the ligand-activated ErbB3 or ErbB4. EGF R signaling has been shown to regulate multiple biological functions including cell proliferation, differentiation, motility and apoptosis. In addition, EGF R signaling has also been shown to play a role in carcinogenesis.

    • Synonyms

      Epidermal growth factor receptor, EC 2.7.10.1, Receptor tyrosine-protein kinase ErbB-1, ERBB, mENA, ERBB1, EGFR.

    • Physical Appearance

      Sterile Filtered White lyophilized (freeze-dried) powder.

    • Stability

      Lyophilized EGFR although stable at room temperature for 3 weeks, should be stored desiccated below -18°C. Upon reconstitution EGFR 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 EGFR in sterile PBS not less than 100µg/ml, which can then be further diluted to other aqueous solutions.

    • Amino Acid Sequence

      LEEKKV CQGTSNKLTQ LGTFEDHFLS LQRMFNNCEV VLGNLEITYV QRNYDLSFLK TIQEVAGYVL IALNTVERIP LENLQIIRGN MYYENSYALA VLSNYDANKT GLKELPMRNL QEILHGAVRF SNNPALCNVE SIQWRDIVSS DFLSNMSMDF QNHLGSCQKC DPSCPNGSCW GAGEENCQKL TKIICAQQCS GRCRGKSPSD CCHNQCAAGC TGPRESDCLV CRKFRDEATC KDTCPPLMLY NPTTYQMDVN PEGKYSFGAT CVKKCPRNYV VTDHGSCVRA CGADSYEMEE DGVRKCKKCE GPCRKVCNGI GIGEFKDSLS INATNIKHFK NCTSISGDLH ILPVAFRGDS FTHTPPLDPQ ELDILKTVKE ITGFLLIQAW PENRTDLHAF ENLEIIRGRT KQHGQFSLAV VSLNITSLGL RSLKEISDGD VIISGNKNLC YANTINWKKL FGTSGQKTKI ISNRGENSCK ATGQVCHALC SPEGCWGPEP RDCVSCRNVS RGRECVDKCK LLEGEPREFV ENSECIQCHP ECLPQAMNIT CTGRGPDNCI QCAHYIDGPH CVKTCPAGVM GENNTLVWKY ADAGHVCHLC HPNCTYGCTG PGLEGCPTNG PKIPSIAASW SHPQFEK.

    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.

    Egfr Human Sf9
  • View Data Sheet

    Name :

    F8 Human

    Description:

    Coagulation Factor-VIII Human

    Coagulation factor VIII, Procoagulant component, Antihemophilic factor, AHF, F8, F8C, F8B, HEMA, FVIII, DXS1253E, F8 protein.

    Product # :

    PRO-317

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    Description

    Human Factor VIII produced from Human Plasma contains 2332 amino acids and having a molecular mass of 330kDa. Factor-VIII is effective in the correction and prevention of severe bleeding episodes attributed to Factor VIII deficiency. The Factor-VIII is purified by proprietary chromatographic techniques.

    Source

    Human Plasma.

    Formulation

    The lyophilized protein 200IU/ml was lyophilized from a sterile solution containing 1.5% Glycine, 160mM Calcium chloride and 25mM NaCitrate and 25mM NaCl.

    Biological Activity

    The potency was found to be 10 Units/mg.

    More Info

    • Introduction

      Coagulation factor VIII participates in the intrinsic pathway of blood coagulation; factor VIII is a cofactor for factor IXa which, in the presence of Ca+2 and phospholipids, converts factor X to the activated form Xa. This gene produces two alternatively spliced transcripts. Transcript variant 1 encodes a large glycoprotein, isoform a, which circulates in plasma and associates with von Willebrand factor in a noncovalent complex. This protein undergoes multiple cleavage events. Transcript variant 2 encodes a putative small protein, isoform b, which consists primarily of the phospholipid binding domain of factor VIIIc. This binding domain is essential for coagulant activity. Defects in this gene results in hemophilia A, a common recessive X-linked coagulation disorder.

    • Synonyms

      Coagulation factor VIII, Procoagulant component, Antihemophilic factor, AHF, F8, F8C, F8B, HEMA, FVIII, DXS1253E, F8 protein.

    • Physical Appearance

      Sterile Filtered White lyophilized (freeze-dried) powder.

    • Stability

      Lyophilized Factor-VIII although stable at room temperature for 1 week, should be stored desiccated between 2-8°C. Upon reconstitution Factor-VIII should be stored at 4°C.

