Search: 1000 results found for "growth hormone"

Description:

Transforming Growth Factor-Beta 1 Rat Recombinant

Transforming growth factor beta-1, TGF-beta-1, Tgfb, Tgfb-1, TGFbeta1.

Product # :

CYT-1265

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Description

Transforming Growth Factor-Beta 1 Rat Recombinant produced in CHO is a homodimer, polypeptide chain containing 2 x 112 amino acids and having a total molecular mass of 25.6kDa.
TGFB1 Rat Recombinant is purified by proprietary chromatographic techniques.

Source

CHO Cells.

Formulation

The protein was lyophilized with 0.1% (v/v) TFA and 35% (v/v) Acetonitrile.

Purity

Greater than 97.0% as determined by SDS-PAGE and SEC-HPLC analyses.

Biological Activity

The biological activity was determined by TGFB1 ability to inhibit the mouse IL-4-dependent proliferation of mouse HT-2 cells. The expected ED50 for this effect is <0.05ng/ml, corresponding to a specific activity of ≥ 2.0 × 107 units/mg.

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Synonyms
Transforming growth factor beta-1, TGF-beta-1, Tgfb, Tgfb-1, TGFbeta1.
Physical Appearance
Sterile Filtered White lyophilized (freeze-dried) powder.
Stability
Lyophilized TGFB1 although stable at room temperature for 3 weeks, should be stored desiccated below -18°C. Upon reconstitution Transforming Growth Factor-Beta 1 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 Transforming Growth Factor-Beta 1 in sterile 4mM HCl not less than 100µg/ml, which can then be further diluted to other aqueous solutions.
Amino Acid Sequence
MGSSHHHHHH SSGLVPRGSH MGSALDTNYC FSSTEKNCCV RQLYIDFRKD LGWKWIHEPK GYHANFCLGP CPYIWSLDTQ YSKVLALYNQ HNPGASASPC CVPQALEPLP IVYYVGRKPK VEQLSNMIVR SCKCS.
Background
Mouse TGF-β1 as an inducer of EMT [epithelial–mesenchymal transition ] therefore used in in fibrosis, wound healing, cancer invasion, and metastasis. Mouse TGF-β1 decreases E-cadherin expression and increases N-cadherin, vimentin and fibronectin.
TGF-β1 is produced by T regulatory cells (Tregs), Macrophages and monocytes, Platelets, Fibroblasts, Epithelial cells, Endothelial cells, Smooth muscle cells, Tumor cells, Activated immune cells
What is the source or expression system of Mouse TGFB1 Protein?
CHO Cells

What is the Purity of Mouse TGFB1 Protein?
Mouse TGFB1 Protein is >97% pure as determined by SDS-PAGE and SEC-HPLC analyses.

What is the molecular weight of Mouse TGFB1 Protein?
Mouse TGFB1 Protein having a total Mw of 25.6kDa.

What is the Biological Activity of Mouse TGFB1 Protein?
The biological functionality of Mouse TGFB1 Protein is determined by mouse HT-2 cells.

What is the endotoxin level for Mouse TGFB1 Protein?
The endotoxin level is minimal, Mouse TGFB1 Protein was purified using conventional chromatography techniques.

What is the amino acid sequence of Mouse TGFB1 Protein?
ALDTNYCFSS TEKNCCVRQL YIDFRKDLGW KWIHEPKGYH ANFCLGPCPY IWSLDTQYSK VLALYNQHNP GASASPCCVP QALEPLPIVY YVGRKPKVEQ LSNMIVRSCK CS.

Is TGFB1 a homodimer / homodimeric protein?
Yes, TGFB1 is homo dimer consisting of 2 identical chains.

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:

RAS-like, Estrogen-Regulated, Growth Inhibitor Human Recombinant

Ras-related and estrogen-regulated growth inhibitor, RERG, MGC15754.

Product # :

PRO-106

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Description

RERG 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 219 amino acids (1-199 a.a.) and having a molecular mass of 24.7kDa (Molecular size on SDS-PAGE will appear higher). The RERG is purified by proprietary chromatographic techniques.

Source

Escherichia Coli.

Formulation

The RERG solution (0.25 mg/ml) contains 20mM Tris-HCl buffer (pH8.0), 0.2M NaCl, 5mM DTT and 50% glycerol.

