Search: 1000 results found for "Centrin"

Description:

Der P1 Protein Recombinant

Peptidase 1, Major mite fecal allergen Der p 1, Allergen Der p I, Der p 1, DERP1, Der-P1.

Product # :

ALR-003

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Description

The E.Coli derived recombinant protein contains the Dermatophagoides pteronyssinus Dust Mite Der P1 protein (a.a. 20-320) and fused to a 6 His Tag at C-terminus, having a total Mw of 34.5kDa, pI 5.6.

Source

Escherichia Coli.

Formulation

60mM NaCl and 50mM Tris-HCl pH 8.0.

Purity

Protein is >95% pure as determined by 10% SDS-PAGE (coomassie staining).

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Introduction
DERP1 is a thiol protease, with a preference for substrates with a large hydrophobic side chain in the P2 position, or with basic residues. DERP1 is a C1 peptidase family member. DERP1 has extensive endopeptidase specificity. DERP1 is N-glycosylated. N-glycanase treatment does not completely remove carbohydrates, suggesting that the protein contains additional glycosylation sites. DERP1 causes an allergic reaction in humans. Common symptoms of mite allergy are bronchial asthma, allergic rhinitis and conjunctivitis. DERP1 binds to IgE in 80% of patients with house dust allergy.
Synonyms
Peptidase 1, Major mite fecal allergen Der p 1, Allergen Der p I, Der p 1, DERP1, Der-P1.
Physical Appearance
Sterile filtered colorless solution.
Stability
Der-P1 although stable at 4°C for 1 week, should be stored below -18°C. Please prevent freeze thaw cycles.
Amino Acid Sequence
MSIKTFEEYKKAFNKSYATFEDEEAARKNFLESVKYVQSNGGAINHLSDLSLDEFKNRFLMSAEAFEHLKTQFDLNAETNACSINGNAPAEIDLRQMRTVTPIRMQGGCGSAWAFSGVAATESAYLAYRNQSLDLAEQELVDCASQHGCHGDTIPRGIEYIQHNGVVQESYYRYVAREQSCRRPNAQRFGISNYCQIYPPNVNKIREALAQTHSAIAVIIGIKDLDAFRHYDGRTIIQRDNGYQPNYHAVNIVGYSNAQGVDYWIVRNSWDTNWGDNGYGYFAANIDLMMIEEYPYVVILHHHHHH.
Purification Method
Purified by proprietary chromatographic technique.

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.

Description:

Interleukin-15 Rat Recombinant

IL-15, MGC9721.

Product # :

CYT-345

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Description

Interleukin-15 Rat Recombinant produced in E.Coli is a single, non-glycosylated polypeptide chain containing 115 amino acids and having a molecular mass of 13533 Dalton. The IL-15 is purified by proprietary chromatographic techniques.

Source

Escherichia Coli.

Formulation

The protein was lyophilized from 10mM Tris, pH-8.5.

Purity

Greater than 98.0% 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 the proliferation of CTLL-2 was found to be < 10 ng/ml, corresponding to a Specific Activity of 100,000IU/mg.

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Introduction
The protein encoded by this gene is a cytokine that regulates T and natural killer cell activation and proliferation. This cytokine and interleukine 2 share many biological activities. They are found to bind common hematopoietin receptor subunits, and may compete for the same receptor, and thus negatively regulate each other's activity. The number of CD8+ memory cells is shown to be controlled by a balance between this cytokine and IL2. This cytokine induces the activation of JAK kinases, as well as the phosphorylation and activation of transcription activators STAT3, STAT5, and STAT6. Studies of the mouse counterpart suggested that this cytokine may increase the expression of apoptosis inhibitor BCL2L1/BCL-x(L), possibly through the transcription activation activity of STAT6, and thus prevent apoptosis. Two alternatively spliced transcript variants of this gene encoding the same protein have been reported.
Synonyms
IL-15, MGC9721.
Physical Appearance
Sterile Filtered White lyophilized (freeze-dried) powder.
Stability
Lyophilized Interleukin-15 although stable at room temperature for 3 weeks, should be stored desiccated below -18°C. Upon reconstitution IL15 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 Interleukin-15 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 Met-Asn-Trp-Ile-Asp.

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.

Description:

Complement C7 Human

Complement component C7, C7.

Product # :

PRO-2694

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Description

Human Complement C7 produced in Human plasma having a molecular mass of 92.4kDa.

Source

Human Plasma.

Formulation

C7 protein solution contains 10mM Sodium phosphate and 145mM NaCl, pH 7.3.

Purity

Greater than 90.0% as determined by SDS-PAGE.

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Introduction
C7 is necessary for formation of the membrane attack complex and is activated by bindingat the cell membrane to recently-formed C5b,C6 complexes. Each pathway of complement activation generates proteolytic enzyme complexes which bind the target surface. These enzymes cleave a peptide bond in the larger alpha chain of C5 releasing C5a and activating C5b. Although C5b is unstable it remains bound to the activating complex for a few minutes during which it binds a single C6 from the surrounding fluid or it decays and is no longer capable of forming MAC. The C5b,6 complex may also remain connected to the C3/C5 convertase where the binding of a single C7 exposes a membrane-binding region and C5b,6,7 can enter into the bilipid layer of the target cell.
Synonyms
Complement component C7, C7.
Physical Appearance
Sterile filtered solution.
Stability
C7 Human is stable at 4°C if entire vial will be used within 2-4 weeks.Store, frozen below -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.
Human Virus Test
Plasma from each donor has been tested and found negative for antibody to HIV-1, HIV-2, HCV and HBSAG.

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.

Description:

Hepatitis C Virus Core, Biotin Recombinant

Product # :

HCV-242

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Description

The E.coli derived recombinant Biotin Labeled protein contains the HCV core nucleocapsid immunodominant regions, amino acids 2-119, having an MW of 22kDa. The protein is fused to a beta-galactosidase (114 kDa) at the N-terminus.

Formulation

20mM Tris-HCl pH 8 and 8M urea.

Purity

Protein is >95% pure as determined by SDS-PAGE.

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Introduction
HCV is a small 50nm, enveloped, single-stranded, positive sense RNAvirus in the family Flaviviridae.
HCV has a high rate of replication with approximately one trillion particles produced each day in an infected individual. Due to lack of proofreading by the HCV RNA polymerase, the HCV has an exceptionally high mutation rate, a factor that may help it elude the host's immune response. Hepatitis C virus is classified into six genotypes(1-6) with several subtypes within each genotype. The preponderance and distribution of HCV genotypes varies globally. Genotype is clinically important in determining potential response to interferon-based therapy and the required duration of such therapy. Genotypes 1 and 4 are less responsive to interferon-based treatment than are the other genotypes (2, 3, 5 and 6).
Stability
HCV Core although stable at 4°C for 1 week, should be stored below -18°C. Please prevent freeze thaw cycles.
Applications
Antigen in ELISA and Western blots, excellent antigen for detection of HCV with minimal specificity problems.
Specificity
Immunoreactive with sera of HCV-infected individuals.
Purification Method
HCV Core protein was purified by proprietary chromatographic technique.