    • Solubility

      It is recommended to reconstitute the lyophilized Factor-VIII in sterile 18MΩ-cm H2O at a concentration of 200IU/ml, which can then be further diluted to other aqueous solutions.

      Make sure that the vial has reached room temperature prior to its reconstitution, otherwise it might precipitate.

    • Human Virus Test

      The plasma is collected from donors with Hepatitis B vaccinated. Each unit of plasma has been tested for HBsAg, Anti-HIV-1/2 plus O and Anti-HCV by using the imported kits which are approved by Federal Drug Administration (FDA).

    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 Viii
  • View Data Sheet

    Name :

    VEGFR2 Human, His

    Description:

    Vascular Endothelial Growth Factor receptor-2 Human Recombinant, His Tag

    KDR D1-7, sKDR D1-7, Kinase insert domain receptor, Protein-tyrosine kinase receptor Flk-1, CD309, type III receptor tyrosine kinase, FLK1, VEGFR-2. 

    Product # :

    PKA-099

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    Description

    VEGFR2 Human Recombinant produced in Sf9 Baculovirus cells is a single, glycosylated polypeptide chain containing 987 amino acids (20-764a.a) and having a molecular mass of 110.5kDa (Molecular size on SDS-PAGE will appear at approximately 100-150kDa). VEGFR2 is fused to a 239 amino acids hIgG-His-tag at C-terminus & purified by proprietary chromatographic techniques.

    Source

    Sf9, Baculovirus cells.

    Formulation

    VEGFR2 solution (0.5mg/ml) contains Phosphate Buffered Saline (pH 7.4) and 10% glycerol.

    Purity

    Greater than 90% as determined by SDS-PAGE.

    More Info

    • Introduction

      Endothelial cells express three different vascular endothelial growth factor (VEGF) receptors, belonging to the family of receptor tyrosine kinases (RTKs). They are named VEGFR-1 (Flt-1), VEGFR-2 (KDR/Flk-1), VEGFR-3 (Flt-4). Their expression is almost exclusively restricted to endothelial cells, but VEGFR-1 can also be found on monocytes. All VEGF-receptors have seven immunoglobulin-like extracellular domains, a single transmembrane region and an intracellular split tyrosine kinase domain. VEGFR-2 has a lower affinity for VEGF than the Flt-1 receptor, but a higher signaling activity. Mitogenic activity in endothelial cells is mainly mediated by VEGFR-2 leading to their proliferation.
      Differential splicing of the flt-1 gene leads to the formation of a secreted, soluble variant of VEGFR-1 (sVEGFR-1). No naturally occuring, secreted forms of VEGFR-2 have so far been reported. The binding of VEGF165 to VEGFR-2 is dependent on heparin.

    • Synonyms

      KDR D1-7, sKDR D1-7, Kinase insert domain receptor, Protein-tyrosine kinase receptor Flk-1, CD309, type III receptor tyrosine kinase, FLK1, VEGFR-2.

    • 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

      ADPASVGLPS VSLDLPRLSI QKDILTIKAN TTLQITCRGQ RDLDWLWPNN QSGSEQRVEV TECSDGLFCK TLTIPKVIGN DTGAYKCFYR ETDLASVIYV YVQDYRSPFI ASVSDQHGVV YITENKNKTV VIPCLGSISN LNVSLCARYP EKRFVPDGNR ISWDSKKGFT IPSYMISYAG MVFCEAKIND ESYQSIMYIV VVVGYRIYDV VLSPSHGIEL SVGEKLVLNC TARTELNVGI DFNWEYPSSK HQHKKLVNRD LKTQSGSEMK KFLSTLTIDG VTRSDQGLYT CAASSGLMTK KNSTFVRVHE KPFVAFGSGM ESLVEATVGE RVRIPAKYLG YPPPEIKWYK NGIPLESNHT IKAGHVLTIM EVSERDTGNY TVILTNPISK EKQSHVVSLV VYVPPQIGEK SLISPVDSYQ YGTTQTLTCT VYAIPPPHHI HWYWQLEEEC ANEPSQAVSV TNPYPCEEWR SVEDFQGGNK IEVNKNQFAL IEGKNKTVST LVIQAANVSA LYKCEAVNKV GRGERVISFH VTRGPEITLQ PDMQPTEQES VSLWCTADRS TFENLTWYKL GPQPLPIHVG ELPTPVCKNL DTLWKLNATM FSNSTNDILI MELKNASLQD QGDYVCLAQD RKTKKRHCVV RQLTVLERVA PTITGNLENQ TTSIGESIEV SCTASGNPPP QIMWFKDNET LVEDSGIVLK DGNRNLTIRR VRKEDEGLYT CQACSVLGCA KVEAFFIIEG AQEKTNLELE PKSCDKTHTC PPCPAPELLG GPSVFLFPPK PKDTLMISRT PEVTCVVVDV SHEDPEVKFN WYVDGVEVHN AKTKPREEQY NSTYRVVSVL TVLHQDWLNG KEYKCKVSNK ALPAPIEKTI SKAKGQPREP QVYTLPPSRD ELTKNQVSLT CLVKGFYPSD IAVEWESNGQ PENNYKTTPP VLDSDGSFFL YSKLTVDKSR WQQGNVFSCS VMHEALHNHY TQKSLSLSPG KHHHHHH.