Purity

Greater than 85.0% as determined by SDS-PAGE.

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Introduction
RERG is a 199 amino acid protein which localizes in the cytoplasm and is a member of the Ras subfamily of small GTPases. RERG is expressed in the pancreas, liver, skin, lung, brain, kidney and heart tissue. RERG is a vital mediator of diverse cell signaling pathways, including those leading to cell proliferation, cytoskeletal organization and secretion.
Synonyms
Ras-related and estrogen-regulated growth inhibitor, RERG, MGC15754.
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 MAKSAEVKLA IFGRAGVGKS ALVVRFLTKR FIWEYDPTLE STYRHQATID DEVVSMEILD TAGQEDTIQR EGHMRWGEGF VLVYDITDRG SFEEVLPLKN ILDEIKKPKN VTLILVGNKA DLDHSRQVST EEGEKLATEL ACAFYECSAC TGEGNITEIF YELCREVRRR RMVQGKTRRR SSTTHVKQAI NKMLTKISS.

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:

Sex Hormone-Binding Globulin Human Recombinant

Sex hormone-binding globulin, SHBG, Sex steroid-binding protein, SBP, Testis-specific androgen-binding protein, ABP, Testosterone-estradiol-binding globulin, TeBG, Testosterone-estrogen-binding globulin, SHBG.

Product # :

PRO-1603

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Description

SHBG Human Recombinant produced in CHO cells is a single, glycosylated, polypeptide chain containing a total of 428 amino acids, having a molecular mass of 46.79kDa (calculated), the SHBG is fused to a 6 a.a C-terminal His tag and also includes a myc-epitope.The Human SHBG is purified by proprietary chromatographic techniques.

Source

CHO cells.

Formulation

SHBG filtered solution at a concentration of 55.6µg/ml in certified FBS (Fetal Bovine Serum 5%).

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Introduction
Sex-hormone-binding globulin (SHBG) is a beta-globulin which specifically binds steroid hormones; it is involved in the transport of sex steroids in plasma. The main site of SHBG synthesis is assumed to be the hepatocytes. The production of SHBG is regulated by androgen/estrogen balance, thyroid hormones, and dietary factors, among others. The concentration of SHBG is a key factor regulating their distribution between protein-bound and free states. SHBG concentration determination is primarily significant in the evaluation of mild disorders of androgen metabolism and it allows detection of women with hirsutism who are likely to react to estrogen therapy. Testosterone/SHBG-ratios correlate well with both measured and calculated values for free testosterone thus aid to distinguish between subjects with excessive androgen activity and normal individuals. SHBG gene polymorphisms are linked with polycystic ovary syndrome and type 2 diabetes mellitus.
Synonyms
Sex hormone-binding globulin, SHBG, Sex steroid-binding protein, SBP, Testis-specific androgen-binding protein, ABP, Testosterone-estradiol-binding globulin, TeBG, Testosterone-estrogen-binding globulin, SHBG.
Physical Appearance
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
AAQPARRARR TKLLLLLLLL LRHTRQGWAL RPVLPTQSAH DPPAVHLSNG PGQEPIAVMT FDLTKITKTS SSFEVRTWDP EGVIFYGDTN PKDDWFMLGL RDGRPEIQLH NHWAQLTVGA GPRLDDGRWH QVEVKMEGDS VLLEVDGEEV LRLRQVSGPL TSKRHPIMRI ALGGLLFPAS NLRLPLVPAL DGCLRRDSWL DKQAEISASA PTSLRSCDVE SNPGIFLPPG TQAEFNLRDI PQPHAEPWAF SLDLGLKQAA GSGHLLALGT PENPSWLSLH LQDQKVVLSS GSGPGLDLPL VLGLPLQLKL SMSRVVLSQG SKMKALALPP LGLAPLLNLW AKPQGRLFLG ALPGEDSSTS FCLNGLWAQG QRLDVDQALN RSHEIWTHSC PQSPGNGTDA SHSRGGPEQKLISEEDLNSA VDHHHHHH.

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 Antagonist Triple Mutant Human Recombinant, Pegylated

Product # :

CYT-702

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Description

Pegylated Leptin Antagonist Triple Mutant Human Recombinant is a single non-glycosilated polypeptide chain containing 146 amino and additional Ala at N-terminus acids and having a molecular weight of 35.6kDa, Leptin was mutated, resulting in L39A/D40A/F41A. However due to enlarged hydrodymanic volume it runs on the SDS-PAGE as 48 kDa protein and in gel-filtration on Superdex 200 as over 200 kDa protein. Leptin Antagonist Triple Mutant Human Recombinant is Mono-Pegylated with 20kDa PEG and was purified by proprietary chromatographic techniques.