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.

Description:

Neurofilament Light Human Recombinant

Neurofilament light polypeptide, NF-L, NEFL, NF68, NFL, 68 kDa neurofilament protein.

Product # :

PRO-2584

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Description

NEFL Human Recombinant produced in E.Coli is a single, non-glycosylated, polypeptide chain (2-543 a.a) containing 551 amino acids including a 9 a.a N-terminal His tag. The total molecular mass is 62.5kDa (calculated).

Source

Escherichia Coli.

Formulation

NEFL filtered (0.4 µm) and lyophilized from 0.5mg/ml solution in 15mM Tris and 85mM Glycine, pH 8.5.

Purity

Greater than 90.0% as determined by SDS-PAGE.

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Introduction
NEFL or Neurofilament light polypeptide is a protein that is encoded through the NEFL gene. NEFL is correlated to a disease called Charcot–Marie–Tooth. The protein’s light subunit is determined by immunoassays in the plasma and cerebrospinal fluid, if present, it can indicate on axonal damage in neurological diseases. By doing so, NEFL can act as a marker for Huntington's disease, Amyotrophic Lateral Sclerosis and multiple sclerosis.
Synonyms
Neurofilament light polypeptide, NF-L, NEFL, NF68, NFL, 68 kDa neurofilament protein.
Physical Appearance
Filtered White lyophilized (freeze-dried) powder.
Stability
Store lyophilized protein 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.
Amino Acid Sequence
MKHHHHHHAS SFSYEPYYST SYKRRYVETP RVHISSVRSG YSTARSAYSS YSAPVSSSLS VRRSYSSSSG SLMPSLENLD LSQVAAISND LKSIRTQEKA QLQDLNDRFA SFIERVHELE QQNKVLEAEL LVLRQKHSEP SRFRALYEQE IRDLRLAAED ATNEKQALQG EREGLEETLR NLQARYEEEV LSREDAEGRL MEARKGADEA ALARAELEKR IDSLMDEISF LKKVHEEEIA ELQAQIQYAQ ISVEMDVTKP DLSAALKDIR AQYEKLAAKN MQNAEEWFKS RFTVLTESAA KNTDAVRAAK DEVSESRRLL KAKTLEIEAC RGMNEALEKQ LQELEDKQNA DISAMQDTIN KLENELRTTK SEMARYLKEY QDLLNVKMAL DIEIAAYRKL LEGEETRLSF TSVGSITSGY SQSSQVFGRS AYGGLQTSSY LMSTRSFPSY YTSHVQEEQI EVEETIEAAK AEEAKDEPPS EGEAEEEEKD KEEAEEEEAA EEEEAAKEES EEAKEEEEGG EGEEGEETKE AEEEEKKVEG AGEEQAAKKK D.

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.

Description:

Platelet Factor-4 (CXCL4) Bovine Recombinant

CXCL4, PF-4, PF4, Iroplact, Oncostatin-A, SCYB4, MGC138298.

Product # :

CHM-039

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Description

Platelet Factor-4 (CXCL4) Bovine Recombinant produced in E.Coli is a non-glycosylated polypeptide chain containing 88 amino acid and having a molecular mass of approximately 9.5kDa.PF4 is purified by proprietary chromatographic techniques.

Source

Escherichia Coli.

Formulation

Lyophilized from a 0.2μm filtered concentrated solution in 20 mM PB and 500mM NaCl, pH 7.0.

Purity

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

Biological Activity

The biological activity determined by a chemotaxis bioassay using human neutrophils is 10-100ng/ml.

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Introduction
Platelet factor-4 is a 70-amino acid protein that is released from the alpha-granules of activated platelets.PF4’s major physiologic role appears to be neutralization of molecules on the endothelial surface of blood vessels, thereby inhibiting local antithrombin III activity and promoting coagulation. As a strong chemoattractant for neutrophils and fibroblasts, PF4 probably has a role in inflammation and wound repair. Oncostatin-A is a member of the CXC chemokine family. Furthermore, it is used as an inhibitor in the angiogenesis during tumor therapy.
Synonyms
CXCL4, PF-4, PF4, Iroplact, Oncostatin-A, SCYB4, MGC138298.
Physical Appearance
Sterile Filtered White lyophilized (freeze-dried) powder.
Stability
Lyophilized CXCL4 although stable at room temperature for 3 weeks, should be stored desiccated below -18°C. Upon reconstitution Platelet Factor-4 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 Platelet Factor-4 in sterile 18MΩ-cm H2O not less than 100µg/ml, which can then be further diluted to other aqueous solutions.
Amino Acid Sequence
ESSFPATFVP LPADSEGGED EDLQCVCLKT TSGINPRHIS SLEVIGAGTH CPSPQLLATK KTGRKICLDQ QRPLYKKILK KLLDGDES.
Background
What is the molecular weight/Mw of PLATELET FACTOR 4 BOVINE Protein?
PLATELET FACTOR 4 BOVINE Protein has a total Mw of 9.5kDa.

What is the source or expression system of PLATELET FACTOR 4 BOVINE Protein?
Escherichia Coli.

What is the Purity of PLATELET FACTOR 4 BOVINE Protein?
PLATELET FACTOR 4 BOVINE Protein is > 95% pure as determined by SDS-PAGE.

What is the Biological Activity of PLATELET FACTOR 4 BOVINE Protein?
The biological activity determined by a chemotaxis bioassay using human neutrophils is 10-100ng/ml.

What is the amino acid sequence of PLATELET FACTOR 4 BOVINE Protein?
ESSFPATFVP LPADSEGGED EDLQCVCLKT TSGINPRHIS SLEVIGAGTH CPSPQLLATK KTGRKICLDQ QRPLYKKILK KLLDGDES.

What applications can PLATELET FACTOR 4 BOVINE Protein be used in?
PLATELET FACTOR 4 BOVINE Protein can probably be used in western blot, ELISA and Lateral Flow.

What is the endotoxin level for PLATELET FACTOR 4 BOVINE Protein?
The endotoxin level is minimal, PLATELET FACTOR 4 BOVINE 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.

Description:

Neuropilin 1 Rat Recombinant

Neuropilin-1, Vascular endothelial cell growth factor 165 receptor, CD304, Nrp1.

Product # :

CYT-973

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Description

NRP1 Rat Recombinant produced in Sf9 Baculovirus cells is a single, glycosylated polypeptide chain containing 842 amino acids (22-855 a.a.) and having a molecular mass of 94.8kDa (Migrates at 100-150kDa on SDS-PAGE under reducing conditions).NRP1 is expressed with an 8 amino acid His tag at C-Terminus and purified by proprietary chromatographic techniques.

Source

Sf9, Baculovirus cells.

Formulation

NRP1 protein solution (0.25mg/ml) containing Phosphate Buffered Saline (pH 7.4) and 10% glycerol.

Purity

Greater than 90.0% as determined by SDS-PAGE.