    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.

    Human Vegfr2
  • View Data Sheet

    Name :

    GDF15 Human, His

    Description:

    Growth and Differentiation Factor 15 Human Recombinant, His Tag

    GDF-15, MIC1, MIC-1, NAG-1, PDF, PLAB, PTGFB, Growth/differentiation factor 15, Placental bone morphogenetic protein, Placental TGF-beta, Macrophage inhibitory cytokine 1, Prostate differentiation factor, NSAID-activated gene 1 protein, NSAID-regulated gene 1 protein, NRG-1, GDF15.

    Product # :

    CYT-691

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    Description

    Recombinant Human GDF15 produced in E.Coli is a single, non-glycosylated polypeptide chain containing 151 amino acids (195-308) and having a molecular mass of 16.7 kDa(molecular weight on SDS-PAGE will appear higher).GDF15 is expressed with a 36 amino acid His tag fused at N-Terminus and purified by proprietary chromatographic techniques.

    Source

    Escherichia Coli.

    Formulation

    The GDF15 protein solution contains 10mM sodium citrate, pH-3.5 & 10% glycerol.

    Purity

    Greater than 95.0% as determined by SDS-PAGE.

    More Info

    • Introduction

      GDF15 is part of the TGF-Beta superfamily that is involved in regulating inflammatory and apoptotic pathways in injured tissues and throughout disease processes. GDF15 is most abundant in the liver. Its expression in liver can be considerably up-regulated in during injury of organs such as liver, kidney, heart and lung. GDF-15 promotes proliferation or growth arrest and differentiation due to differences in cellular differentiation. GDF15 prevents apoptosis in cerebellar granule neurons by activating Akt and inhibiting endogenously active ERK. GDF15 is a novel autocrine/endocrine factor that antagonizes the hypertrophic response and loss of ventricular performance.

    • Synonyms

      GDF-15, MIC1, MIC-1, NAG-1, PDF, PLAB, PTGFB, Growth/differentiation factor 15, Placental bone morphogenetic protein, Placental TGF-beta, Macrophage inhibitory cytokine 1, Prostate differentiation factor, NSAID-activated gene 1 protein, NSAID-regulated gene 1 protein, NRG-1, GDF15.

    • 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

      MRGSHHHHHH GMASMTGGQQ MGRDLYDDDD KDRWGSMARA RNGDHCPLGP GRCCRLHTVR ASLEDLGWAD WVLSPREVQV TMCIGACPSQ FRAANMHAQI KTSLHRLKPD TVPAPCCVPA SYNPMVLIQK TDTGVSLQTY DDLLAKDCHC I.

    • Background

      What is the molecular weight/Mw of GDF15 HUMAN, HIS Protein?
      GDF15 HUMAN, HIS Protein has a total Mw of 16.7kDa.

      What is the source or expression system of GDF15 HUMAN, HIS Protein?
      Escherichia Coli.

      What is the Purity of GDF15 HUMAN, HIS Protein?
      GDF15 HUMAN, HIS Protein is >95% pure as determined by SDS-PAGE.

      What is the Biological Activity of GDF15 HUMAN, HIS Protein?
      The biological functionality of GDF15 HUMAN, HIS Protein will be determined in the future.

      What is the amino acid sequence of GDF15 HUMAN, HIS Protein?
      MRGSHHHHHH GMASMTGGQQ MGRDLYDDDD KDRWGSMARA RNGDHCPLGP GRCCRLHTVR ASLEDLGWAD WVLSPREVQV TMCIGACPSQ FRAANMHAQI KTSLHRLKPD TVPAPCCVPA SYNPMVLIQK TDTGVSLQTY DDLLAKDCHC I.