Source

Escherichia coli.

Formulation

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

Purity

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

Biological Activity

Capable of inhibiting leptin-induced proliferation of BAF/3 cells stably transfected with the long form of human leptin receptor. Its in vitro activity is 6-8 fold lower than the non-pegylated antagonist but in vivo it has profound weight gain effect (as compared to the non-pegylated antagonist), resulting mainly from increased food intake. Its in vivo activity compared to that of PEG-MLA is 9-27 fold higher.

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Physical Appearance
White lyophilized (freeze-dried) powder.
Stability
Lyophilized PEG-SHLA although stable at room temperature for several weeks, should be stored desiccated below - 20C. Upon reconstitution at > 0.1 mg/ml and up to 2 mg/ml of PEG-SHLA and filter sterilization mLEP mutant can be stored at 4C or even room temperature for several weeks making it suitable for long term infusion studies using osmotic pumps. At lower concentration addition of a carrier protein (0.1% HSA or BSA) is suggested. Please prevent freeze-thaw cycles.
Solubility
It is recommended to reconstitute the lyophilized Leptin Antagonist Triple Mutant pegylated Human Recombinant 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.
Protein content
Protein quantitation was carried out by UV spectroscopy at 280 nm using the absorbency value of 0.88 as the extinction coefficient for a 0.1% (1mg/ml) solution at pH 8.0. This value is calculated by the PC GENE computer analysis program of protein sequences (IntelliGenetics).

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

Description:

Epidermal Growth Factor Mouse Recombinant, Biotin

Urogastrone, URG, EGF.

Product # :

CYT-841

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Description

EGF Mouse Recombinant, Biotin produced in E.Coli is a non-glycosylated polypeptide chain containing 61 amino acids and having a total molecular mass of 7.0kDa. This version of EGF has a N terminal leader sequence hosting a biotin conjugation. There are 0.5 biotins for each EGF protein.

Source

Escherichia Coli.

Formulation

The protein (0.5mg/ml) solution contains sterile PBS.

Purity

Greater than 95.0% as determined by analysis by SDS-PAGE.

Biological Activity

The ED₅₀ as determined by the dose-dependent proliferation of mouse BALB/c 3T3 cells is 0.14-0.2ng/ml, corresponding to a specific activity of 7.1x10⁶units/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.
Synonyms
Urogastrone, URG, EGF.
Physical Appearance
Sterile Filtered clear solution.
Stability
Should be stored at 4°C.Please do not freeze.
Amino Acid Sequence
MKKIDDDKNS YPGCPSSYDG YCLNGGVCMH IESLDSYTCN CVIGYSGDRC QTRDLEWWEL R.
Background
Synergistic Explorations: Epidermal Growth Factor Mouse Recombinant and Biotin Conjugation for Enhanced Therapeutic Potential
Abstract:
This research paper delves into the innovative convergence of Epidermal Growth Factor Mouse Recombinant (EGF-MR) and biotin conjugation, unraveling their intricate interplay, molecular attributes, and therapeutic implications. By employing cutting-edge methodologies involving protein engineering, conjugation chemistry, and cellular assays, this study uncovers the augmented cellular responses driven by EGF-MR-biotin complex. The findings highlight a novel avenue for tailored regenerative medicine and targeted therapy.
Introduction:
Epidermal Growth Factor (EGF) governs pivotal cellular processes. This paper navigates the unexplored realm of Epidermal Growth Factor Mouse Recombinant (EGF-MR) in synergy with biotin conjugation, elucidating their combined molecular attributes and therapeutic potential.
Protein Engineering and Biotin Conjugation:
EGF-MR is strategically engineered to enable biotin conjugation, a process that enhances targeting and delivery. This paper delves into site-specific modification approaches, ensuring precise and controlled conjugation of biotin moieties to EGF-MR.
Cellular Signaling Amplification:
The EGF receptor (EGFR) activation triggers cascades of intracellular events. Structural studies and binding kinetics illuminate how the biotin-conjugated EGF-MR modulates EGFR interactions, amplifying downstream signaling pathways like the MAPK and PI3K/Akt cascades.
Cellular Assays and Functional Responses:
In vitro cellular assays, encompassing cell proliferation and migration studies, elucidate the effect of EGF-MR-biotin complex on cellular responses. Live-cell imaging techniques reveal enhanced cell motility and survival, underpinning the potential therapeutic impact.
Tailored Delivery Strategies:
The biotin-avidin interaction offers a strategic avenue for targeted drug delivery. Employing this interaction, EGF-MR-biotin complex can be directed to specific cell types, revolutionizing precision medicine and enabling tailored therapeutic interventions.
Regenerative Medicine and Targeted Therapy:
The augmented cellular responses initiated by EGF-MR-biotin complex hold significant promise. In regenerative medicine, the complex's potential to accelerate tissue regeneration becomes evident. Furthermore, in targeted therapy, the complex's enhanced cellular uptake offers a novel approach to modulate tumor microenvironments.
Future Prospects and Challenges:
While transformative, challenges persist, including optimizing conjugation efficiency and unraveling long-term effects. Future research should focus on refining delivery strategies and conducting comprehensive long-term studies to harness the full therapeutic potential.
Conclusion:
In a convergence of ingenious methodologies and visionary therapeutic approaches, the synergy between Epidermal Growth Factor Mouse Recombinant and biotin emerges as a captivating frontier. The molecular marriage between EGF-MR and biotin not only amplifies cellular responses but also opens doors for targeted interventions and precision therapies, revolutionizing the landscape of medical advancements.
What is the molecular weight/Mw of MEGF, BIOTIN Protein?
MEGF, BIOTIN Protein has a total Mw of 7kDa.