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Introduction
Neuropilin 1 (Nrp1) is a transmembrane glycoprotein which functions as a co-receptor for several extracellular ligands including class III/IV semaphorins, some isoforms of vascular endothelial growth factor and transforming growth factor beta. Nrp1 binds vascular endothelial growth factor (VEGF)-A and is believed to serve as a coreceptor for kinase insert domain-containing receptor (KDR) by connecting with KDR and enhancing VEGF signaling. Nrp1 is a marker of regulatory T cells.
Synonyms
Neuropilin-1, Vascular endothelial cell growth factor 165 receptor, CD304, Nrp1.
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
FRSDKCGGTI KIENPGYLTS PGYPHSYHPS EKCEWLIQAP EPYQRIMINF NPHFDLEDRD CKYDYVEVID GENEGGRLWG KFCGKIAPSP VVSSGPFLFI KFVSDYETHG AGFSIRYEIF KRGPECSQNY TAPTGVIKSP GFPEKYPNSL ECTYIIFAPK MSEIILEFES FDLEQDSNPP GGVFCRYDRL EIWDGFPEVG PHIGRYCGQK TPGRIRSSSG ILSMVFYTDS AIAKEGFSAN YSVLQSSISE DFKCMEALGM ESGEIHSDQI TASSQYGTNW SVERSRLNYP ENGWTPGEDS YREWIQVDLG LLRFVTAVGT QGAISKETKK KYYVKTYRVD ISSNGEDWIT LKEGNKAIIF QGNTNPTDVV FGVFPKPLIT RFVRIKPASW ETGISMRFEV YGCKITDYPC SGMLGMVSGL ISDSQITASN QGDRNWMPEN IRLVTSRTGW ALPPSPHPYI NEWLQVDLGD EKIVRGVIIQ GGKHRENKVF MRKFKIAYSN NGSDWKMIMD DSKRKAKSFE GNNNYDTPEL RAFTPLSTRF IRIYPERATH SGLGLRMELL GCEVEVPTAG PTTPNGNPVD ECDDDQANCH SGTGDDFQLT GGTTVLATEK PTIIDSTIQS EFPTYGFNCE FGWGSHKTFC HWEHDSHAQL RWRVLTSKTG PIQDHTGDGN FIYSQADENQ KGKVARLVSP VVYSQSSAHC MTFWYHMSGS HVGTLRVKLH YQKPEEYDQL VWMVVGHQGD HWKEGRVLLH KSLKLYQVIF EGEIGKGNLG GIAVDDISIN NHIPQEDCAK PTDLDKKNTE IKIDETGSTP GYEEGKGDKN ISRKPGNVLK TLDPLEHHHH HH

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.

Description:

Annexin A10 (1-162 a.a.) Human Recombinant

anxa-10.

Product # :

PRO-2837

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Description

The ANXA10 Human is created as a recombinant protein with a 4kda N-terminal fusion of His Tag. The ANXA10 His-Tagged Fusion Protein, produced in E. coli, is a 21kDa protein containing 162 amino acid residues of the ANXA10 Human, 1-162 amino acids.

Source

Escherichia Coli.

Formulation

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

Purity

Greater than 90% as determined by SDS-PAGE.

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Synonyms
anxa-10.
Physical Appearance
Filtered White lyophilized (freeze-dried) powder.
Stability
Store lyophilized ANXA10 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
Annexin A10 also known as ANXA10 is a part of the annexin family of calcium-binding proteins which members own a conserved core domain and a unique amino-terminal region which may convene binding specificity. The ANXA10 protein contains 4 annexin domains and plays a role in the regulation of cellular growth and signal transduction pathways throughout the cell.

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.

Description:

Macrophage Inflammatory protein-4 (CCL18) Human Recombinant, His-Tag

Small inducible cytokine A18, CCL18, Macrophage inflammatory protein 4, MIP-4, Pulmonary and activation-regulated chemokine, CC chemokine PARC, Alternative macrophage activation-associated CC chemokine 1, AMAC-1, Dendritic cell chemokine 1, DC-CK1, chemokine (C-C motif) ligand 18, CKb7, PARC, AMAC1, DCCK1, SCYA18.

Product # :

CHM-339

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Description

MIP-4 Human Recombinant fused with a 25 amino acid His tag at N-terminus produced in E.Coli is a single, non-glycosylated, polypeptide chain containing 93 amino acids (22-89 a.a.) and having a molecular mass of 10.4kDa. The MIP-4 is purified by proprietary chromatographic techniques.

Source

Escherichia Coli.

Formulation

The MIP-4 solution (0.25 mg/ml) contains 10mM Sodium Citrate pH3.5 and 10% Glycerol.

Purity

Greater than 95.0% as determined by SDS-PAGE.

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Introduction
Chemokine (C-C motif) ligand 18 (CCL18) is a small cytokine belonging to the CC chemokine family that was previously called PARC (pulmonary and activation-regulated chemokine). CCL18 is approximately 60% identical in amino acid sequence to CCL3. It is expressed at high levels in lung and at lower levels in certain lymphoid tissues, such as the lymph nodes, and is chemotactic for activated T cells and non activated lymphocytes. The gene for human CCL18 contains three exons and is located on chromosome 17.
Synonyms
Small inducible cytokine A18, CCL18, Macrophage inflammatory protein 4, MIP-4, Pulmonary and activation-regulated chemokine, CC chemokine PARC, Alternative macrophage activation-associated CC chemokine 1, AMAC-1, Dendritic cell chemokine 1, DC-CK1, chemokine (C-C motif) ligand 18, CKb7, PARC, AMAC1, DCCK1, SCYA18.
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 MGSHMQVGTN KELCCLVYTS WQIPQKFIVD YSETSPQCPK PGVILLTKRG RQICADPNKK WVQKYISDLK LNA.
Background
What is the molecular weight/Mw of CCL18 HUMAN, HIS Protein?
CCL18 HUMAN, HIS Protein has a total Mw of 10.4kDa.

What is the source or expression system of CCL18 HUMAN, HIS Protein?
Escherichia Coli.

What is the Purity of CCL18 HUMAN, HIS Protein?
CCL18 HUMAN, HIS Protein is > 95% pure as determined by SDS-PAGE.

What is the Biological Activity of CCL18 HUMAN, HIS Protein?
The biological functionality of CCL18 HUMAN, HIS Protein will be determined in the future.

What is the amino acid sequence of CCL18 HUMAN, HIS Protein?
MGSSHHHHHH SSGLVPRGSH MGSHMQVGTN KELCCLVYTS WQIPQKFIVD YSETSPQCPK PGVILLTKRG RQICADPNKK WVQKYISDLK LNA.

What applications can CCL18 HUMAN, HIS Protein be used in?
CCL18 HUMAN, HIS Protein can probably be used in western blot, ELISA and Lateral Flow.

What is the endotoxin level for CCL18 HUMAN, HIS Protein?
The endotoxin level is minimal, CCL18 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.

Description:

Interleukin-18 Human Recombinant

IGIF, IL-1g, IL-18, IL1F4, MGC12320, IFN-gamma-inducing factor, Interleukin-1 gamma, IL-1 gamma, Iboctadekin.

