Search: 1000 results found for "natural coagulation factors"

Description:

Transforming Growth Factor-beta 1 Human

Transforming growth factor beta-1, TGF-beta-1, CED, DPD1, TGFB, TGF-b 1.

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CYT-561

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Description

Human Transforming Growth Factor-beta 1 purified from Human Platelets having a molecular mass of 25kDa.The TGF-b 1 is purified by proprietary chromatographic techniques.

Source

Human Platelets.

Formulation

TGF-Beta1 protein was lyophilized from a solution containing 30% acetonitrile and 0.1% trifluoroacetic acid.

Purity

Greater than 98.0% as determined by SDS-PAGE.

Biological Activity

Stimulates the growth of NRK-1 cells in soft agar at concentrations ranging from 0.1 to 5ng/ml corresponding to a specific activity of 200,000-10,000,000IU/mg. Effective concentration ranges must be experimentally determined. Purified EGF and/or TGF- must be present for observation of the biological activity.

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Introduction
Transforming growth factor betas (TGF Betas) mediate many cell-cell interactions that occur during embryonic development. Three TGFBetas have been identified in mammals. TGFBeta1, TGFBeta2 and TGFBeta3 are each synthesized as precursor proteins that are very similar in that each is cleaved to yield a 112 amino acid polypeptide that remains associated with the latent portion of the molecule.
Synonyms
Transforming growth factor beta-1, TGF-beta-1, CED, DPD1, TGFB, TGF-b 1.
Physical Appearance
Sterile Filtered lyophilized powder.
Stability
Lyophilized TGF-beta 1 although stable at room temperature for 3 weeks, should be stored desiccated below -18°C. Upon reconstitution TGF-beta 1 should be stored at 4°C between 2-7 days and for future use below -18°C.DO NOT RECONSTITE WITH NEUTRAL BUFFERS.DO NOT USE GLASS IMPLEMENTS OR EXTENSIVE MANIPULATIONS.PREVENT FREEZE THAW CYCLES.
Solubility
It is recommended to reconstitute lyophilized TGF-beta 1 in 0.5% BSA in 0.1N acetic acid, which can then be further diluted to the desired aliquot with 30% acetonitrile and 0.1% trifluoroacetic acid.
Background
Title: Transforming Growth Factor-Beta 1 Human: An Insight into its Role in Cellular Regulation
Abstract:

Transforming Growth Factor-Beta 1 (TGF-β1) is a multifunctional cytokine that plays a critical role in various cellular processes, including cell growth, differentiation, apoptosis, and immune regulation. This research paper aims to provide a comprehensive overview of the structure, synthesis, signaling pathways, and biological functions of TGF-β1 in human cells. Additionally, this article highlights the relevance of TGF-β1 in various physiological and pathological conditions, including cancer, fibrosis, and immune disorders. Furthermore, potential therapeutic strategies targeting TGF-β1 signaling are also discussed. The information presented in this paper consolidates the current understanding of TGF-β1 and its significance in cellular regulation.
Introduction:

Transforming Growth Factor-Beta 1 (TGF-β1) belongs to a superfamily of growth factors that regulate various cellular processes. It is synthesized as a precursor protein and undergoes proteolytic cleavage to generate the biologically active form. TGF-β1 exerts its effects by binding to specific cell surface receptors, leading to the activation of downstream signaling cascades. These signaling pathways involve Smad-dependent and Smad-independent mechanisms, which ultimately regulate gene expression and cellular responses.
Biological Functions:

TGF-β1 regulates cell proliferation by exerting both stimulatory and inhibitory effects, depending on the cellular context. It plays a crucial role in tissue development, wound healing, and tissue repair by promoting extracellular matrix synthesis and modulating the immune response. TGF-β1 also has immunomodulatory functions, influencing the differentiation and function of immune cells. However, dysregulation of TGF-β1 signaling is associated with various pathologies, including cancer progression, fibrosis, and autoimmune disorders.
Role in Cancer:

TGF-β1 acts as a tumor suppressor in early stages of cancer by inhibiting cell proliferation and inducing apoptosis. However, in advanced stages, it promotes tumor progression by enhancing tumor cell migration, invasion, and angiogenesis. The dual role of TGF-β1 in cancer highlights its complex involvement in tumorigenesis.
Therapeutic Implications:

Given the significant role of TGF-β1 in various diseases, targeting its signaling pathways has emerged as a potential therapeutic strategy. Several approaches, including small molecule inhibitors, antibodies, and gene therapies, are being explored to modulate TGF-β1 activity in a controlled manner. These interventions hold promise in the treatment of cancer, fibrosis, and other TGF-β1-related disorders.
Conclusion:

Transforming Growth Factor-Beta 1 is a versatile cytokine with diverse functions in cellular regulation. Its role in physiological processes and disease pathogenesis underscores its importance as a therapeutic target. Further investigations into the precise mechanisms and downstream effects of TGF-β1 signaling will contribute to the development of novel therapies for various human disorders.

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:

BAFF (BLyS) Human Recombinant, Plant

BAFF, BLYS, CD257, TALL1, THANK, ZTNF4, TALL-1, TNFSF20, TNFSF13B, B-cell Activating Factor.

Product # :

CYT-054

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Description

BAFF human Recombinant produced in Nicotiana benthamiana plant is a single glycosilated polypeptide chain containing 151 amino acids fragment (134-285).BAFF (C830H1277N223O242S5) is fused to a 10-His-tag at the N-terminal having the total molecular mass of 18-20kDa and purified by standard chromatographic techniques.

Source

Nicotiana benthamiana plant

Formulation

Lyophilized from 1mg/ml solution in 20 mM PBS buffer pH 7 and 0.2 M NaCl.

Purity

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

Biological Activity

The activity is determined by dose-dependent stimulation of proliferation B cell from Human PBMC. Cell proliferation was measured by MTT method.
*activity results may vary with PBMC donors.
ED50 ? 50ng/ml

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Introduction
BAFF binds to tnfrsf13b/taci and tnfrsf17/bcma. Tnfsf13/april binds to the same 2 receptors, together, they form a 2 ligands -2 receptors pathway involved in the stimulation of b- and t-cell function and the regulation of humoral immunity.A third b-cell specific baff-receptor (baffr/br3) promotes the survival of mature b-cells and the b-cell response.
B Lymphocyte Stimulator functions as a potent B-cell growth factor in costimulation assays.
Administration of BAFF Human recombinant to mice disrupts splenic B-cell and T-cell zones and results in elevated levels of serum immunoglobulin.
Synonyms
BAFF, BLYS, CD257, TALL1, THANK, ZTNF4, TALL-1, TNFSF20, TNFSF13B, B-cell Activating Factor.
Physical Appearance
Sterile Filtered White lyophilized (freeze-dried) powder.
Stability
Lyophilized BAFF although stable at room temperature for 3 weeks, should be stored desiccated below -18°C. Upon reconstitution BAFF 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 BAFF in sterile 18M-cm H2O not less than 100µg/ml, which can then be further diluted to other aqueous solutions.
Amino Acid Sequence
HHHHHHHHHH AVQGPEETVT QDCLQLIADS ETPTIQKGSY TFVPWLLSFK RGSALEEKEN KILVKETGYF FIYGQVLYTD KTYAMGHLIQ RKKVHVFGDE LSLVTLFRCI QNMPETLPNN SCYSAGIAKL EEGDELQLAI PRENAQISLD GDVTFFGALK LL
Background
What is the molecular weight/Mw of BLYS Protein?
BLYS Protein has a total Mw of 19kDa.