What is the source or expression system of MEGF, BIOTIN Protein?
Escherichia Coli.

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

What is the Biological Activity of MEGF, BIOTIN Protein?
The ED50 as determined by the dose-dependent proliferation of mouse BALB/c 3T3 cells is 0.14-0.2ng/ml, corresponding to a specific activity of 7.1x106units/mg.

What is the amino acid sequence of MEGF, BIOTIN Protein?
MKKIDDDKNS YPGCPSSYDG YCLNGGVCMH IESLDSYTCN CVIGYSGDRC QTRDLEWWEL R.

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

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

Melanoma Inhibitory Activity Human Recombinant

Melanoma-derived growth regulatory protein precursor, Cartilage-derived retinoic acid-sensitive protein, CD-RAP, MIA.

Product # :

CYT-310

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Description

Melanoma Inhibitory Activity Human Recombinant produced in E.Coli is a single, non-glycosylated, polypeptide chain consisting of 108 amino having a total molecular mass of 12237 Dalton.The MIA is purified by proprietary chromatographic techniques.

Source

Escherichia Coli.

Formulation

The protein was lyophilized from a concentrated (1mg/ml) solution containing 20mM Potassium-phosphate pH=7 and 150mM potassium chloride.

Purity

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

Biological Activity

The biological activity is calculated by the inhibiting effect on the invasion of Mel In Tumor cells and found active in Mel In assay.

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Introduction
The Melanoma Inhibitory protein (MIA) was identified as an inhibitor of in vitro growth of malignant melanoma cells. The protein contains a SH3 domain.
MIA acts as a potent tumor cell growth inhibitor for malignant melanoma cells and some other neuroectodermal tumors, including gliomas, in an autocrine fashion. In a study of human melanoma cell lines with different metastatic capacity MIA mRNA expression appeared to be inversely correlated with pigmentation. MIA has been shown to represent a very sensitive and specific serum marker for systemic malignant melanoma that might be useful for staging of primary melanomas, detection of progression from localized to metastatic disease during follow-up, and monitoring therapy of advanced melanomas.
Synonyms
Melanoma-derived growth regulatory protein precursor, Cartilage-derived retinoic acid-sensitive protein, CD-RAP, MIA.
Physical Appearance
Sterile Filtered White lyophilized (freeze-dried) powder.
Stability
Lyophilized MIA although stable at room temperature for 3 weeks, should be stored desiccated below -18°C. Upon reconstitution MIA 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 Melanoma Inhibitory Activity in sterile 18MΩ-cm H2O not less than 100µg/ml, which can then be further diluted to other aqueous solutions.
Amino Acid Sequence
Agrees with the sequence of native MIA human with an addition N-terminal Methionine residue.
MGPMPKLADRKLCADQECSSHPISMAVALQDYMAPDCRFLTIHRGQVV
YVFSLKGRGRFLWGGSVQGDYYGDLAARLGYFPSSIVREDQTLKVDVKT
DKWDFYCQ.
Protein content
UV spectroscopy at 280 nm using the absorption coefficient of 19300 M-1cm-1.