Product # :

CYT-269

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Description

Interleukin-18 Human Recombinant produced in E.Coli is a single, non-glycosylated polypeptide chain containing 157 amino acids and having a molecular mass of 18.2 kDa. The IL-18 is purified by proprietary chromatographic techniques.

Source

Escherichia Coli.

Formulation

Lyophilized from a 0.2µm filtered concentrated solution in PBS, pH 7.0.

Purity

Greater than 95.0% as determined by SDS-PAGE.

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Introduction
IL-18 is a proinflammatory cytokine. This cytokine can induce the IFN-gamma production of T cells. The combination of this cytokine and IL12 has been shown to inhibit IL4 dependent IgE and IgG1 production, and enhance IgG2a production of B cells. IL-18 binding protein (IL18BP) can specifically interact with this cytokine, and thus negatively regulate its biological activity.
Synonyms
IGIF, IL-1g, IL-18, IL1F4, MGC12320, IFN-gamma-inducing factor, Interleukin-1 gamma, IL-1 gamma, Iboctadekin.
Physical Appearance
Sterile Filtered White lyophilized (freeze-dried) powder.
Stability
Lyophilized Interleukin 18 although stable at room temperature for 3 weeks, should be stored desiccated below -18°C. Upon reconstitution IL18 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 Interleukin 18 in sterile PBS at 0.1mg/ml, which can then be further diluted to other aqueous solutions.
Amino Acid Sequence
YFGKLESKLS VIRNLNDQVL FIDQGNRPLF EDMTDSDCRD NAPRTIFIIS MYKDSQPRGM AVTISVKCEK ISTLSCENKI ISFKEMNPPD NIKDTKSDII FFQRSVPGHD NKMQFESSSY EGYFLACEKE RDLFKLILKK EDELGDRSIM FTVQNED
Background
Also known as IFN-gamma inducing factor, Interleukin-18 or IL18 is a protein. In humans this protein is encoded by the IL18 gene. The protein is a proinflammatory cytokine.
Mechanism
The levels of IL-18 in the human body are increased at sites of inflammation. This includes cases of rheumatoid arthritis as well as other similar conditions. Osteoblastic cells express the protein and it is capable of inhibiting osteoclast formation. It is able to do this through a variety of mechanisms.
For instance, it is able to stimulate GM-CSF. This is created by T cells and is a response to treatment using IL-18. As well as this, the cytokine does stimulate INF-y production through vivo in bone. Furthermore, the impact on bone resorption and osteoclastogenesis is increased when used in conjunction with IL-12 treatment. Studies have shown that IL-18 provides an indirect stimulus on osteoclastogenesis due to the effect it has on T lymphocytes.
Furthermore, evidence has shown that IL-18 does increase the production of OPG. This was studied in research on transgenic mice that overexpressed IL-18. In these cases osteoclasts decreased as did bone mass. This suggested that IL-18 also has an impact on bone growth.

Interactions
Research has also explored the different interactions of IL-18 on other proteins. This includes the interaction between IL-18 and IL-18R. This has been shown to decrease the power of protective immunity and increase pathogenic responses during an infection involving intracellular bacteria. This interaction suggests that the presence or absence of IL-18R signal does impact the pathogenic compared to protective immunity.
Another interaction between interleukin 19 and Astrocyte has shown that it can improve neuropathic pain processing following nerve injury. It is proposed this is due to the fact that the nociceptive signals in the spinal cord are augmented due to this reaction.

Function
Belonging to the IL-1 superfamily, this cytokine is produced by macrophages as well as various other cells. It operates after binding with the interleukin-18 receptor. Working with IL-12, the protein is then able to induce-cell mediated immunity after an infection from lipopolysaccharide and other microbial products.
Once stimulated by IL-18 other cells including natural killer and T cells then release IFN-y. This type II IFN plays a crucial part in activating the macrophages of various other cells.
Together IL12 and IL-18 are able to successfully inhibit IgE and IG1 production that is dependent on IL-4. As well as this, the protein is also able to increase IgG2a production through B cells. IL-18 will interact specifically with this type of cytokine and has a negative impact on regulation of biological activity.

Structure
Many researchers have suggested that the structure of IL-18 is a key way to understand it’s receptor activation mechanism. The structure of IL-18 closely resembles of IL-1 and has various similarities. It is folded into a beta-trefoil structure and three sites have been shown to be important for receptor activation. These were revealed through extensive mutagenesis. Two of the sites provide binding sites for the IL-18 receptor and are located in positions similar to IL-1. The third structure seems to be used for IL-18 receptor beta binding.

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.

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.

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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.

Description:

Leptin Ovine Recombinant

OB Protein, Obesity Protein, OBS, Obesity factor.

Product # :

CYT-239

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Description

Leptin Ovine 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 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.

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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 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-Val-Pro-Ile-Arg.
Protein content
Protein quantitation was carried out by two independent methods1. 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). 2. Analysis by RP-HPLC,using calibrated solution of Leptin Ovine 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.

Description:

Leptin Porcine Recombinant

OB Protein, Obesity Protein, OBS, Obesity factor.

Product # :

CYT-503

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Quantity :

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formulation
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Description

Leptin Porcine Recombinant produced in E.Coli is a single, non-glycosylated, polypeptide chain containing 146 amino acids and additional Ala at N-terminus, having a molecular mass of 16kDa. 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 recombinant porcine 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-Trp.
Protein content
Protein quantitation was carried out by two independent methods:1. UV spectroscopy at 280 nm using the absorbency value of 0.57 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 calibrated solution of Leptin Porcine 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.

Description:

Soluble CD23 Human Recombinant

Low affinity immunoglobulin epsilon Fc receptor, Lymphocyte IgE receptor, Fc-epsilon-RII, BLAST-2, Immunoglobulin E-binding factor, CD23 antigen, FCER2, CD23, FCE2, CD23A, IGEBF, CLEC4J.

Product # :

PRO-1789

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Description

sCD23 Human Recombinant produced in E.Coli is a single, non-glycosylated, polypeptide chain containing 172 amino acids and having a molecular mass of 19.2kDa.The sCD23 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:
(a) Analysis by RP-HPLC.
(b) Analysis by SDS-PAGE.

Biological Activity

The ED50 is determined by its ability to induce TNF-alpha production by human PBMCs.