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

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

What is the Biological Activity of BLYS Protein?
The activity is determined by dose-dependent stimulation of proliferation B cell from Human PBMC. Cell proliferation was measured by MTT method.

What is the amino acid sequence of BLYS Protein?
HHHHHHHHHH AVQGPEETVT QDCLQLIADS ETPTIQKGSY TFVPWLLSFK RGSALEEKEN KILVKETGYF FIYGQVLYTD KTYAMGHLIQ RKKVHVFGDE LSLVTLFRCI QNMPETLPNN SCYSAGIAKL EEGDELQLAI PRENAQISLD GDVTFFGALK LL

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

What is the endotoxin level for BLYS Protein?
The endotoxin level is minimal, BLYS 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:

Runt-Related Transcription Factor 3 Human Recombinant

AML2, CBFA3, PEBP2aC, PEBP2A3, FLJ34510, MGC16070, RUNX3, Oncogene AML-2, Runt-related transcription factor 3, Core-binding factor subunit alpha-3, Acute myeloid leukemia 2 protein, Polyomavirus enhancer-binding protein 2 alpha C subunit, SL3-3 enhancer factor 1 alpha C subunit, SL3/AKV core-binding factor alpha C subunit.

Product # :

PRO-836

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Description

RUNX3 Recombinant Human produced in E.Coli is a single, non-glycosylated polypeptide chain containing 155 amino acids (53-186 a.a.) and having a molecular mass of 17.1 kDa. The RUNX3 is fused to 21 amino acid His-Tag at N-terminus and purified by proprietary chromatographic techniques.

Source

Escherichia Coli.

Formulation

RUNX3 Human solution (0.5mg/ml) containing 20mM Tris-HCl buffer (pH8.0), 20% glycerol, 0.1M NaCl and 1mM DTT.

Purity

Greater than 95.0% as determined by SDS-PAGE.

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Introduction
RUNX3 is part of the RUNX family that mediates the expression of genes which participate in cellular differentiation and cell cycle progression. RUNX3 heterodimer and the beta subunit form a complex that binds to the core DNA sequence 5''-PYGPYGGT-3'' found in several enhancers and promoters, and can either activate or suppress transcription. RUNX3 interacts with additional transcription factors. RUNX3 is a good candidate for gastric cancer tumor suppressor diagnosis.
Synonyms
AML2, CBFA3, PEBP2aC, PEBP2A3, FLJ34510, MGC16070, RUNX3, Oncogene AML-2, Runt-related transcription factor 3, Core-binding factor subunit alpha-3, Acute myeloid leukemia 2 protein, Polyomavirus enhancer-binding protein 2 alpha C subunit, SL3-3 enhancer factor 1 alpha C subunit, SL3/AKV core-binding factor alpha C subunit.
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 MRSMVDVLAD HAGELVRTDS PNFLCSVLPS HWRCNKTLPV AFKVVALGDV PDGTVVTVMA GNDENYSAEL RNASAVMKNQ VARFNDLRFV GRSGRGKSFT LTITVFTNPT QVATYHRAIK VTVDGPREPR RHRQK.

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:

Epidermal Growth Factor Long Human Recombinant

Urogastrone, URG, EGF.

Product # :

CYT-798

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Description

Recombinant Human EGF Long produced in E.coli cells is a single non-glycosylated, polypeptide chain containing 106 amino acids and having a molecular mass of 12.3kDa. The EGF Long is purified by proprietary chromatographic techniques.

Source

Escherichia Coli.

Formulation

The EGF Long was lyophilized from a 0.2µm filtered concentrated solution in 10mM HCl.

Purity

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

Biological Activity

The ED50 as determined by a cell proliferation assay using murine Balb/c 3T3 cells is less than 1.0 ng/ml, corresponding to a specific activity of > 1.0 × 10⁶ IU/mg.

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Introduction
Epidermal growth factor has a profound effect on the differentiation of specific cells in vivo and is a potent mitogenic factor for a variety of cultured cells of both ectodermal and mesodermal origin. The EGF precursor is believed to exist as a membrane-bound molecule which is proteolytically cleaved to generate the 53-amino acid peptide hormone that stimulates cells to divide. EGF stimulates the growth of various epidermal and epithelial tissues in vivo and in vitro and of some fibroblasts in cell culture. Long EGF is a recombinant analog of Human EGF developed as a replacement for use in therapeutic cell culture applications as a like-for-like supplement for Recombinant Human or native EGF. It includes the Human EGF amino acid sequence plus a 53 amino acid N-terminal extension peptide.
Synonyms
Urogastrone, URG, EGF.
Physical Appearance
Sterile Filtered White lyophilized (freeze-dried) powder.
Stability
Lyophilized EGF Long although stable at room temperature for 3 weeks, should be stored desiccated below -18°C. Upon reconstitution EGF Long 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 EGF Long in sterile 100mM AcOH (acetic Acid) not less than 100µg/ml, which can then be further diluted to other aqueous solutions.
Amino Acid Sequence
MFPAMPLSSL FANAVLRAQH LHQLAADTYK EFERAYIPEG QRYSIQVNFA HYGNSDSECP LSHDGYCLHD GVCMYIEALD KYACNCVVGY IGERCQYRDL KWWELR
Background
What is the molecular weight/Mw of EGF Protein?
EGF Protein has a total Mw of 12.3kDa.

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

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

What is the Biological Activity of EGF Protein?
The ED50 as determined by a cell proliferation assay using murine Balb/c 3T3 cells is less than 1.0 ng/ml, corresponding to a specific activity of > 1.0 × 106 IU/mg.

What is the amino acid sequence of EGF Protein?
MFPAMPLSSL FANAVLRAQH LHQLAADTYK EFERAYIPEG QRYSIQVNFA HYGNSDSECP LSHDGYCLHD GVCMYIEALD KYACNCVVGY IGERCQYRDL KWWELR

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

What is the endotoxin level for EGF Protein?
The endotoxin level is minimal, EGF 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:

Eukaryotic Translation Initiation Factor 5A2 Human Recombinant

eIF-5A-2, EIF-5A2, eIF5AII, Eukaryotic translation initiation factor 5A-2, Eukaryotic initiation factor 5A isoform 2, EIF5A2.

Product # :

PRO-846

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Description

EIF5A2 Recombinant E.coli produced in E.Coli is a single, non-glycosylated polypeptide chain containing 173 amino acids (1-153 a.a.) and having a molecular mass of 18.9 kDa. The EIF5A2 is fused to a 20 amino acid His-Tag at N-terminus and purified by proprietary chromatographic techniques.

Source

Escherichia Coli.

Formulation

EIF5A2 Human solution containing 20mM Tris-HCl pH-8 & 10% glycerol.

Purity

Greater than 85.0% as determined by SDS-PAGE.

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Introduction
EIF5A2 is part of the eukaryotic initiation factor 5A subfamily, is an vital protein strongly linked to cellular polyamine homeostasis. EIF5A2 promotes the formation of the first peptide bond during the initial stage of protein synthesis. EIF5A2 is the single eukaryotic protein to have a hypusine residue, which is a post-translational modification of a lysine by the addition of a butylamino group.
Synonyms
eIF-5A-2, EIF-5A2, eIF5AII, Eukaryotic translation initiation factor 5A-2, Eukaryotic initiation factor 5A isoform 2, EIF5A2.
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 MADEIDFTTG DAGASSTYPM QCSALRKNGF VVLKGRPCKI VEMSTSKTGK HGHAKVHLVG IDIFTGKKYE DICPSTHNMD VPNIKRNDYQ LICIQDGYLS LLTETGEVRE DLKLPEGELG KEIEGKYNAG EDVQVSVMCA MSEEYAVAIK PCK.