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:

Oncostatin-M Rat Recombinant

Oncostatin-M, OSM, OncoM.

Product # :

CYT-169

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Description

OSM Rat Recombinant produced in E.coli is a single, non-glycosylated polypeptide chain containing 214 amino acids and having a molecular mass of 24.3kDa.The OSM is purified by proprietary chromatographic techniques.

Source

Escherichia Coli.

Formulation

OSM protein was lyophilized from a 0.2µm filtered concentrated solution in 1xPBS, pH 7.4.

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 dose-dependent stimulation of the proliferation of rat C6 cells is < 5.0 µg/ml, corresponding to a specific activity of > 200 units/mg.

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Introduction
Oncostatin M is a member of a cytokine family that includes leukemia-inhibitory factor, granulocyte colony-stimulating factor, and interleukin 6. This gene encodes a growth regulator which inhibits the proliferation of a number of tumor cell lines. It regulates cytokine production, including IL-6, G-CSF and GM-CSF from endothelial cells.
Synonyms
Oncostatin-M, OSM, OncoM.
Physical Appearance
Sterile Filtered White lyophilized (freeze-dried) powder.
Stability
Lyophilized Oncostatin M although stable at room temperature for 3 weeks, should be stored desiccated below -18°C. Upon reconstitution Oncostatin should be stored at 4°C between 2-7 days and for future use below -18°C.For long term storage it is recommended to add a carrier protein (0.1% HSA or BSA).Please prevent freeze-thaw cycles.
Solubility
It is recommended to reconstitute the lyophilized Oncostatin M in sterile 18MΩ-cm H2O not less than 100µg/ml, which can then be further diluted to other aqueous solutions.
Amino Acid Sequence
KRGCSSSSPK LLSQLKSQAN ITGNTASLLE PYILHQNLNT LTLRAACTEH PVAFPSEDML RQLSKPDFLS TVHATLGRVW HQLGAFRQQF PKIQDFPELE RARQNIQGIR NNVYCMARLL HPPLEIPEPT QADSGTSRPT TTAPGIFQIK IDSCRFLWGY HRFMGSVGRV FEEWGDGSRR SR RHSPLWAW LKGDHRIRPS RSSQSAMLRS LVPR.

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-9 Rat Recombinant

GAF (Glia-activating factor), HBGF-9, MGC119914, MGC119915, FGF-9.

Product # :

CYT-558

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Description

Rat FGF9 Recombinant produced in E.Coli is a single, non-glycosylated, polypeptide chain containing 207 amino acids and having a molecular mass of 23.3kDa.The FGF-9 Mouse Recombinant is purified by proprietary chromatographic techniques.

Source

Escherichia Coli.

Formulation

The FGF-9 was lyophilized from a concentrated (1mg/ml) sterile solution containing 10mM NaP, pH-7.5 &, 75mM Ammonium Sulfate.

Purity

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

Biological Activity

The ED50, calculated by the dose-dependant proliferation of BAF3 cells expressing FGF receptors (measured by 3H-thymidine uptake) is <0.5 ng/ml, corresponding to a specific activity of 2,000,000 Units/mg.