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Introduction
CD23 is a 45kDa glycoprotein, which is present on a subpopulation of freshly isolated peripheral blood and tonsil B cells and strongly expressed on EBV-transformed B lymphoblasts. The CD23 molecule is identical to the low affinity IgE receptor found on B cells. Expression of CD23 has been detected in neoplastic cells from cases of B cell chronic lymphocyctic leukaemia and some cases of centroblastic/centrocytic lymphoma.
Synonyms
Low affinity immunoglobulin epsilon Fc receptor, Lymphocyte IgE receptor, Fc-epsilon-RII, BLAST-2, Immunoglobulin E-binding factor, CD23 antigen, FCER2, CD23, FCE2, CD23A, IGEBF, CLEC4J.
Physical Appearance
Sterile Filtered White lyophilized (freeze-dried) powder.
Stability
Lyophilized sCD23 although stable at room temperature for 3 weeks, should be stored desiccated below -18°C. Upon reconstitution sCD23 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 sCD23 in sterile 18M-cm H2O not less than 100µg/ml, which can then be further diluted to other aqueous solutions.
Amino Acid Sequence
MELQVSSGFV CNTCPEKWIN FQRKCYYFGK GTKQWVHARY ACDDMEGQLV SIHSPEEQDF LTKHASHTGS WIGLRNLDLK GEFIWVDGSH VDYSNWAPGE PTSRSQGEDC VMMRGSGRWN DAFCDRKLGA WVCDRLATCT PPASEGSAES MGPDSRPDPD GRLPTPSAPL HS

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.

Description:

Hepatitis B Surface Antigen, adw Recombinant

Product # :

HBS-872

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Description

HbsAg adw produced Pichia Pastoris, having a molecular weight of approximately 24.0 kDa as shown on SDS-PAGE.

Source

Pichia Pastoris.

Formulation

Sterile Filtered solution containing 20mM Phosphate Buffer, 154mM sodium chloride, pH 7.1.

Purity

Greater than 95.0% as determined by SDS-PAGE.

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Introduction
HBsAg is the surface antigenof the Hepatitis-B-Virus (HBV). The capsidof a virus has different surface proteins from the rest of the virus. The antigen is a protein that binds specifically on one of these surface proteins. It is commonly referred to as the Australian Antigen.
Physical Appearance
Sterile Filtered pale solution.
Stability
HBsAg Should be stored at 4°C.DO NOT FREEZE.

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.

Description:

Activin-B Human Recombinant, Active

Inhibin beta B (activin AB beta polypeptide), Inhibin, beta-2, Activin beta-B chain, MGC157939.

Product # :

CYT-057

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Description

Activin B human Recombinant produced in Nicotiana benthamiana plant is a beta-B single chain (aa 293-406) containing 123 amino acids (molecular formula C615H910N178O177S12). Activin B is fused to a 10-His-tag at the N-terminal having the total molecular mass of 14kDa and purified by standard chromatographic techniques.

Source

Nicotiana benthamiana plant

Formulation

Lyophilized from 1mg/ml solution in 0.05M Tris-HCl buffer pH 7.4.

Purity

Greater than 97.0% as determined by Analysis by SDS-PAGE.

Biological Activity

The biological activity of Activin B is measured by its ability to inhibit mouse plasmacytoma cell line (MPC-11) cells proliferation. EC50 <5ng/ml is required to stimulate a half-maximal response at cytokine saturation. Note: Since applications vary, each investigator should titrate the reagent to obtain optimal results.

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Synonyms
Inhibin beta B (activin AB beta polypeptide), Inhibin, beta-2, Activin beta-B chain, MGC157939.
Physical Appearance
Sterile Filtered White lyophilized (freeze-dried) powder.
Stability
Lyophilized Activin B although stable at room temperature for 3 weeks, should be stored desiccated below -18°C. Upon reconstitution Activin B 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 Activin B in sterile 18M-cm H2O not less than 100µg/ml, which can then be further diluted to other aqueous solutions.
Amino Acid Sequence
HHHHHHHHHH GLECDGRTNL CCRQQFFIDF RLIGWNDWII APTGYYGNYC EGSCPAYLAG VPGSASSFHT AVVNQYRMRG LNPGTVNSCC IPTKLSTMSM LYFDDEYNIV KRDVPNMIVE ECG.
Background
An Investigation into the Functional Roles and Therapeutic Potential of Activin-B Human Recombinant, Active
1. Abstract
Activin-B Human Recombinant, Active, also referred to as beta-2, Activin beta-B chain, or MGC157939, is a crucial component of the Transforming Growth Factor-beta (TGF-beta) superfamily. The multifaceted nature of this protein implicates it in numerous physiological processes. This paper delves into the bioactivity of Activin-B, exploring its role in cellular proliferation, differentiation, apoptosis, and its potential for therapeutic applications, especially in the realms of regenerative medicine, reproductive health, and cancer therapy.
2. Introduction
The TGF-beta superfamily, of which Activin-B is a member, is renowned for its far-reaching implications in cell and developmental biology. This superfamily boasts members that control cell growth, differentiation, and apoptosis, thus playing vital roles in organogenesis, bone growth, and reproductive functions. This research paper aims to shed light on the characteristics and potential therapeutic applications of Activin-B.
3. Structure and Synthesis of Activin-B
Activin-B is a dimeric protein, composed of two identical beta-B chains. This homodimer undergoes multiple stages of synthesis, starting as a precursor protein, which then experiences proteolytic processing to eventually form the mature peptide. It is this coordinated activity of various enzymes and molecular chaperones that ensure the accurate biosynthesis of Activin-B.
4. Biological Functions of Activin-B
Activin-B's roles extend from embryogenesis and organogenesis to the modulation of reproductive functions. Its influence over cellular proliferation, differentiation, and apoptosis has significant repercussions in physiological and pathological scenarios. Its regulatory functions also encompass immunomodulation and wound healing, underpinning its extensive biological reach.
5. Activin-B in Regenerative Medicine
Regenerative medicine's primary focus is the repair and regeneration of tissues, and it is here that the potential of Activin-B shines. The protein's capacity to regulate cellular processes positions it as a possible agent in tissue repair, making it an intriguing research topic for therapeutic applications in regenerative medicine.
6. Activin-B and Reproductive Health
Activin-B’s role in reproductive health is undeniable, having been implicated in follicular development, ovulation, and pregnancy maintenance. Its potent influence on reproductive functions indicates the possibility of its use in the treatment of reproductive disorders, providing a potential pathway for further therapeutic development.
7. Activin-B in Cancer
Recent research has connected the deregulation of Activin-B to various types of cancer. Deciphering the mechanisms through which Activin-B affects cancer cell proliferation and survival could open up new avenues for targeted cancer therapy. This critical linkage emphasizes the need for comprehensive studies on Activin-B's role in oncogenesis.
8. Conclusion and Future Perspectives
Our understanding of Activin-B's biological functions has grown immensely, but many mysteries remain. The continued exploration of the molecular mechanisms through which Activin-B operates will undoubtedly yield more insights into its potential therapeutic uses, guiding the development of new treatments for a myriad of diseases.
What is the molecular weight / Mw of Activin B Protein?
Activin A Protein has a total Mw of 14 kDa.
What is the source or expression system of Activin B Protein?
Nicotinia

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

What is the Biological Activity of Activin B Protein?
The biological activity of Activin B is measured by its ability to inhibit mouse plasmacytoma cell line (MPC-11) cells proliferation. EC50 <5ng/ml is required to stimulate a half-maximal response at cytokine saturation. Note: Since applications vary, each investigator should titrate the reagent to obtain optimal results.

What is the endotoxin level for Activin B Protein?
The endotoxin level is minimal, ACTIVIN B Protein was purified using conventional chromatography techniques.