      What applications can GDF15 HUMAN, HIS Protein be used in?
      GDF15 HUMAN, HIS Protein can probably be used in western blot, ELISA and
      Lateral Flow.

      What is the endotoxin level for GDF15 HUMAN, HIS Protein?
      The endotoxin level is minimal, GDF15 HUMAN, 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.

    Gdf15 Human
  • View Data Sheet

    Name :

    Leptin Rabbit

    Description:

    Leptin Rabbit Recombinant

    OB Protein, Obesity Protein, OBS, Obesity factor.

    Product # :

    CYT-507

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    Description

    Leptin Rabbit 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) Analysis by SEC-HPLC.
    (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 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 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 0.505 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 Rabbit
  • View Data Sheet

    Name :

    MET Human

    Description:

    Met Proto-Oncogene Human Recombinant

    Hepatocyte growth factor receptor, HGF receptor, HGF/SF receptor, Proto-oncogene c-Met, Scatter factor receptor, SF receptor, Tyrosine-protein kinase Met, MET,HGFR, AUTS9, RCCP2.

    Product # :

    PRO-207

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    Description

    Met Proto-Oncogene Human Recombinant produced in Insect cells amino acids 1039-1345, having a molecular weight of 34.6kDa.MET is purified by proprietary chromatographic techniques.

    Source

    Insect cells.

    Formulation

    MET protein (1mg/ml) is supplied in 50mM Tris, 300mM NaCl, 10% Glycerol, pH 7.5.

    Purity

    Greater than 90.0% as determined by SDS-PAGE.

    More Info

    • Introduction

      Mesenchymal epithelial transition factor (c-MET) is a proto-oncogenic receptor tyrosine kinase. The endogenous ligand for c-MET is HGF (hepatocyte growth factor), which is a disulfide-linked heterodimeric molecule produced predominantly by mesenchymal cells. In the adult, c-MET protein expression is limited to stem and progenitor cells and is required for wound healing and hepatocyte regeneration. In the embryo, c-MET receptors are expressed on cells of epithelial origin, which are vital for invasive growth and mediate epithelial-mesenchymal transition (EMT). Abnormal activation of the HGF/MET pathway leads to a variety of cancers. c-MET mutation is linked with a poor prognosis since it can trigger tumor growth, angiogenesis and metastasis.

    • Synonyms

      Hepatocyte growth factor receptor, HGF receptor, HGF/SF receptor, Proto-oncogene c-Met, Scatter factor receptor, SF receptor, Tyrosine-protein kinase Met, MET,HGFR, AUTS9, RCCP2.

    • Physical Appearance

      Sterile Filtered clear 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.Please avoid freeze thaw cycles.

    • Amino Acid Sequence

      DSDISSPLLQNTVHIDLSALNPELVQAVQHVVIGPSSLIVHFNEVIGRGHFGCVYHGTL
      LDNDGKKIHCAVKSLNRITDIGEVSQFLTEGIIMKDFSHPNVLSLLGICLRSEGSPLVVL
      PYMKHGDLRNFIRNETHNPTVKDLIGFGLQVAKGMKYLASKKFVHRDLAARNCMLDE
      KFTVKVADFGLARDMYDKEYYSVHNKTGAKLPVKWMALESLQTQKFTTKSDVWSFG
      VLLWELMTRGAPPYPDVNTFDITVYLLQGRRLLQPEYCPDPLYEVMLKCWHPKAEM
      RPSFSELVSRISAIFSTFI.

    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.

    Met Human
  • View Data Sheet

    Name :

    LGALS14 Human

    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

    Name :

    TFF3 Human

    Description:

    Trefoil Factor-3 Human Recombinant

    TFF-3, ITF, TFI, HITF, hP1.B, TFF3, Trefoil factor 3, Intestinal trefoil factor.

    Product # :

    CYT-005

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    • source
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    Description

    TFF-3 Human Recombinant produced in E.Coli is a homodimeric, non-glycosylated, polypeptide chain containing 2 x 59 amino acid chains which includes a 40 amino acid trefoil motif containing 3 conserved interamolecular disulfide bonds and having a total molecular mass of 13.2kDa. TFF-3 Human Recombinant is purified by proprietary chromatographic techniques.

    Source

    Escherichia Coli.

    Formulation

    Lyophilized from a 0.2µm filtered concentrated solution in PBS, pH 7.4.

    Purity

    Greater than 97.0% as determined by RP-HPLC and SDS-PAGE analysis.