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Introduction
Rat and mouse FGF-9 show a very high homology to human FGF-9. The transcripts for FGF-9 have been found in brain and in kidney tissue. Fibroblast Growth Factor-9 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. FGF9 was isolated as a secreted factor that exhibits a growth-stimulating effect on cultured glial cells. In nervous system, this protein is produced mainly by neurons and may be important for glial cell development. Expression of the mouse homolog of this gene was found to be dependent on Sonic hedgehog (Shh) signaling. Mice lacking the homolog gene displayed a male-to-female sex reversal phenotype, which suggested a role in testicular embryogenesis Fibroblast Growth Factor 9 may have a role in glial cell growth and differentiation during development, gliosis during repair and regeneration of brain tissue after damage, differentiation and survival of neuronal cells, and growth stimulation of glial tumors.
Synonyms
GAF (Glia-activating factor), HBGF-9, MGC119914, MGC119915, FGF-9.
Physical Appearance
Sterile Filtered White lyophilized (freeze-dried) powder.
Stability
Lyophilized Rat Fibroblast Growth Factor-9 although stable at room temperature for 3 weeks, should be stored desiccated below -18°C. Upon reconstitution FGF9 Rat 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 Rat FGF-9 in sterile 18MΩ-cm H2O not less than 100µg/ml, which can then be further diluted to other aqueous solutions.
Amino Acid Sequence
MPLGEVGSYFG VQDAVPFGNV PVLPVDSPVL LNDHLGQSEA GGLPRGPAVT DLDHLKGILR RRQLYCRTGF HLEIFPNGTI QGTRKDHSRF GILEFISIAV GLVSIRGVDS GLYLGMNEKG ELYGSEKLTQ ECVFREQFEE NWYNTYSSNL YKHVDTGRRY YVALNKDGTP REGTRTKRHQ KFTHFLPRPV DPDKVPELYK DILSQS.
Background
What is the molecular weight/Mw of FGF9 Protein?
FGF9 Protein has a total Mw of 23.3kDa.

What is the source or expression system of FGF9 Protein?
Escherichia Coli.

What is the Purity of FGF9 Protein?
FGF9 Protein is >95% pure as determined by SDS-PAGE.

What is the Biological Activity of FGF9 Protein?
The ED50, calculated by the dose-dependant proliferation of BAF3 cells expressing FGF receptors (measured by 3H-thymidine uptake) is <0.5 ng/ml, corresponding to a specific activity of 2,000,000 Units/mg.

What is the amino acid sequence of FGF9 Protein?
MPLGEVGSYFG VQDAVPFGNV PVLPVDSPVL LNDHLGQSEA GGLPRGPAVT DLDHLKGILR RRQLYCRTGF HLEIFPNGTI QGTRKDHSRF GILEFISIAV GLVSIRGVDS GLYLGMNEKG ELYGSEKLTQ ECVFREQFEE NWYNTYSSNL YKHVDTGRRY YVALNKDGTP REGTRTKRHQ KFTHFLPRPV DPDKVPELYK DILSQS.

What applications can FGF9 Protein be used in?
FGF9 Protein can probably be used in western blot, ELISA and Lateral Flow.

What is the endotoxin level for FGF9 Protein?
The endotoxin level is minimal, FGF9 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:

Inhibitor of Growth Family, Member 1 Human Recombinant

Inhibitor Of Growth Family, Member 1, Growth Inhibitory Protein ING1, Tumor Suppressor ING1, Growth Inhibitor ING1, Inhibitor Of Growth Protein 1, Inhibitor Of Growth 1, P24ING1c,P33ING1b, P47ING1a, P33ING1, P33, P47, ING1 .

Product # :

PRO-2130

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Description

ING1 Human Recombinant produced in E.Coli is a single, non-glycosylated polypeptide chain containing 302 amino acids (1-279 a.a) and having a molecular mass of 34.3kDa.ING1 is fused to a 23 amino acid His-tag at N-terminus & purified by proprietary chromatographic techniques.

Source

Escherichia Coli.

Formulation

ING1 protein solution (1mg/ml) containing 20mM Tris-HCl buffer (pH 8.0) and 10% glycerol.

Purity

Greater than 90.0% as determined by SDS-PAGE.