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:

Fibroblast Growth Factor-23 Human Recombinant

Tumor-derived hypophosphatemia-inducing factor, HYPF, ADHR, HPDR2, PHPTC, FGF23, FGF-23, Fibroblast Growth Factor-23.

Product # :

CYT-020

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Description

Fibroblast Growth Factor-23 Human Recombinant produced in E.Coli is a single, non-glycosylated polypeptide chain containing a total of 228 amino acids and having a molecular mass of 22.5kDa. The FGF-23 is and purified by chromatographic techniques.

Source

Escherichia Coli.

Formulation

The FGF-23 protein (0.5mg/ml) was lyophilized from a 0.2µm filtered concentrated solution in PBS, pH 7.4.

Purity

Greater than 95.0% as determined by SDS-PAGE.

Biological Activity

The biological activity of FGF-23 was measured in a cell proliferation assay using NIH/3T3 mouse embryonic fibroblasts. The ED50 for this effect is typically 0.05-0.5µg/ml in the presence of 5µg/ml of Recombinant Mouse Klotho and 10 µg/ml of HPR.

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Introduction
FGF-23 is a member of the fibroblast growth factor (FGF) family. FGF family members possess broad mitogenic and cell survival activities and are involved in a variety of biological processes including embryonic development, cell growth, morphogenesis, tissue repair, tumor growth and invasion. FGF-23 inhibits renal tubular phosphate transport. The FGF-23 gene was identified by its mutations associated with autosomal dominant hypophosphatemic rickets (ADHR), an inherited phosphate wasting disorder. Abnormally high level expression of FGF-23 was found in oncogenic hypophosphatemic osteomalacia (OHO), a phenotypically similar disease caused by abnormal phosphate metabolism. FGF-23 mutations have also been shown to cause familial tumoral calcinosis with hyperphosphatemia.
Synonyms
Tumor-derived hypophosphatemia-inducing factor, HYPF, ADHR, HPDR2, PHPTC, FGF23, FGF-23, Fibroblast Growth Factor-23.
Physical Appearance
Sterile Filtered white lyophilized powder.
Stability
Lyophilized FGF-23 although stable at room temperature for 3 weeks, should be stored desiccated below -18°C. Upon reconstitution FGF-23 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 FGF-23 in sterile 18M-cm H2O not less than 100µg/ml, which can then be further diluted to other aqueous solutions.
Amino Acid Sequence
MYPNASPLLG SSWGGLIHLY TATARNSYHL QIHKNGHVDG APHQTIYSAL MIRSEDAGFV VITGVMSRRY LCMDFRGNIF GSHYFDPENC RFQHQTLENG YDVYHSPQYH FLVSLGRAKR AFLPGMNPPP YSQFLSRRNE IPLIHFNTPI PRRHTRSAED DSERDPLNVL KPRARMTPAP ASCSQELPSA EDNSPMASDP LGVVRGGRVN THAGGTGPEG CRPFAKFI.
Background
Before it was discovered in 2000, there was a hypothesis that a similar type of protein existed that performed many of the functions we see in FGF23. This was originally referred to as phosphatonin. Various effects were described and noted by researchers including inhibition of production and inhibition of secretion of parathyroid hormone. Derived from the bone Fibroblast Growth Factor 23 is a phosphaturic hormone. It increases phosphate excretion when acting on the kidney and also suppresses the biosynthesis of 1,25(OH)2D3.
Mechanism
Despite various research studies into the topic, many of the mechanisms for the regulations of FGF23 production remain a mystery to the scientific community. While we know that mutations in PHEX, ENPP1 and DMP1 result in the increased expression of FGF23, it is unclear why this occurs. This also means that currently, it is not possible to regulate the production of FGF23 either. We also do not know how signals from FGF23 regulate vitamin D metabolism. However, understanding these types of mechanisms could offer information needed to provide better treatment for deranged bone and mineral metabolism.
Interactions
Molecular interactions involving FGF-23, vitamin D and klotho do provide the solution needed to regulate phosphate levels within the body. Furthermore, an interaction between Vitamin D and FGF3 can have an impact on renal phosphate balance. As well as this, when in the presence of klotho, FGF3 does actually increase bioactivity and begins to change systemic phosphate homeostasis.
Function
Based on research it seems that the main function for FGF23 is the regulation of phosphate concentration in plasma. It seems to be secreted from the osteocytes due to elevated levels . When acting upon the kidneys, the hormone reduces the expression of NPT2. This is a sodium-phosphate cotransporter found in the proximal tube.
As such, it appears as though FGF23 is able to reduce the reabsorption, all the while maxing the excretion of phosphate. It has also been suggested that the hormone is able to suppress 1-alpha-hydroxylase. If this is the case, it can limit its potential to activate vitamin D and thus impair the ability for calcium absorption.
Structure
FGF243 is located on the chromosome 12. It is composed of three exons. The crystal structure of FGF23 is completely different from the common conformation typically adopted by paracrine-acting FGFs. Instead, there is a conformation of the HPR region between beta strands 10 and 12. As well as this, there is a cleft between the other HPR-binding region, the beta1-beta12 loop and this one. This comes before a direct interaction between HPR sulfate and FGF23s backbone atoms. Due to this, endocrine function is benefitted and HPR-binding affinity is reduced for the lipangs.
Certain mutations that cause the protein to be completely resistant to proteolytic cleavage does trigger a surge in activity of the protein and the renal phosphate loss typically found in certain human diseases including hypophosphatemic rickets.
Studies have also revealed that FGF23 is overproduced in certain tumors including phosphaturic mesenchymal tumors. Furthermore a reduced level of activity for this protein is believed to lead to higher phosphate levels and familial tumor calcinosis clinical syndrome.
What is the molecular weight/Mw of FGF23 HUMAN Protein?
FGF23 HUMAN Protein has a total Mw of 22.5kDa.

What is the source or expression system of FGF23 HUMAN Protein?
Escherichia Coli.

What is the Purity of FGF23 HUMAN Protein?
FGF23 HUMAN Protein is >95X% pure as determined by SDS-PAGE.

What is the Biological Activity of FGF23 HUMAN Protein?
The biological activity of FGF-23 was measured in a cell proliferation assay using NIH/3T3 mouse embryonic fibroblasts. The ED50 for this effect is typically 0.05-0.5µg/ml in the presence of 5µg/ml of Recombinant Mouse Klotho and 10 µg/ml of HPR.

What is the amino acid sequence of FGF23 HUMAN Protein?
MYPNASPLLG SSWGGLIHLY TATARNSYHL QIHKNGHVDG APHQTIYSAL MIRSEDAGFV VITGVMSRRY LCMDFRGNIF GSHYFDPENC RFQHQTLENG YDVYHSPQYH FLVSLGRAKR AFLPGMNPPP YSQFLSRRNE IPLIHFNTPI PRRHTRSAED DSERDPLNVL KPRARMTPAP ASCSQELPSA EDNSPMASDP LGVVRGGRVN THAGGTGPEG CRPFAKFI.

What applications can FGF23 HUMAN Protein be used in?
FGF23 HUMAN Protein can probably be used in western blot, ELISA and Lateral Flow.