What is the amino acid sequence of ACTIVIN B Protein?
HHHHHHHHHH GLECDGRTNL CCRQQFFIDF RLIGWNDWII APTGYYGNYC EGSCPAYLAG VPGSASSFHT AVVNQYRMRG LNPGTVNSCC IPTKLSTMSM LYFDDEYNIV KRDVPNMIVE ECG

What applications can ACTIVIN B Protein be used in?
ACTIVIN A Protein can probably be used in western blot, ELISA and Lateral Flow.

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.

Description:

Inhibitor of DNA Binding 1 Human Recombinant

bHLHb24, ID, DNA-binding protein inhibitor ID-1, Class B basic helix-loop-helix protein 24, Inhibitor of DNA binding 1, ID1.

Product # :

PRO-1426

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Description

ID1 Human Recombinant produced in E. coli is a single polypeptide chain containing 178 amino acids (1-155) and having a molecular mass of 18.5kDa. ID1 is fused to a 23 amino acid His-tag at N-terminus & purified by proprietary chromatographic techniques.

Source

E.coli.

Formulation

The ID1 solution (0.5mg/ml) contains 20mM Tris-HCl buffer (pH 8.0), 0.15M NaCl, 10% glycerol and 1mM DTT.

Purity

Greater than 85% as determined by SDS-PAGE.

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Introduction
Inhibitor of DNA Binding 1 (ID1) is a helix-loop-helix protein which can form heterodimers with members of the basic HLH family of transcription factors. ID1 is lacking DNA binding activity and thus can inhibit the DNA binding and transcriptional activation ability of basic HLH proteins with which it interacts. ID1 participates in cell growth, senescence, and differentiation.
Synonyms
bHLHb24, ID, DNA-binding protein inhibitor ID-1, Class B basic helix-loop-helix protein 24, Inhibitor of DNA binding 1, ID1.
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 MGSMKVASGS TATAAAGPSC ALKAGKTASG AGEVVRCLSE QSVAISRCAG GAGARLPALL DEQQVNVLLY DMNGCYSRLK ELVPTLPQNR KVSKVEILQH VIDYIRDLQL ELNSESEVGT PGGRGLPVRA PLSTLNGEIS ALTAEAACVP ADDRILCR.

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.

Description:

IFN-alpha 7 Human Recombinant

IFN alpha-7, IFN-alpha-7, IFN alpha-J, LeIF J, IFN alpha-J1, IFN-alpha-J1, IFNA7, IFNA-J, IFN-alphaJ.

Product # :

CYT-196

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SDS-PAGE

Description

IFNA7 Human Recombinant produced in E.Coli is a single, non-glycosylated polypeptide chain containing 191 amino acids (24-189 a.a) and having a molecular mass of 22.3kDa.IFNA7 is fused to a 25 amino acid His-tag at N-terminus & purified by proprietary chromatographic techniques.

Source

E.coli.

Formulation

IFNA7 protein solution (0.5mg/ml) containing 20mM Tris-HCl buffer (pH 8.0), 0.4M urea and 10% glycerol.

Purity

Greater than 90% as determined by SDS-PAGE.

SDS-PAGE

More Info

Introduction
IFN alpha 7 (IFNA7) is a member of the alpha/beta IFN family. IFNA7 is generated by macrophages. IFN-alpha has antiviral functions. IFN promotes the production of 2 enzymes: a protein kinase and an oligoadenylate synthetase.
Synonyms
IFN alpha-7, IFN-alpha-7, IFN alpha-J, LeIF J, IFN alpha-J1, IFN-alpha-J1, IFNA7, IFNA-J, IFN-alphaJ.
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 MGSHMCDLPQ THSLRNRRAL ILLAQMGRIS PFSCLKDRHE FRFPEEEFDG HQFQKTQAIS VLHEMIQQTF NLFSTEDSSA AWEQSLLEKF STELYQQLND LEACVIQEVG VEETPLMNED FILAVRKYFQ RITLYLMEKK YSPCAWEVVR AEIMRSFSFS TNLKKGLRRK D.
Background
What is the molecular weight/Mw of IFNA7 HUMAN Protein?
IFNA7 HUMAN Protein has a total Mw of 22.3kDa.

What is the source or expression system of IFNA7 HUMAN Protein?
Escherichia Coli.

What is the Purity of IFNA7 HUMAN Protein?
IFNA7 HUMAN Protein is >90% pure as determined by SDS-PAGE.

What is the Biological Activity of IFNA7 HUMAN Protein?
The biological functionality of IFNA7 HUMAN Protein will be determined in the future.

What is the amino acid sequence of IFNA7 HUMAN Protein?
MGSSHHHHHH SSGLVPRGSH MGSHMCDLPQ THSLRNRRAL ILLAQMGRIS PFSCLKDRHE FRFPEEEFDG HQFQKTQAIS VLHEMIQQTF NLFSTEDSSA AWEQSLLEKF STELYQQLND LEACVIQEVG VEETPLMNED FILAVRKYFQ RITLYLMEKK YSPCAWEVVR AEIMRSFSFS TNLKKGLRRK D.
What applications can IFNA7 HUMAN Protein be used in?
IFNA7 HUMAN Protein can probably be used in western blot, ELISA and Lateral Flow.

What is the endotoxin level for IFNA7 HUMAN Protein?
The endotoxin level is minimal, IFNA7 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.

Description:

Interleukin-10 Mouse Recombinant

B-TCGF, CSIF, TGIF, IL-10, IL10A, MGC126450, MGC126451, Cytokine synthesis inhibitory factor.

Product # :

CYT-497

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Shipped at Room temp

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Description

IL-10 Recombinant Mouse produced in E.coli is a single, non-glycosylated polypeptide chain containing 161 amino acids and having a molecular mass of 18785 Dalton. The Interleukin-10 Mouse is purified by proprietary chromatographic techniques.

Source

Escherichia Coli.

Formulation

The protein was lyophilized after extensive dialysis against PBS.

Purity

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

Biological Activity

The ED50 as determined by the dose-dependant co-stimulation with IL-4 of mouse MC-9 cells was found to be < 2ng/ml, corresponding to a Specific Activity of 500,000IU/mg.

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Introduction
IL10 is a cytokine produced primarily by monocytes and to a lesser extent by lymphocytes. This cytokine has pleiotropic effects in immunoregulation and inflammation. It down-regulates the expression of Th1 cytokines, MHC class II Ags, and costimulatory molecules on macrophages. It also enhances B cell survival, proliferation, and antibody production. This cytokine can block NF-kappa B activity, and is involved in the regulation of the JAK-STAT signaling pathway. Knockout studies in mice suggested the function of this cytokine as an essential immunoregulator in the intestinal tract.
Synonyms
B-TCGF, CSIF, TGIF, IL-10, IL10A, MGC126450, MGC126451, Cytokine synthesis inhibitory factor.
Physical Appearance
Sterile Filtered White lyophilized (freeze-dried) powder.
Stability
Lyophilized IL-10 Mouse although stable at room temperature for 3 weeks, should be stored desiccated below -18°C. Upon reconstitution Interleukin10 Mouse recombinant 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 IL-10 Mouse Recombinant 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 Met-Ser-Arg-Gly-Gln.