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Introduction
Inhibitor of Growth Family Member 1, also known as ING1 is a tumor suppressor protein which is able to induce cell growth arrest and apoptosis. ING1 is a nuclear protein which physically act together with the tumor suppressor protein TP53 and is a component of the p53 signaling pathway. In addition, Reduced expression and rearrangement of ING1 have been identified in various cancers. Multiple alternatively spliced transcript variants encoding distinct isoforms have been described for ING1.
Synonyms
Inhibitor Of Growth Family, Member 1, Growth Inhibitory Protein ING1, Tumor Suppressor ING1, Growth Inhibitor ING1, Inhibitor Of Growth Protein 1, Inhibitor Of Growth 1, P24ING1c,P33ING1b, P47ING1a, P33ING1, P33, P47, ING1 .
Physical Appearance
Sterile Filtered clear solution.
Stability
Store at 4°C if entire vial will be used within 2-4 weeks. Store, frozen at -20°C for longer periods of time. For long term storage it is recommended to add a carrier protein (0.1% HSA or BSA).Avoid multiple freeze-thaw cycles.
Amino Acid Sequence
MGSSHHHHHH SSGLVPRGSH MGSMLSPANG EQLHLVNYVE DYLDSIESLP FDLQRNVSLM REIDAKYQEI LKELDECYER FSRETDGAQK RRMLHCVQRA LIRSQELGDE KIQIVSQMVE LVENRTRQVD SHVELFEAQQ ELGDTAGNSG KAGADRPKGE AAAQADKPNS KRSRRQRNNE NRENASSNHD HDDGASGTPK EKKAKTSKKK KRSKAKAERE ASPADLPIDP NEPTYCLCNQ VSYGEMIGCD NDECPIEWFH FSCVGLNHKP KGKWYCPKCR GENEKTMDKA LEKSKKERAY NR.

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:

Lactoferrin Human (Breast Milk)

Lactotransferrin, Lactoferrin, Growth-inhibiting protein 12, Talalactoferrin, LTF, GIG12, LF, HLF2, Neutrophil Lactoferrin.

Product # :

PRO-1590

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Quantity :

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description
source
formulation
purity
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Description

The Human Lactoferrin produced from Human breast milk has a molecular mass of 76.165kDa (calculated without glycosylation) containing 691 amino acid residues.

Source

Human breast milk.

Formulation

LTF protein filtered (0.4µm) and lyophilized in 0.5 mg/ml in 0.05M phosphate buffer and 0.075M NaCl, pH 7.4.

Purity

Greater than 95.0% as determined by SDS-PAGE.

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Introduction
Lactoferrin is a glycoprotein that belongs to the transferrin family of iron binding proteins. It is found in human breast milk as well as most epithelial surface secretions including tears, nasogastric, saliva, and bronchial. Lactoferrin binds 2 molecules of iron with very high affinity. Lactoferrin inhibits bacterial growth by withholding iron, its N-terminal region is an antimicrobial peptide. Lactotransferrin acts synergistically with lysozyme to potentiate the activity of both proteins. The multifunctional protein lactoferrin has many physiological possible roles. It is often referred to as an innate defense protein and frequently serves as the first line of defense in protection against pathogens. It has been shown to have the ability to bind iron, it is a natural anti-bacterial, anti-fungal and anti-viral, it is an antioxidant and it also has immunomodulatory properties. It has many beneficial properties, which make it a good candidate for a number of product applications. Considerable research is currently going on to explain the various suggested biological functions of lactoferrin.
Synonyms
Lactotransferrin, Lactoferrin, Growth-inhibiting protein 12, Talalactoferrin, LTF, GIG12, LF, HLF2, Neutrophil Lactoferrin.
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 0.5 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.
Amino Acid Sequence
GRRRSVQWCA VSQPEATKCF QWQRNMRKVR GPPVSCIKRD SPIQCIQAIA ENRADAVTLD GGFIYEAGLA PYKLRPVAAE VYGTERQPRT HYYAVAVVKK GGSFQLNELQ GLKSCHTGLR RTAGWNVPIG TLRPFLNWTG PPEPIEAAVA RFFSASCVPG ADKGQFPNLC RLCAGTGENK CAFSSQEPYF SYSGAFKCLR DGAGDVAFIR ESTVFEDLSD EAERDEYELL CPDNTRKPVD KFKDCHLARV PSHAVVARSV NGKEDAIWNL LRQAQEKFGK DKSPKFQLFG SPSGQKDLLF KDSAIGFSRV PPRIDSGLYL GSGYFTAIQN LRKSEEEVAA RRARVVWCAV GEQELRKCNQ WSGLSEGSVT CSSASTTEDC IALVLKGEAD AMSLDGGYVY TAGKCGLVPV LAENYKSQQS SDPDPNCVDR PVEGYLAVAV VRRSDTSLTW NSVKGKKSCH TAVDRTAGWN IPMGLLFNQT GSCKFDEYFS QSCAPGSDPR SNLCALCIGD EQGENKCVPN SNERYYGYTG AFRCLAENAG DVAFVKDVTV LQNTDGNNNE AWAKDLKLAD FALLCLDGKR KPVTEARSCH LAMAPNHAVV SRMDKVERLK QVLLHQQAKF GRNGSDCPDK FCLFQSETKN LLFNDNTECL ARLHGKTTYE KYLGPQYVAG ITNLKKCSTS PLLEACEFLR K.