What is the endotoxin level for FGF23 HUMAN Protein?
The endotoxin level is minimal, FGF23 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:

CREB/ATF BZIP Transcription Factor Human Recombinant

CREB/ATF BZIP Transcription Factor, Host Cell Factor-Binding Transcription Factor Zhangfei, HCF-Binding Transcription Factor Zhangfei, Zhangfei, ZF, SHP-Interacting Leucine Zipper Protein, SMILE, CREB/ATF bZIP transcription factor.

Product # :

PRO-2081

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Description

CREBZF Human Recombinant produced in E.Coli is a single, non-glycosylated polypeptide chain containing 377 amino acids (1-354 a.a) and having a molecular mass of 39.5kDa. CREBZF is fused to a 23 amino acid His-tag at N-terminus & purified by proprietary chromatographic techniques.

Source

Escherichia Coli.

Formulation

CREBZF protein solution (0.25mg/ml) containing PBS buffer (pH 7.4), 20% glycerol, 1mM DTT and 0.1mM PMSF.

Purity

Greater than 85% as determined by SDS-PAGE.

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Introduction
CREB/ATF BZIP Transcription Factor, also known as CREBZF activates transcription strongly once bound to HCFC1. CREBZF suppresses the expression of HSV proteins in cells infected with the virus in a HCFC1-dependent manner. CREBZF suppresses the HCFC1-dependent transcriptional activation through CREB3 and reduces the quantity of CREB3 in the cell. In addition, CREBZF is capable to down-regulate expression of a few cellular genes in CREBZF-expressing cells.
Synonyms
CREB/ATF BZIP Transcription Factor, Host Cell Factor-Binding Transcription Factor Zhangfei, HCF-Binding Transcription Factor Zhangfei, Zhangfei, ZF, SHP-Interacting Leucine Zipper Protein, SMILE, CREB/ATF bZIP transcription factor.
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 MGSMRHSLTK LLAASGSNSP TRSESPEPAA TCSLPSDLTR AAAGEEETAA AGSPGRKQQF GDEGELEAGR GSRGGVAVRA PSPEEMEEEA IASLPGEETE DMDFLSGLEL ADLLDPRQPD WHLDPGLSSP GPLSSSGGGS DSGGLWRGDD DDEAAAAEMQ RFSDLLQRLL NGIGGCSSSS DSGSAEKRRR KSPGGGGGGG SGNDNNQAAT KSPRKAAAAA ARLNRLKKKE YVMGLESRVR GLAAENQELR AENRELGKRV QALQEESRYL RAVLANETGL ARLLSRLSGV GLRLTTSLFR DSPAGDHDYA LPVGKQKQDL LEEDDSAGGV CLHVDKDKVS VEFCSACARK ASSSLKM.

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:

HVEM Human Recombinant, His Tag

Tumor Necrosis Factor Receptor Superfamily Member 14, HVEM, TR2, Herpes Virus Entry Mediator A, Tumor Necrosis Factor Receptor-Like 2, Herpesvirus Entry Mediator, HVEA, ATAR, CD270, LIGHTR, CD40-Like Protein, Tumor Necrosis Factor Receptor-Like Gene2.

Product # :

CYT-800

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Description

TNFRSF14 Human Recombinant produced in E. Coli is a single, glycosylated polypeptide chain containing 187 amino acids (39-202) and having a molecular mass of 19.7kDa.TNFRSF14 is fused to a 23 amino acid His-tag at N-terminus & purified by proprietary chromatographic techniques.

Source

E.coli.

Formulation

The TNFRSF14 solution (0.5mg/ml) containing 20mM Tris-HCl (pH 8.0), 0.1M NaCl and 10% glycerol.

Purity

Greater than 85% as determined by SDS-PAGE.

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Introduction
TNFRSF14, a member of the TNF receptor superfamily, is a type I transmembrane protein. TNFRSF14 is expressed in peripheral blood T cells, B cells, monocytes and in various tissues enriched in lymphoid cells. TNFRSF14 operates as a co-stimulatory factor for the activation of lymphoid cells and as a deterrent to infection by herpesvirus. Additionally, TNFRSF14 encourages the proliferation of T cells, and triggers apoptosis of various tumor cells.
Synonyms
Tumor Necrosis Factor Receptor Superfamily Member 14, HVEM, TR2, Herpes Virus Entry Mediator A, Tumor Necrosis Factor Receptor-Like 2, Herpesvirus Entry Mediator, HVEA, ATAR, CD270, LIGHTR, CD40-Like Protein, Tumor Necrosis Factor Receptor-Like Gene2.
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 MGSLPSCKED EYPVGSECCP KCSPGYRVKE ACGELTGTVC EPCPPGTYIA HLNGLSKCLQ CQMCDPAMGL RASRNCSRTE NAVCGCSPGH FCIVQDGDHC AACRAYATSS PGQRVQKGGT ESQDTLCQNC PPGTFSPNGT LEECQHQTKC SWLVTKAGAG TSSSHWV.

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:

Epidermal Growth Factor Receptor Human Recombinant Sf9, Active

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

Product # :

PKA-335

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Description

EGFR Human Recombinant encoding a.a. 672-1210 expressed in Baculovirus infected Sf9 cells, fused with a GST-tag at N-terminus with thrombin cleavage sites, having a molecular weight of 89,171 Dalton.EGFR is purified by proprietary chromatographic techniques.

Source

Baculovirus infected Sf9 cells.

Formulation

EGFR in 50mM HEPES pH 7.5, 100mM NaCl, 5mM DTT, 15mM reduced glutathione and 20% glycerol.

Biological Activity

Determination of Km value by Filter binding assay MAFC membrane.

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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, heparin-binding EGF 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 liquid.
Stability
Store vial at -20°C to -80°C. When stored at the recommended temperature, this protein is stable for 12 months. Please avoid freeze-thaw cycles.
Specific Activity
30 pmol/µgxmin.

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:

Kruppel-Like Factor 7 (80-230) Human Recombinant

UKLF, Krueppel-like factor 7, Ubiquitous krueppel-like factor, KLF7.

Product # :

PRO-2824

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Quantity :

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Description

The KLF7 Human is created as a recombinant protein with a 4kda N-terminal fusion of His Tag. The KLF7 His-Tagged Fusion Protein, produced in E. coli, is a 22kDa protein containing 126 amino acid residues of the KLF7 Human, 80-230 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
UKLF, Krueppel-like factor 7, Ubiquitous krueppel-like factor, KLF7.
Physical Appearance
Filtered White lyophilized (freeze-dried) powder.
Stability
Store lyophilized KLF7 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
Kruppel-Like Factor 7 (KLF7) which is a part of the KLF family, plays an important roles in many biological processes, including cellular proliferation, differentiation and apoptosis.
KLF7 functions as a transcription factor, binding to specific DNA sequences to regulate gene expression.
KLF7 takes part in the regulation of metabolic pathways, including glucose homeostasis. KLF7 modulates insulin sensitivity and plays a role in adipocyte differentiation.
KLF7 contributes to the progression of type 2 diabetes by inhibiting hormone expression and secretion in pancreatic beta-cells and also by deregulating adipocytokine secretion in adipocytes.
KLF7 is critical in the development and maturation of neurons. KLF7 promotes the differentiation of neural progenitor cells and influences axon growth and synaptic plasticity.

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:

Insulin Like Growth Factor-2 Mouse Recombinant

Somatomedin-A, IGF2, INSIGF, pp9974, C11orf43, FLJ22066, FLJ44734

Product # :

CYT-1196

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Quantity :

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Description

IGF2 Mouse Recombinant produced in E.Coli is a single, non-glycosylated, monomeric polypeptide chain containing 67 amino acids and having a total molecular mass of 7.4kDa.The IGF2 is purified by proprietary chromatographic techniques.