    Biological Activity

    The ED50 as determined by a chemotaxis bioassay using human MCF-7 cells is less than 10µg/ml, corresponding to a specific activity of > 100IU/mg.

    More Info

    • Introduction

      Proteins of the TFF family are characterized by obtaining a minimum of 1 copy of the trefoil motif, a 40-amino acid domain that contains 3 conserved disulfides. Trefoil Factors are stable secretory proteins expressed in gastrointestinal mucosa which protect the mucosa from insults, stabilize the mucus layer and affect healing of the epithelium.TFF2 inhibits gastric acid motility & secretion. TFF2 stabilizes glycoproteins in the mucus gel through interactions with carbohydrate side chains. TFF3 induces ciliogenesis and promotes airway epithelial ciliated cell differentiation, relatively through an epidermal growth factor receptor-dependent pathway. TFF3 overexpression is crucial for progression in mouse and human hepatocellular carcinogenesis. TFF-3 is normally expressed in hepatocellular carcinoma and its expression associates with tumor grade.

    • Synonyms

      TFF-3, ITF, TFI, HITF, hP1.B, TFF3, Trefoil factor 3, Intestinal trefoil factor.

    • Physical Appearance

      Sterile Filtered White lyophilized (freeze-dried) powder.

    • Stability

      Lyophilized TFF3 although stable at room temperature for 3 weeks, should be stored desiccated below -18°C. Upon reconstitution TFF3 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 TFF3 in sterile 18M-cm H2O not less than 100µg/ml, which can then be further diluted to other aqueous solutions.

    • Amino Acid Sequence

      EEYVGLSANQ CAVPAKDRVD CGYPHVTPKE CNNRGCCFDS RIPGVPWCFK PLQEAECTF.

    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.

    Tff3 Human
  • View Data Sheet

    Name :

    F8 Protein

    Description:

    Coagulation Factor-VIII Human Recombinant

    Coagulation factor VIII, Procoagulant component, Antihemophilic factor, AHF, F8, F8C, F8B, HEMA, FVIII, DXS1253E, F8 protein.

    Product # :

    PRO-318

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    Description

    Antihemophilic Facor Human Recombinant produced in CHO is a glycosylated polypeptide chain having 2332 amino acids. The Factor-VIII is purified by proprietary chromatographic techniques.

    Source

    CHO cells (Chinese Hamster Ovarian Cells).

    Formulation

    Each 250IU vial was lyophilized from a solution containing 8mg Tween-80, 112mM NaCl, 40mg Mannitol, 10mg Trehalose, 1ng VWF and 4.2mM CaCl2.

    Purity

    Greater than 97.0% as determined by SDS-PAGE.

    Biological Activity

    The specific activity was found to be 7,058 IU/mg.

    More Info

    • Introduction

      Coagulation factor VIII participates in the intrinsic pathway of blood coagulation; factor VIII is a cofactor for factor IXa which, in the presence of Ca+2 and phospholipids, converts factor X to the activated form Xa. This gene produces two alternatively spliced transcripts. Transcript variant 1 encodes a large glycoprotein, isoform a, which circulates in plasma and associates with von Willebrand factor in a noncovalent complex. This protein undergoes multiple cleavage events. Transcript variant 2 encodes a putative small protein, isoform b, which consists primarily of the phospholipid binding domain of factor VIIIc. This binding domain is essential for coagulant activity. Defects in this gene results in hemophilia A, a common recessive X-linked coagulation disorder.

    • Synonyms

      Coagulation factor VIII, Procoagulant component, Antihemophilic factor, AHF, F8, F8C, F8B, HEMA, FVIII, DXS1253E, F8 protein.

    • Physical Appearance

      Sterile Filtered White lyophilized (freeze-dried) powder.

    • Stability

      Lyophilized Factor-VIII although stable at room temperature for 3 weeks, should be stored desiccated below -18°C. Upon reconstitution Factor-VIII 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 250IU lyophilized Factor-VIII in 5ml sterile 18M-cm H2O, which can then be further diluted to other aqueous 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.

    Factor Viii Human Recombinant
  • View Data Sheet

    Name :

    GMFB Rat

    Description:

    Glia Maturation Factor Beta Rat Recombinant

    Glia maturation factor beta, GMFB, GMF-B, GMF-beta, GMF, C79176, AI851627, D14Ertd630e, 3110001H22Rik, 3110001O16Rik.