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.

Description:

Interleukin-13 Variant Human Recombinant

Interleukin-13, NC30, ALRH, BHR1, P600, IL-13, MGC116786, MGC116788, MGC116789.

Product # :

CYT-682

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Quantity :

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Shipped at Room temp

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Description

Interleukin-13 Variant Human Recombinant produced in E.Coli is a single, non-glycosylated polypeptide chain containing 114 amino acids, with a substitution of Q for R at position 112 compared with the wild type IL-13, having a molecular mass of 12.5 kDa. The IL-13 Variant is purified by proprietary chromatographic techniques.

Source

Escherichia Coli.

Formulation

Lyophilized from a 0.2µm filtered concentrated solution in 1xPBS, pH 7.2, containing 5% trehalose.

Purity

Greater than 95% as determined by(a) Analysis by RP-HPLC.
(b) Analysis by SDS-PAGE.

Biological Activity

The ED50 was determined by the dose dependent prolifiration of TF-1 cells and was found to be < 1ng/ml, corresponding to a specific activity of >1,000,000 units/mg. This analog has also been shown to exhibit increased in vivo activity compared to wild type IL-13.

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Introduction
IL13 is an immunoregulatory cytokine produced primarily by activated Th2 cells. IL-13 is involved in several stages of B-cell maturation and differentiation. It up-regulates CD23 and MHC class II expression, and promotes IgE isotype switching of B cells. This cytokine down-regulates macrophage activity, thereby inhibits the production of pro-inflammatory cytokines and chemokines. This cytokine is found to be critical to the pathogenesis of allergen-induced asthma but operates through mechanisms independent of IgE and eosinophils. This gene, IL3, IL5, IL4, and CSF2 form a cytokine gene cluster on chromosome 5q, with this gene particularly close to IL4.
Synonyms
Interleukin-13, NC30, ALRH, BHR1, P600, IL-13, MGC116786, MGC116788, MGC116789.
Physical Appearance
Sterile Filtered White lyophilized (freeze-dried) powder.
Stability
Lyophilized Interleukin-13 Variant although stable at room temperature for 3 weeks, should be stored desiccated below -18°C. Upon reconstitution IL13 Variant 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 Interleukin 13 Variant in sterile 18MΩ-cm H2O not less than 100µg/ml, which can then be further diluted to other aqueous solutions.
Amino Acid Sequence
SPGPVPPSTA LRELIEELVN ITQNQKAPLC NGSMVWSINL TAGMYCAALE SLINVSGCSA IEKTQRMLSG FCPHKVSAGQ FSSLHVRDTK IEVAQFVKDL LLHLKKLFRE GQFN.

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.

Description:

Resistin Rat Recombinant, His Tag

Cysteine-rich secreted protein FIZZ3, Adipose tissue-specific secretory factor, ADSF, C/EBP-epsilon-regulated myeloid-specific secreted cysteine-rich protein, Cysteine-rich secreted protein A12-alpha-like 2, RSTN, XCP1, RETN1, MGC126603, MGC126609.

Product # :

CYT-458

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Description

Resistin Rat Recombinant is manufactured with N-terminal fusion of His tag. Resistin Rat Recombinant His-Tagged Fusion Protein is an 11.9 kDa protein containing 94 amino acid residues of the Resistin Rat and 16 additional amino acid residues – His Tag (underlined).

Source

Escherichia Coli.

Formulation

Filtered (0.4µm) and lyophilized from 0.5mg/ml in 20mM Tris pH 8.0.

Purity

Greater than 95% as determined by SDS-PAGE.

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Introduction
Resistin, a product of the RSTN gene, is a peptide hormone belonging to the class of cysteine-rich secreted proteins (monomeric peptide contains 11 cysteine residues) referred to as the RELM family, and is also described as ADSF (Adipose Tissue-Specific Secretory Factor) or FIZZ3 (Found in Inflammatory Zone 3). Mouse resistin is expressed as a 114 amino acid prepeptide; its hydrofobic Nterminal 20 amino acid signal peptide is cleaved before its secretion. Mouse resistin circulates in blood as a homodimeric protein consisting of two 94 amino acid polypeptides, which are disulfide-linked via Cys26.
Resistin may be an important link between obesity. Mouse resistin, specifically produced and secreted by adipocyte, acts on skeletal muscle myocytes, hepatocytes and adipocytes themselves so that it reduces their sensitivity. Steppan et al. have suggested that resistin suppressed the ability to stimulate glucose uptake. They have also suggested that resistin was present at elevated levels in blood of obese mice, and was down regulated by fasting and by antidiabetic drugs. Way et al., on the other hand, have found that resistin expression is severely suppressed in obesity.
Other studies have shown that mouse resistin increases during the differentiation of adipocytes, but it also seems to inhibit adipogenesis. In contrast, the human adipogenic differentiation is likely to be associated with a down regulation of resistin gene expression.
Synonyms
Cysteine-rich secreted protein FIZZ3, Adipose tissue-specific secretory factor, ADSF, C/EBP-epsilon-regulated myeloid-specific secreted cysteine-rich protein, Cysteine-rich secreted protein A12-alpha-like 2, RSTN, XCP1, RETN1, MGC126603, MGC126609.
Physical Appearance
Filtered White lyophilized (freeze-dried) powder.
Stability
Store lyophilized protein 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.
Amino Acid Sequence
MRGSHHHHHH GMASHMPSMS LCPMDEAISK KINQDFSSLL PAAMKNTVLH CWSVSSRGRL ASCPEGTTVT SCSCGSGCGS WDVREDTMCH CQCGSIDWTA ARCCTLRVGS.

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.

Description:

Interleukin-9 Mouse Recombinant

P40, HP40, T-cell growth factor p40, IL-9, P40 cytokine.

Product # :

CYT-373

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Shipped at Room temp

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Description

Interleukin-9 Mouse Recombinant produced in E.Coli is a single, non-glycosylated single polypeptide chain containing 127 amino acids and having a molecular mass of 14.3kDa. The IL-9 is purified by proprietary chromatographic techniques.

Source

Escherichia Coli.

Formulation

Lyophilized from a concentrated (1mg/ml) solution 10mM Na2PO4, pH 7.5.

Purity

Greater than 96.0% as determined by SDS-PAGE.

Biological Activity

The ED50 as determined by the dose-dependant stimulation of human MO7e cells is < 0.5 ng/ml, corresponding to a Specific Activity of 2,000,000IU/mg.