Source

Escherichia Coli.

Formulation

Lyophilized from a sterile (0.2µ) filtered solution containing 0.1 % trifluoroacetic acid (TFA).

Purity

Greater than 95.0% as determined by SDS-PAGE.

Biological Activity

The ED₅₀ as determined by FDC-P1 cell proliferation is ≤ 50 ng/mL, corresponding to a specific activity of ≥ 2.0 x 10^4 units/mg.

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Introduction
Insulin-like growth factor II (IGF-II) is an important foetal growth hormone.IGF-II is made by theca cells during gestation. IGF-II binds the sink IGF-II receptor (IGF2R) which results in IGF-II degradation.IGF-II also engages the IGF-I receptor (IGF1R) to arbitrate embryonic growth.
Synonyms
Somatomedin-A, IGF2, INSIGF, pp9974, C11orf43, FLJ22066, FLJ44734
Physical Appearance
Sterile Filtered White lyophilized (freeze-dried) powder.
Stability
Lyophilized IGF2 although stable at room temperature for 3 weeks, should be stored desiccated below -18°C. Upon reconstitution IGF2 Human 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 IGF2 in sterile water at a concentration of 0.1 mg/ml, which can then be further diluted to other aqueous solutions.
Amino Acid Sequence
AYGPGETLCG GELVDTLQFV CSDRGFYFSR PSSRANRRSR GIVEECCFRS CDLALLETYC ATPAKSE
Background
What is the molecular weight/Mw of IGF2 MOUSE Protein?
IGF2 MOUSE Protein has a total Mw of 7.4kDa.

What is the source or expression system of IGF2 MOUSE Protein?
Escherichia Coli.

What is the Purity of IGF2 MOUSE Protein?
IGF2 MOUSE Protein is >95% pure as determined by SDS-PAGE.

What is the Biological Activity of IGF2 MOUSE Protein?
The ED50 as determined by FDC-P1 cell proliferation is ≤ 50 ng/mL, corresponding to a specific activity of ≥ 2.0 x 10^4 units/mg.

What is the amino acid sequence of IGF2 MOUSE Protein?
AYGPGETLCG GELVDTLQFV CSDRGFYFSR PSSRANRRSR GIVEECCFRS CDLALLETYC ATPAKSE

What applications can IGF2 MOUSE Protein be used in?
IGF2 MOUSE Protein can probably be used in western blot, ELISA and Lateral Flow.

What is the endotoxin level for IGF2 MOUSE Protein?
The endotoxin level is minimal, IGF2 MOUSE 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:

Thyroglobulin Human

Thyroglobulin, TGN, AITD3, TG.

Product # :

PRO-443

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Quantity :

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Description

Human Thyroglobulin is a glycosylated, polypeptide chain having a total molecular mass of 660 kDa (330 kDa per subunit).

Source

Human thyroid glands.

Formulation

Lyophilized from 0.02M NH4HCO3. May contain traces of buffer salts.

Purity

Greater than 98.0%.

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Introduction
Thyroglobulin (TG) represents one of the main autoantigenic targets in autoimmune thyroid disease of humans. TG is a large globular dimeric glycoprotein with a total molecular weight of 660 kDa, which occupies a key precursor role in the biosynthesis of the thyroid hormones. Approximately 75% of the total protein content of the thyroid follicle consists of TG. The thyroid gland uses the Thyroglobulin in order to produce the thyroid hormones thyroxine (T4) and triiodothyronine (T3). Thyroglobulin is produced by the thyroid epithelial cells (thyrocytes) which form spherical follicles. Thyroglobulin is subsequently secreted and stored in the follicular lumen.
Patients with Hashimoto's thyroiditis or Graves' disease, frequently develop antibodies against Thyroglobulin. Tg-specific antibodies help in the diagnosis of the above diseases, however they also may be present in apparently healthy euthyroid individuals. Blood Thyroglobulin levels can be used as a tumor marker for certain kinds of thyroid cancer, and the may also be elevated in cases of Graves' disease.
Synonyms
Thyroglobulin, TGN, AITD3, TG.
Physical Appearance
Sterile Filtered Off-White lyophilized (freeze-dried) powder.
Stability
Human Thyroglobulin although stable at room temperature for 3 weeks, should be stored between 2-8°C.
Solubility
Use phosphate buffer, pH>7.0 containing 0.15M NaCl is recommended.
Human Virus Test
Starting material tested and certified negative for HIV I & II antibodies, Hepatitis B surface antigen, Hepatitis C antibodies, Syphilis and HIV-1/HBV/HCV NAT.

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 Quadruple Antagonist, Pegylated Rat Recombinant

OB Protein, Obesity Protein, OBS, Obesity factor.

Product # :

CYT-1241

Price :

Quantity :

Shipping Method :

Shipped at Room temp

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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.

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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.

Description:

S100 Calcium Binding Protein A7A Human Recombinant

NICE-2, NICE2, Protein S100-A7A, S100A15, S100A7f, S100A7L1, S100 calcium-binding protein A15, S100 calcium-binding protein A7A, S100 calcium-binding protein A7-like 1, S100A7A.

Product # :

PRO-756

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Quantity :

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Description

The S100A7A Human Recombinant is manufactured with N-terminal fusion of 9 amino acids His Tag. The S100A7A His -Tagged Fusion Protein is a 12.3kDa protein containing 109 amino acid residues and 9 additional amino acid residues - His Tag (underlined).

Source

Escherichia Coli.

Formulation

Filtered and lyophilized from 0.5mg/ml in 20mM Tris buffer and 50mM NaCl pH-7.5.

Purity

Greater than 90% as determined by SDS-PAGE.

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Introduction
S100A7A takes part in epidermal differentiation and inflammation thus is significant for the pathogenesis of psoriasis and other diseases.
Synonyms
NICE-2, NICE2, Protein S100-A7A, S100A15, S100A7f, S100A7L1, S100 calcium-binding protein A15, S100 calcium-binding protein A7A, S100 calcium-binding protein A7-like 1, S100A7A.
Stability
Store lyophilized S100A7A Human recombinant at -20°C. Aliquot the product after reconstitution to avoid repeated freezing/thawing cycles. Reconstituted S100A7A 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
Add pyrogen free water to a working concentration of 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 in the cell culture.
Amino Acid Sequence
MMKHHHHHHASNTQAERSIIG MIDMFHKYTG RDGKIEKPSL LTMMKENFPN FLSACDKKGI HYLATVFEKK DKNEDKKIDF SEFLSLLGDI AADYHKQSHG AAPCSGGSQ.

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:

MYDGF Human Recombinant

C19orf10, Interleukin-25, IL-25, IL25, IL27, IL-27, IL27w, IL-27w, Stromal cell-derived growth factor SF20, UPF0556 protein C19orf10, chromosome 19 open reading frame 10.

Product # :

CYT-622

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Shipped with Ice Packs

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Description

SF20 Human Recombinant produced in E.Coli is single, a non-glycosylated, Polypeptide chain containing 162 amino acids fragment (33-173) and having a total molecular mass of 18 kDa. C9orf10 is fused to 20 amino acids His tag at N-terminus and is purified by proprietary chromatographic techniques.

Source

Escherichia Coli.

Formulation

C9orf10 is supplied in 20mM Tris HCL pH-8 and 20% glycerol.

Purity

Greater than 95.0% by SDS-PAGE.