    Product # :

    CYT-049

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    Description

    Glia Maturation Factor-Beta (GMF-Beta) Rat Recombinant produced in E.Coli is a signle, non-glycosylated, polypeptide chain containing 141 amino acids and having a total molecular mass of 16.6kDa. GMF-Beta is purified by proprietary chromatographic techniques.

    Source

    Escherichia Coli.

    Formulation

    Lyophilized from a 0.2µm filtered concentrated (1.0mg/ml) solution in 1×PBS, pH 7.4.

    Purity

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

    More Info

    • Introduction

      GMFB is part of the GMF subfamily of the larger actin-binding protein ADF family. GMFB is phosphorylated after phorbol ester stimulation, and is crucial for the nervous system. GMFB causes brain cell differentiation, stimulates neural regeneration and inhibits tumor cell proliferation. GMFB overexpression in astrocytes results in the increase of BDNF production. GMFB expression is increased by exercise, thus BDNF is important for exercise-induction of BDNF.

    • Synonyms

      Glia maturation factor beta, GMFB, GMF-B, GMF-beta, GMF, C79176, AI851627, D14Ertd630e, 3110001H22Rik, 3110001O16Rik.

    • Physical Appearance

      Sterile Filtered White lyophilized (freeze-dried) powder.

    • Stability

      Lyophilized GMFB although stable at room temperature for 3 weeks, should be stored desiccated below -18C. Upon reconstitution GMFB should be stored at 4C between 2-7 days and for future use below -18C.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 GMFB in sterile 18M-cm H2O not less than 100µg/ml, which can then be further diluted to other aqueous solutions.

    • Amino Acid Sequence

      SESLVVCDVA EDLVEKLRKF RFRKETHNAA IIMKIDKDKR LVVLDEELEG VSPDELKDEL PERQPRFIVY SYKYQHDDGR VSYPLCFIFS SPLGCKPEQQ MMYAGSKNKL VQTAELTKVF EIRNTEDLTE EWLREKLGFF H.

    • Background

      What is the molecular weight/Mw of GMFB RAT Protein?
      GMFB RAT Protein has a total Mw of 16.6kDa.

      What is the source or expression system of GMFB RAT Protein?
      Escherichia Coli.

      What is the Purity of GMFB RAT Protein?
      GMFB RAT Protein is >97% pure as determined by SDS-PAGE.

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

      What is the amino acid sequence of GMFB RAT Protein?
      SESLVVCDVA EDLVEKLRKF RFRKETHNAA IIMKIDKDKR LVVLDEELEG VSPDELKDEL PERQPRFIVY SYKYQHDDGR VSYPLCFIFS SPLGCKPEQQ MMYAGSKNKL VQTAELTKVF EIRNTEDLTE EWLREKLGFF H.

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

      What is the endotoxin level for GMFB RAT Protein?
      The endotoxin level is minimal, GMFB RAT 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.

    Gmf B Rat
  • View Data Sheet

    Name :

    Leptin Rat, PEG

    Description:

    Pegylated Rat Leptin Recombinant

    OB Protein, Obesity Protein, OBS, Obesity factor.

    Product # :

    CYT-592

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    Description

    Mono-Pegylated Leptin Rat Recombinant produced in E.Coli is a single, non-glycosylated, polypeptide chain containing 146 amino acids and an additional Ala at N-terminus having a molecular mass of 35.6 kDa (with 20 kDa PEG) as determined by mass spectometry. However due to enlarged hydrodymanic volume it runs on the SDS-PAGE as 48 kDa protein and in gel-filtration on Superdex 200 as over 100 kDa protein. Its half-life in circulation after SC injection was over 20 hours. Rat Leptin was purified by proprietary chromatographic techniques according to Salomon et al (2006) Protein Expression and Purification 47, 128–136 and then pegylated.

    Source

    Escherichia Coli.

    Formulation

    The protein was lyophilized from a concentrated (0.65mg/ml) solution with 0.003mM NaHCO3.

    Purity

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

    Biological Activity

    Pegylated Rat Leptin is capable of stimulatng proliferation of BAF/3 cells stably transfected with the long form of human leptin receptor. Its in vitro activity is only slightly lower than the non-pegylated antagonist but in vivo it has profound weight reducing effect (as compared to the non-pegylated leptin), resulting mainly from reduced food intake.

    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 pegylated Rat Leptin Antagonist although stable at room temperature for several weeks, should be stored desiccated below -18°C. Upon reconstitution of pegylated Rat Leptin at > 0.1 mg/ml and up to 2 mg/ml and filter sterilization Rat leptin can be stored at 4C 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 pegylated Rat Leptin in sterile water or in sterile 0.4% NaHCO3 adjusted to pH-8.5, not less than 100µg/ml, which can then be further diluted to other aqueous 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.