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Introduction
Factor that is thought to be a regulator of hematopoiesis. It has been shown to enhance the growth of human mast cells and megakaryoblastic leukemic cells as well as murine helper t-cell clones. IL-9 is a glycoprotein with a molecular weight of 32-39 that is derived from T-cells, and maps to human chromosome 5.
Synonyms
P40, HP40, T-cell growth factor p40, IL-9, P40 cytokine.
Physical Appearance
Sterile Filtered White lyophilized (freeze-dried) powder.
Stability
Lyophilized Interleukin-9 although stable at room temperature for 3 weeks, should be stored desiccated below -18°C. Upon reconstitution IL9 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 Interleukin 9 in sterile 18MΩ-cm H2O not less than 100µg/ml, which can then be further diluted to other aqueous solutions.
Amino Acid Sequence
MQRCSTTWGI RDTNYLIENL KDDPPSKCSC SGNVTSCLCL SVPTDDCTTP CYREGLLQLT NATQKSRLLP VFHRVKRIVE VLKNITCPSF SCEKPCNQTM AGNTMSFLKS LLGTFQKTEM QRQKSRP.
Protein content
Protein quantitation was carried out by two independent methods:1. UV spectroscopy at 280 nm using the absorbency value of 0.6 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 standard solution of IL-9 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.

Description:

Interleukin 17A Human Recombinant, Sf9

Interleukin 17A, CTLA8, IL17, Interleukin 17 (Cytotoxic T-Lymphocyte-Associated Serine Esterase 8), Cytotoxic T-Lymphocyte-Associated Protein 8, Cytotoxic T-Lymphocyte-Associated Antigen 8, CTLA-8, IL-17A, IL-17, Interleukin-17A.

Product # :

CYT-895

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Shipped with Ice Packs

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Description

IL17A produced in Sf9 Baculovirus cells is a single, glycosylated polypeptide chain (24-155 a.a.) and fused to a 6 aa His Tag at C-terminus containing a total of 138 amino acids and having a molecular mass of 15.9kDa.IL17A shows multiple bands between 13.5-28kDa on SDS-PAGE, reducing conditions and purified by proprietary chromatographic techniques.

Source

Sf9, Baculovirus cells.

Formulation

IL17A protein solution (0.25mg/ml) contains Phosphate buffered saline (pH7.4), 20% glycerol, 1mM EDTA and 0.1mM PMSF.

Purity

Greater than 90.0% as determined by SDS-PAGE.

Biological Activity

The ED50 range ≤ 7 ng/ml. The activity is determined by the IL-6 ELISA in a using NIH/3T3 mouse embryonic fibroblast cells.

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Introduction
IL17 is a proinflammatory cytokine produced by activated T cells. IL-17 regulates the activities of NF-kappaB and mitogen-activated protein kinases. Interleukin-17 can stimulate the expression of IL6 and cyclooxygenase-2 (PTGS2/COX-2), as well as enhance the production of nitric oxide (NO). High levels of IL-17 are associated with several chronic inflammatory diseases including rheumatoid arthritis, psoriasis and multiple sclerosis.
Synonyms
Interleukin 17A, CTLA8, IL17, Interleukin 17 (Cytotoxic T-Lymphocyte-Associated Serine Esterase 8), Cytotoxic T-Lymphocyte-Associated Protein 8, Cytotoxic T-Lymphocyte-Associated Antigen 8, CTLA-8, IL-17A, IL-17, Interleukin-17A.
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
GITIPRNPGC PNSEDKNFPR TVMVNLNIHN RNTNTNPKRS SDYYNRSTSP WNLHRNEDPE RYPSVIWEAK CRHLGCINAD GNVDYHMNSV PIQQEILVLR REPPHCPNSF RLEKILVSVG CTCVTPIVHH VAHHHHHH

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.

Description:

Granulocyte-Colony Stimulating Factor Human Recombinant, CHO

CSF-3, MGI-1G, GM-CSF beta, Pluripoietin, Filgrastim, Lenograstim, G-CSF, MGC45931, GCSF.

Product # :

CYT-329

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Shipped at Room temp

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Description

Granulocyte Colony Stimulating Factor Human Recombinant produced in CHO cells is a single, glycosylated, polypeptide chain containing 174 amino acids and having a molecular mass of approximately 18 kDa.G-CSF is purified by proprietary chromatographic techniques.

Source

Chinese Hamster Ovary Cells (CHO).

Formulation

G-CSF was lyophilized from a concentrated (1mg/ml) solution containing 10mM Hydrochloric Acid pH=6.5, 0.4mg tween 20, 100mg mannitol, 160mg L-arginine, 40mg phenylalanine and 4mg methionine.

Purity

Greater than 97.0% as determined by SDS-PAGE.

Biological Activity

The ED₅₀, calculated by the dose-dependant proliferation of murine NFS-60 indicator cells (measured by ³H-thymidine uptake) is < 0.07 ng/ml, corresponding to a Specific Activity of 1.27 x 10⁸IU/mg.

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Introduction
Granulocyte Colony Stimulating Factor is a growth factor and/or cytokine produced by the endothelium, macrophages and a number of other immune cells. GCSF stimulates the bone marrow to produce granulocytes and also to stimulate the survival, proliferation, differentiation and function of neutrophil granulocyte progenator cells and mature neutrophils.
Synonyms
CSF-3, MGI-1G, GM-CSF beta, Pluripoietin, Filgrastim, Lenograstim, G-CSF, MGC45931, GCSF.
Physical Appearance
Sterile Filtered White lyophilized (freeze-dried) powder.
Stability
Lyophilized Granulocyte Colony Stimulating Factor although stable at room temperature for 3 weeks, should be stored desiccated below -18°C. Upon reconstitution G-CSF 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 Granulocyte Colony Stimulating Factor in sterile 18MΩ-cm H2O not less than 100µg/ml, which can then be further diluted to other aqueous solutions.
Amino Acid Sequence
TPLGPASSLP QSFLLKCLEQ VRKIQGDGAA LQEKLCATYK LCHPEELVLL GHSLGIPWAP LSSCPSQALQ LAGCLSQLHS GLFLYQGLLQ ALEGISPELG PTLDTLQLDV ADFATTIWQQ MEELGMAPAL QPTQGAMPAF ASAFQRRAGG VLVASHLQSF LEVSYRVLRH LAQP.
Background
What is the molecular weight/Mw of G CSF Protein?
G CSF Protein has a total Mw of 18kDa.

What is the source or expression system of G CSF Protein?
Chinese Hamster Ovary Cells (CHO).

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

What is the Biological Activity of G CSF Protein?
The ED50, calculated by the dose-dependant proliferation of murine NFS-60 indicator cells (measured by 3H-thymidine uptake) is < 0.07 ng/ml, corresponding to a Specific Activity of 1.27 x 108 IU/mg.

What is the amino acid sequence of G CSF Protein?
TPLGPASSLP QSFLLKCLEQ VRKIQGDGAA LQEKLCATYK LCHPEELVLL GHSLGIPWAP LSSCPSQALQ LAGCLSQLHS GLFLYQGLLQ ALEGISPELG PTLDTLQLDV ADFATTIWQQ MEELGMAPAL QPTQGAMPAF ASAFQRRAGG VLVASHLQSF LEVSYRVLRH LAQP.

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

What is the endotoxin level for G CSF Protein?
The endotoxin level is minimal, G CSF 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.

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