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Introduction
SF20 plays a role in proliferation of lymphoid cells and is considered an interleukin. SF20 was initially identified as a product of bone marrow-derived stromal cells.
Synonyms
C19orf10, Interleukin-25, IL-25, IL25, IL27, IL-27, IL27w, IL-27w, Stromal cell-derived growth factor SF20, UPF0556 protein C19orf10, chromosome 19 open reading frame 10.
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. Please avoid freeze thaw cycles.

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:

Transforming Growth Factor-Beta 3 Rat Recombinant

Transforming Growth Factor-beta3, TGFB3, ARVD, FLJ16571, TGF-beta3.

Product # :

CYT-1269

Price :

Quantity :

Shipping Method :

Shipped at Room temp

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Description

TGFB3 Rat Recombinant produced in CHO cells is a glycosylated, polypeptide homodimer chain containing 2x112 amino acids and having a total molecular mass of 25.0kDa. The TGFB3 is purified by proprietary chromatographic techniques.

Source

CHO cells.

Formulation

TGFB3 was lyophilized from a concentrated solution containing 35% (v/v) Acetonitrile and 0.1% (v/v) TFA.

Purity

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

Biological Activity

The ED50 as determined by its ability to inhibit the mouse IL-4-dependent proliferation of mouse HT-2 cells is less than 0.05 ng/ml, corresponding to a specific activity of ≥ 2.0 × 107 units/mg.

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Synonyms
Transforming Growth Factor-beta3, TGFB3, ARVD, FLJ16571, TGF-beta3.
Physical Appearance
Sterile Filtered White lyophilized (freeze-dried) powder.
Stability
Lyophilized Transforming Growth Factor-Beta 3 Recombinant although stable at room temperature for 3 weeks, should be stored desiccated below -18°C. Upon reconstitution TGFB3 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 TGFB3 in sterile 4mM HCl to a concentration of 0.1-1.0 mg/mL. Stock solutions should be apportioned into working aliquots and stored at ≤-20°C which can then be further diluted to other aqueous solutions.
Amino Acid Sequence
ALDTNYCFRN LEENCCVRPL YIDFRQDLGW KWVHEPKGYY ANFCSGPCPY LRSSDTTHST VLGLYNTLNP EASASPCCVP QDLEPLTILY YVGRTPKVEQ LSNMVVKSCK CS.
Background
Recombinant TGF-β3 Rat is commonly used in cell culture and biomedical research to investigate TGF-β signalling, stem cell differentiation, tissue engineering, chondrogenesis, wound healing, fibrosis, and cancer biology. TGFB3 is added to mesenchymal stem cell and chondrocyte cultures to promote cartilage formation and maintain specific cellular phenotypes under defined experimental conditions.

What is the molecular weight / Mw of TGFB3 Rat Protein?
TGFB3 Rat Protein has a total Mw of 25kDa.

What is the source or expression system of TGFB3 Rat Protein?
CHO Cells

What is the Purity of TGFB3 Rat Protein?
TGFB3 rat Protein is >97% pure as determined by SDS-PAGE.

What is the Biological Activity of TGFB3 rat Protein?
Determined by the ability to inhibit the mouse IL-4-dependent proliferation of mouse HT-2 cells. The expected ED50 for this effect is less than 0.05 ng/ml, corresponding to a specific activity of ≥ 2.0×107 units/mg.

What is the amino acid sequence of TGFB3 Protein?
ALDAAYCFRN VQDNCCLRPL YIDFKRDLGW KWIHEPKGYN ANFCAGACPY LWSSDTQHSR VLSLYNTINP EASASPCCVS QDLEPLTILY YIGKTPKIEQ LSNMIVKSCK CS

What applications can TGFB3 rat Protein be used in?
TGFB3 rat Protein can probably be used in western blot, ELISA and Lateral Flow.

What is the endotoxin level for TGFB3 rat Protein?
The endotoxin level is minimal, TGFB3 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.

Description:

Eukaryotic Translation Initiation Factor 1B Human Recombinant

Eukaryotic translation initiation factor 1b, eIF1b, Protein translation factor SUI1 homolog GC20, EIF1B, GC20.

Product # :

PRO-175

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Quantity :

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Shipped with Ice Packs

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Description

EIF1B 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 133 amino acids (1-113 a.a.) and having a molecular mass of 15kDa. The EIF1B is purified by proprietary chromatographic techniques.

Source

Escherichia Coli.

Formulation

The EIF1B solution (1 mg/ml) contains 20mM Tris-HCl buffer(pH 8.0), 10% glycerol, 2mM DTT and 0.1M NaCl.

Purity

Greater than 95.0% as determined by SDS-PAGE.

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Introduction
EIF1B is critical for the scanning process in vitro. EIF1B is an element of a complex involved in recognition of the initiator codon during the scanning process. Translation is also initiated by the function of EIF1B in regulating the activity of ribosomal subunits 43S, 48S and 40S. EIF1B enables 43S ribosomal complexes to distinguish between cognate and near-cognate initiation codons, perceiving the nucleotide content of initiation codons.
Synonyms
Eukaryotic translation initiation factor 1b, eIF1b, Protein translation factor SUI1 homolog GC20, EIF1B, GC20.
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 MSTIQNLQSF DPFADATKGD DLLPAGTEDY IHIRIQQRNG RKTLTTVQGI ADDYDKKKLV KAFKKKFACN GTVIEHPEYG EVIQLQGDQR KNICQFLLEV GIVKEEQLKV HGF.

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:

Basic Transcription Factor 3-Like 4 Human Recombinant

Basic transcription factor 3-like 4, BTF3L4.

Product # :

PRO-1870

Price :

Quantity :

Shipping Method :

Shipped with Ice Packs

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Description

BTF3L4 Human Recombinant produced in E.Coli is a single, non-glycosylated polypeptide chain containing 101 amino acids (1-78 a.a) and having a molecular mass of 11.3kDa. BTF3L4 is fused to a 23 amino acid His-tag at N-terminus & purified by proprietary chromatographic techniques.

Source

Escherichia Coli.

Formulation

BTF3L4 protein solution (1mg/ml) containing 20mM Tris-HCl buffer (pH 8.0), 10% glycerol and 0.4M Urea.

Purity

Greater than 85.0% as determined by SDS-PAGE.

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Introduction
BTF3L4 is a part of the NAC-beta family which contains 1 NAC-A/B (NAC-alpha/beta) domain and required for the initiation of transcription. BTF3L4 binds to polypeptide chains as they emerge from the ribosome and prevents their interaction with the SRP, which usually targets nascent secretory peptides to the ER. BTF3 is also a general transcription factor which forms a stable complex with RNA polymerase II.
Synonyms
Basic transcription factor 3-like 4, BTF3L4.
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 MGSMNQEKLA KLQAQVRIGG KGTARRKKKV VHRTATADDK KLQSSLKKLA VNNIAGIEES WTVKHQNQKT LMRKMMMFQI L.

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:

Fibroblast Growth Factor-21 Mouse Recombinant, His Tag

Fibroblast growth factor 21, FGF-21.

Product # :

CYT-516

Price :

Quantity :

Shipping Method :

Shipped at Room temp

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Description

Fibroblast Growth Factor -21 Mouse Recombinant produced in E.Coli is a single, non-glycosylated, polypeptide chain containing 192 amino acids and having a molecular mass of 21.2 kDa. The amino acid sequence of the recombinant human FGF21 is 100% homologous to the amino acid sequence of the Mouse FGF21 without signal sequence and contains 10 a.a. His tag at N-terminal.The FGF-21 is purified by proprietary chromatographic techniques.