    Leptin Rat Pegylated
  • View Data Sheet

    Name :

    Leptin Pufferfish

    Description:

    Leptin Pufferfish Recombinant

    OB Protein, Obesity Protein, OBS, Obesity factor.

    Product # :

    CYT-530

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    Description

    Leptin Pufferfish (Takifugu rubripes) Recombinant produced in E.Coli is a single, non-glycosylated, polypeptide chain having a molecular mass of 16 kDa. Bioactive Leptin Pufferfish (Takifugu rubripes) Recombinant was prepared according to the sequence published by Kurokawa et al. (2005)Peptides 26, 745-750 in two forms: monomer and covalent dimer. MS analysis revealed molecular masses of 15,291 and 30,585 Da, close to the theoretical values of 15,270 and 30,540 Da. CD spectra revealed high similarity to mammalian leptins. Other details of its preparation will be soon published by Yacobovitz et al (in press), General and Comparative Endocrinology.The Pufferfish Leptin is purified by proprietary chromatographic techniques.

    Source

    Escherichia Coli.

    Formulation

    The Pufferfish Leptin was lyophilized from a concentrated (0.85mg/ml) solution with 0.003mM NaHCO3.

    Purity

    Greater than 99.0% as determined by:
    (a) Analysis by SEC-HPLC.
    (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. The affinity of human leptin receptors is considerably lower campared to mammalian leptins.

    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 Pufferfish 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 Pufferfish Leptin in sterile 0.4% NaHCO3 pH-9 not less than 100µg/ml, which can then be further diluted to other aqueous solutions.

    • Amino Acid Sequence

      ALPGALDAMDVEKMKSKVTWKAQGLVARIDKHFPDRGLRFDTDKVE

      GSTSVVASLESYNNLISDRFGGVSQIKTEISSLAGYLNHWREGNCQE

      QQPKVWPRRNIFNHTVSLEALMRVREFLKLLQKNVDLLERC

    • Protein content

      Protein quantitation was carried out by UV spectroscopy at 280 nm using the absorbency value of 1.28 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 Pufferfish
  • View Data Sheet

    Name :

    PIP Protein

    Description:

    Prolactin-Induced Protein Human Recombinant

    Prolactin-inducible protein, Gross cystic disease fluid protein 15, GCDFP-15, Prolactin-induced protein, Secretory actin-binding protein, SABP, gp17, GCDFP15, GPIP4, PIP.

    Product # :

    CYT-793

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    • description
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    • purity
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    Description

    PIP Human Recombinant produced in E.Coli is a single, non-glycosylated polypeptide chain containing 141 amino acids (29-146 a.a.) and having a molecular mass of 15.9kDa.PIP is fused to a 23 amino acid His-tag at N-terminus & purified by proprietary chromatographic techniques.

    Source

    Escherichia Coli.

    Formulation

    PIP protein solution (1mg/ml) contains 20mM Tris-HCl buffer, (pH 8.0), 10% glycerol and 0.4M Urea.

    Purity

    Greater than 90% as determined by SDS-PAGE.

    More Info

    • Introduction

      Prolactin-inducible protein (PIP) is a main protein component of benign breast gross cysts. PIP is a famous indicator of breast cancer, since it is found in around 50% of all breast cancer specimens. PIP is expressed in exocrine glands, in pathologic conditions, in breast cysts and breast cancers exhibiting apocrine features. PIP and prostate specific antigen are co-expressed in androgen receptor-positive breast tumours.

    • Synonyms

      Prolactin-inducible protein, Gross cystic disease fluid protein 15, GCDFP-15, Prolactin-induced protein, Secretory actin-binding protein, SABP, gp17, GCDFP15, GPIP4, PIP.

    • 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 MGSQDNTRKI IIKNFDIPKS VRPNDEVTAV LAVQTELKEC MVVKTYLISS IPLQGAFNYK YTACLCDDNP KTFYWDFYTN RTVQIAAVVD VIRELGICPD DAAVIPIKNN RFYTIEILKV E.

    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.

    Human Pip
  • View Data Sheet

    Name :

    Leptin Receptor Chicken

    Description:

    Leptin Receptor Chicken Recombinant

    OB Protein, Obesity Protein, OBS, Obesity factor, Leptin Receptor.