Source

Escherichia Coli.

Formulation

Filtered (0.4 µm) and lyophilized from 0.5 mg/ml in 20mM TRIS, 20mM NaCl, pH 7.5.

Purity

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

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Introduction
The FGFs are a family of more than 20 small (~17–26 kDa) secreted peptides. The initial characterization of these proteins focused on their ability to stimulate fibroblast proliferation. This mitogenic activity was mediated through FGF receptors (FGFRs) 1, 2, or 3. A fourth closely related tyrosine kinase receptor (FGFR4) was able to bind the FGFs but did not lead to a mitogenic response.
FGFs modulate cellular activity via at least 5 distinct subfamilies of high-affinity FGF receptors (FGFRs): FGFR-1, -2, -3, and -4, all with intrinsic tyrosine kinase activity and, except for FGFR-4, multiple splice isoforms, and FGFR-5, which lacks an intracellular kinase domain. There is growing evidence that FGFRs can be important for regulation of glucose and lipid homeostasis. The overexpression of a dominant negative form of FGFR-1 in ? cells leads to diabetes in mice, which thus implies that proper FGF signaling is required for normal ? cell function and glycemia maintenance. FGFR-2 appears to be a key molecule during pancreatic development. Moreover, FGFR-4 has been implicated in cholesterol metabolism and bile acid synthesis.
FGF-19, has been shown to cause resistance to diet-induced obesity and insulin desensitization and to improve insulin, glucose, and lipid profiles in diabetic rodents. Since these effects, at least in part, are mediated through the observed changes in metabolic rates, FGF-19 can be considered as a regulator of energy expenditure.
FGF-21 is preferentially expressed in liver, but an exact knowledge of FGF-21 bioactivity and its mode of action have been lacking to date. FGF-21 is a potent activator of glucose uptake on adipocytes, protects animals from diet-induced obesity when overexpressed in transgenic mice, and lowers blood glucose and triglyceride levels when therapeutically administered to diabetic rodents.
Synonyms
Fibroblast growth factor 21, FGF-21.
Physical Appearance
Filtered white lyophilized powder.
Stability
Lyophilized FGF-21 Mouse Recombinant although stable at room temperature for 3 weeks, should be stored desiccated below -18°C. Upon reconstitution Fibroblast Growth Factor 21 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 add deionized water to prepare a working stock solution of approximately 0.5 mg/ml and let the lyophilized pellet dissolve completely. Product is not sterile! Please filter the product by an appropriate sterile filter before using it in the cell culture. Add DTT (0.2mM) and NaCl (0.1-0.15M) before freezing to prevent potential aggregation.
Amino Acid Sequence
MKHHHHHHAS AYPIPDSSPL LQFGGQVRQR YLYTDDDQDT EAHLEIREDG TVVGAAHRSP ESLLELKALKPGVIQILGVK ASRFLCQQPD GALYGSPHFD PEACSFRELL LEDGYNVYQS EAHGLPLRLP QKDSPNQDATSWGPVRFLPM PGLLHEPQDQ AGFLPPEPPD VGSSDPLSMV EPLQGRSPSY AS.
Background
What is the molecular weight/Mw of FGF21 MOUSE,HIS Protein?
FGF21 MOUSE,HIS Protein has a total Mw of 21.2kDa.

What is the source or expression system of FGF21 MOUSE,HIS Protein?
Escherichia Coli.

What is the Purity of FGF21 MOUSE,HIS Protein?
FGF21 MOUSE,HIS Protein is >95% pure as determined by SDS-PAGE.

What is the Biological Activity of FGF21 MOUSE,HIS Protein?
The biological functionality of FGF21 MOUSE,HIS Protein will be determined in the future.

What is the amino acid sequence of FGF21 MOUSE,HIS Protein?
MKHHHHHHAS AYPIPDSSPL LQFGGQVRQR YLYTDDDQDT EAHLEIREDG TVVGAAHRSP ESLLELKALKPGVIQILGVK ASRFLCQQPD GALYGSPHFD PEACSFRELL LEDGYNVYQS EAHGLPLRLP QKDSPNQDATSWGPVRFLPM PGLLHEPQDQ AGFLPPEPPD VGSSDPLSMV EPLQGRSPSY AS.

What applications can FGF21 MOUSE,HIS Protein be used in?
FGF21 MOUSE,HIS Protein can probably be used in western blot, ELISA and Lateral Flow.

What is the endotoxin level for FGF21 MOUSE,HIS Protein?
The endotoxin level is minimal, FGF21 MOUSE,HIS Protein was purified using conventional chromatography techniques.

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

Description:

Fibroblast Growth Factor Binding Protein 1 Human Recombinant

Fibroblast Growth Factor Binding Protein 1, FGFBP, HBP17, 17 KDa Heparin-Binding Growth Factor-Binding Protein, 17 KDa HBGF-Binding Protein, FGF-Binding Protein 1, FGF-BP1, FGFBP-1, FGF-BP, Heparin-Binding Growth Factor Binding Protein, Fibroblast Growth Factor-Binding Protein 1, Fibroblast growth factor-binding protein 1.

Product # :

CYT-860

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Quantity :

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Shipped with Ice Packs

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Citations

Description

FGFBP Human Recombinant produced in E.Coli is a single, non-glycosylated polypeptide chain containing 234 amino acids (24-234 a.a) and having a molecular mass of 26.2kDa. FGFBP is fused to a 23 amino acid His-tag at N-terminus & purified by proprietary chromatographic techniques.

Source

Escherichia Coli.

Formulation

FGFBP protein solution (0.25mg/ml) containing Phosphate buffered saline (pH7.4), 10% glycerol and 1mM DTT.

Purity

Greater than 85.0% as determined by SDS-PAGE.

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Introduction
Fibroblast Growth Factor Binding Protein 1, also known as FGFBP1 is a secreted fibroblast growth factor carrier protein. FGFBP1 plays a vital part in cell proliferation, differentiation and migration by binding to fibroblast growth factors and potentiating their biological effects on target cells. In addition, FGFBP1 also takes part in tumor growth as an angiogenic switch molecule, furthermore an expression of FGFBP1 has been associated with more than a few types of cancer as well as pancreatic and colorectal adenocarcinoma.
Synonyms
Fibroblast Growth Factor Binding Protein 1, FGFBP, HBP17, 17 KDa Heparin-Binding Growth Factor-Binding Protein, 17 KDa HBGF-Binding Protein, FGF-Binding Protein 1, FGF-BP1, FGFBP-1, FGF-BP, Heparin-Binding Growth Factor Binding Protein, Fibroblast Growth Factor-Binding Protein 1, Fibroblast growth factor-binding protein 1.
Physical Appearance
Sterile Filtered colorless 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).Please avoid freeze thaw cycles.
Amino Acid Sequence
MGSSHHHHHH SSGLVPRGSH MGSKKKVKNG LHSKVVSEQK DTLGNTQIKQ KSRPGNKGKF VTKDQANCRW AATEQEEGIS LKVECTQLDH EFSCVFAGNP TSCLKLKDER VYWKQVARNL RSQKDICRYS KTAVKTRVCR KDFPESSLKL VSSTLFGNTK PRKEKTEMSP REHIKGKETT PSSLAVTQTM ATKAPECVED PDMANQRKTA LEFCGETWSS LCTFFLSIVQ DTSC.
Background
What is the molecular weight/Mw of CYT-860 Protein?
CYT-860 Protein has a total Mw of 26.2kDa.