    Product # :

    CYT-509

    Price :

    Quantity :

    Shipping Method :

    Ice Icon

    Shipped with Ice Packs

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    More Info

    • description
    • source
    • formulation
    • purity
    • More Info

    Description

    Leptin Binding Domain Chicken Recombinant also called Leptin Receptor produced in E.Coli is a single, non-glycosylated, polypeptide chain containing 208 amino acids and having a molecular mass of 24.5 kDa. Chicken Leptin Receptor consists of the cytokine binding domain of leptin receptor amino acids 420-626 of chicken leptin receptor.The Leptin Binding Domain is purified by proprietary chromatographic techniques.

    Source

    Escherichia Coli.

    Formulation

    The protein was filter sterilized and stored at 4°C (0.2 to 0.5 mg/ml) solution of Tris-HCl buffer, pH 9.0 with 150mM NaCl.

    Purity

    Greater than 99.0% as determined by:
    (a) Analysis by SEC-HPLC.
    (b) Analysis by SDS-PAGE.

    More Info

    • Introduction

      Leptin Receptor is a part of the gp130 family of cytokine receptors that stimulate gene transcription by activating cytosolic STAT proteins. Leptin Receptor plays a role in the regulation of fat metabolism and in novel hematopoietic pathway that is obligatory for normal lymphopoiesis. Leptin Receptorparticipates in the regulation of counter-regulatory response to hypoglycemia by inhibiting neurons of the parabrachial nucleus.Leptin Receptoraffectsspecifically on T lymphocyte responses.

    • Synonyms

      OB Protein, Obesity Protein, OBS, Obesity factor, Leptin Receptor.

    • Physical Appearance

      Sterile Filtered colorless solution at a concentration of 0.4 mg/ml.

    • Stability

      Sterile solutions at 0.5mg/ml or less are stable at 4°C for several months.

    • Amino Acid Sequence

      The sequence of the first six N-terminal amino acids was determined and was found to be Ala-Ile-Asp-Val-Asn-Ile Biological ActivityBiological Activity is evidenced by high affinity binding of mammalian leptins at 1:1 molar ratio.

    • Protein content

      Protein quantitation was carried out by two independent methods1. UV spectroscopy at 280 nm using the absorbency value of 2.45 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). 2. Analysis by RP-HPLC, using a calibrated solution of Leptin Binding Domain as a Reference Standard.

    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 Receptor Chicken
  • View Data Sheet

    Name :

    Leptin Human, Mutant

    Description:

    Leptin Mutant D23L Human Recombinant

    OB Protein, Obesity Protein, OBS, Obesity factor.

    Product # :

    CYT-1243

    Price :

    Quantity :

    Shipping Method :

    Room Temp Icon

    Shipped at Room temp

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    More Info

    • description
    • source
    • formulation
    • purity
    • biological activity
    • More Info

    Description

    Human Leptin Mutant D23L is a single non-glycosilated polypeptide chain containing 146 amino and additional Ala at N-terminus and having a molecular mass of ~ 16 kDa. Leptin Mutant was purified by proprietary chromatographic techniques.

    Source

    Escherichia coli.

    Formulation

    Leptin Mutant was lyophilized from a concentrated (1mg/ml) solution with 0.0045mM NaHCO3.

    Purity

    Greater than 95.0% as determined by:

    (a) Gel filtration analysis.

    (b) Analysis by SDS-PAGE.

    Biological Activity

    Human Leptin Mutant D23L is fully biologically active as evidenced by inducing proliferation of BAF/3 cells stably transfected with the long form of human leptin receptor.

    More Info

    • Synonyms

      OB Protein, Obesity Protein, OBS, Obesity factor.

    • Physical Appearance

      White lyophilized (freeze-dried) powder.

    • Stability

      Lyophilized Human Leptin Mutant D23L although stable at room temperature for several weeks, should be stored desiccated below -18°C. Upon reconstitution at > 0.1 Leptin mutant 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 Mutant 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.

    • Amino Acid Sequence

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

    • Background

      Leptin’s main part is to regulate long-term energy balance. Leptin is a hormone which mainly produced by adipocytes and is encoded by the LEP gene. Leptin effects mainly on leptin receptors in the cell mambrane of various cells in the human body. The leptin receptor is found on a wide range of cell types. The leptin receptor is a single-transmembrane-domain type 1 cytokine receptor. leptin levels influence satiety, appetite and triggers behaviors which lead to energy savings 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.

    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.

    Mutant Leptin
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