What is the source or expression system of CYT-860 Protein?
Escherichia Coli.

What is the Purity of CYT-860 Protein?
CYT-860 Protein is >85% pure as determined by SDS-PAGE.

What is the Biological Activity of CYT-860 Protein?
The biological functionality of CYT-860 Protein will be determined in the future.

What is the amino acid sequence of CYT-860 Protein?
MGSSHHHHHH SSGLVPRGSH MGSKKKVKNG LHSKVVSEQK DTLGNTQIKQ KSRPGNKGKF VTKDQANCRW AATEQEEGIS LKVECTQLDH EFSCVFAGNP TSCLKLKDER VYWKQVARNL RSQKDICRYS KTAVKTRVCR KDFPESSLKL VSSTLFGNTK PRKEKTEMSP REHIKGKETT PSSLAVTQTM ATKAPECVED PDMANQRKTA LEFCGETWSS LCTFFLSIVQ DTSC.

What applications can CYT-860 Protein be used in?
CYT-860 Protein can probably be used in western blot, ELISA and Lateral Flow.

What is the endotoxin level for CYT-860 Protein?
The endotoxin level is minimal, CYT-860 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:

Platelet Factor-4 (CXCL4) Bovine Recombinant

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

Product # :

CHM-039

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Shipped at Room temp

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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 CXCL4 BOVINE Protein?
CXCL4 BOVINE Protein has a total Mw of 9.5kDa.

What is the source or expression system of CXCL4 BOVINE Protein?
Escherichia Coli.

What is the Purity of CXCL4 BOVINE Protein?
CXCL4 BOVINE Protein is > 95% pure as determined by SDS-PAGE.

What is the Biological Activity of CXCL4 BOVINE Protein?
The biological activity determined by a chemotaxis bioassay using human neutrophils is 10-100ng/ml.

What is the amino acid sequence of CXCL4 BOVINE Protein?
ESSFPATFVP LPADSEGGED EDLQCVCLKT TSGINPRHIS SLEVIGAGTH CPSPQLLATK KTGRKICLDQ QRPLYKKILK KLLDGDES.

What applications can CXCL4 BOVINE Protein be used in?
CXCL4 BOVINE Protein can probably be used in western blot, ELISA and Lateral Flow.

What is the endotoxin level for CXCL4 BOVINE Protein?
The endotoxin level is minimal, CXCL4 BOVINE Protein was purified using conventional chromatography techniques.

Who supplies recombinant CXCL4 BOVINE that is in stock and available to order?
ProSpec has the protein in stock and available for immediate delivery.

Where can I order bulk mg quantities of CXCL4 BOVINE?
ProSpec supplies bulk mg quantities at affordable prices that meets research and academic budgets.

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:

Insulin-Like Growth Factor-1 Clone PAT6F8AT, Mouse Anti Human

Somatomedin C, IGF-I, IGFI, IGF1, IGF-IA, Mechano growth factor, MGF.

Product # :

ANT-538

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Shipped with Ice Packs

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Formulation

1mg/ml containing PBS, pH-7.4, 10% Glycerol and 0.02% Sodium Azide.

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Introduction
The somatomedins, or insulin-like growth factors (IGFs), comprise a family of peptides that play important roles in mammalian growth and development. IGF1 mediates many of the growth-promoting effects of growth hormone (GH; MIM 139250). Early studies showed that growth hormone did not directly stimulate the incorporation of sulfate into cartilage, but rather acted through a serum factor, termed 'sulfation factor,' which later became known as 'somatomedin' (Daughaday et al., 1972). Three main somatomedins have been characterized: somatomedin C (IGF1), somatomedin A (IGF2; MIM 147470), and somatomedin B (MIM 193190) (Rotwein, 1986; Rosenfeld, 2003).
Synonyms
Somatomedin C, IGF-I, IGFI, IGF1, IGF-IA, Mechano growth factor, MGF.
Physical Appearance
Sterile filtered colorless solution.
Immunogen
Anti-human IGF1 mAb, clone PAT6F8AT, is derived from hybridization of mouse F0 myeloma cells with spleen cells from BALB/c mice immunized with a recombinant human IGF1 protein 49-118 amino acids purified from E. coli.
Ig Subclass
Mouse IgG2b heavy chain and k light chain.
Clone
PAT6F8AT.
Applications
HSPA5 antibody has been tested by ELISA, Western blot analysis to assure specificity and reactivity. Since application varies, however, each investigation should be titrated by the reagent to obtain optimal results. Recommended starting dilution is 1:1000.
Type
Mouse Anti Human Monoclonal.
Storage Procedures
For periods up to 1 month store at 4°C, for longer periods of time, store at -20°C. Prevent freeze thaw cycles.
Purification Method
IGF1 antibody was purified from mouse ascitic fluids by protein-A affinity chromatography.

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:

Tumor Necrosis Factor-Alpha Rat Recombinant

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

Product # :

CYT-393

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Shipped at Room temp

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Description

Tumor Necrosis Factor-a Rat Recombinant produced in E.Coli is a single, non-glycosylated, polypeptide chain containing 157 amino acids and having a molecular mass of 17339.44 Dalton. The TNF-alpha is purified by standard chromatographic techniques.

Source

Escherichia Coli.

Formulation

The concentrated protein solution (1mg/ml) was lyophilized from 20mM phosphate buffer and 0.1M NaCl.

Purity

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

Biological Activity

The ED50 as determined by the cytolysis of murine L929 cells in the presence of Actinomycin D is < 0.05ng/ml, corresponding to a Specific Activity of 20,000,000IU/mg.

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Introduction
Tumor necrosis factor is a cytokine involved in systemic inflammation and is a member of a group of cytokines that all stimulate the acute phase reaction. TNF is mainly secreted by macrophages.
TNF causes apoptotic cell death, cellular proliferation, differentiation, inflammation, tumorigenesis and viral replication, TNF is also involved in lipid metabolism, and coagulation. TNF's primary role is in the regulation of immune cells.
Dysregulation and, in particular, overproduction of TNF have been implicated in a variety of human diseases- autoimmune diseases, and cancer.
Synonyms
TNF-alpha, Tumor necrosis factor ligand superfamily member 2, TNF-a, Cachectin, DIF, TNFA, TNFSF2.
Physical Appearance
Sterile Filtered White lyophilized (freeze-dried) powder.
Stability
Lyophilized Tumor Necrosis Factor-a although stable at room temperature for 3 weeks, should be stored desiccated below -18°C. Upon reconstitution TNF-a should be stored at 4°C between 2-7 days and for future use below -18°C.For long term storage it is recommended to add a carrier protein (0.1% HSA or BSA).Please prevent freeze-thaw cycles.
Solubility
It is recommended to reconstitute the lyophilized Tumor Necrosis Factor-alpha in sterile 18M-cm H2O not less than 100µg/ml, which can then be further diluted to other aqueous solutions.
Amino Acid Sequence
MLRSSSQNSS DKPVVHVVAN HQAEEQLEWL SQRANALLAN GMDLKDNQLV VPADGLYLIY SQVLFKGQGC PDYVLLTHTV SRFATSYQEK VSLLSAIKSP CPKDTPEGAE LKPWYEPMYL GGVSQLEKGD LLSAEVNLPK YLDITESGQV YFGVIAL.

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 Pufferfish Recombinant

OB Protein, Obesity Protein, OBS, Obesity factor.

Product # :

CYT-530

Price :

Quantity :

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Shipped at Room temp

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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.

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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 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.

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