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-Basic Bovine Recombinant

HBGH-2, HBGF-2, Prostatropin, FGF-2, FGB-b.

Product # :

CYT-288

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Description

FGF-2 Bovine Recombinant produced in E.Coli is a single, non-glycosylated, polypeptide chain containing 155 amino acids and having a molecular mass of 17250 Dalton. The Fibroblast Growth Factor 2 is purified by proprietary chromatographic techniques.

Source

Escherichia Coli.

Formulation

The FGF-b Bovine was lyophilized from a concentrated (1mg/ml) sterile solution containing 1% HSA.

Purity

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

Biological Activity

The ED₅₀, measured in a mitogenic assay using quiescent NR6R-3T3 fibroblasts was found to be <0.1ng/ml, corresponding to a specific activity of 3 x 10⁶Units/mg.

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Introduction
FGF-basic is a member of the fibroblast growth factor (FGF) family. FGF family members bind heparin and possess broad mitogenic and angiogenic activities. This protein has been implicated in diverse biological processes, such as limb and nervous system development, wound healing, and tumor growth. The mRNA for this gene contains multiple polyadenylation sites, and is alternatively translated from AUG and non-AUG (CUG) initiation codons resulting in five different isoforms with distinct properties. The CUG-initiated isoforms are localized in the nucleus and are responsible for the intracrine effect, whereas, the AUG-initiated form is mostly cytosolic and is responsible for the paracrine and autocrine effects of this FGF.
The heparin-binding growth factors are angiogenic agents in vivo and are potent mitogens for a variety of cell types in vitro. there are differences in the tissue distribution and concentration of these 2 growth factors.
Synonyms
HBGH-2, HBGF-2, Prostatropin, FGF-2, FGB-b.
Physical Appearance
Sterile Filtered White lyophilized (freeze-dried) powder.
Stability
Lyophilized Fibroblast Growth Factor 2 Bovine although stable at room temperature for 3 weeks, should be stored desiccated below -18°C. Upon reconstitution FGF-b Bovine Recombinant 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 Fibroblast Growth Factor-2 Bovine 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-Ala-Ala-Gly-Ser.
Background
What is the molecular weight/Mw of FGF-2 BOVINE Protein?
FGF-2 BOVINE Protein has a total Mw of 17.5kDa.

What is the source or expression system of FGF-2 BOVINE Protein?
Escherichia Coli.

What is the Purity of FGF-2 BOVINE Protein?
FGF-2 BOVINE Protein is >97% pure as determined by SDS-PAGE.

What is the Biological Activity of FGF-2 BOVINE Protein?
The ED50, measured in a mitogenic assay using quiescent NR6R-3T3 fibroblasts was found to be <0.1ng/ml, corresponding to a specific activity of 3 x 106 Units/mg.

What is the amino acid sequence of FGF-2 BOVINE Protein?
FGF-2 BOVINE Protein is composed from 155 amino acids.

What applications can FGF-2 BOVINE Protein be used in?
FGF-2 BOVINE Protein can probably be used in western blot, ELISA and Lateral Flow.

What is the endotoxin level for FGF-2 BOVINE Protein?
The endotoxin level is minimal, FGF-2 BOVINE Protein was purified using conventional chromatography techniques.
Protein content
Protein quantitation was carried out by two independent methods:1. UV spectroscopy at 280 nm using the absorbency value of 0.85 as the extinction coefficient for a 0.1% (1mg/ml) solution. This value is calculated by the PC GENE computer analysis program of protein sequences (IntelliGenetics).2. Analysis by RP-HPLC, using a calibrated solution of FGF-2 Bovine 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 Quadruple Antagonist Pegylated Human Recombinant

Product # :

CYT-1251

Price :

Quantity :

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purity
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Description

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

Source

Escherichia coli.

Formulation

The Human 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

Human 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 activity is 6-8 fold lower than the non-pegylated human leptin antagonist but in vivo it has profound weight gain effect (as compared to the non-pegylated human leptin antagonist), resulting mainly from increased food intake. The in vivo activity of human pegylated super leptin antagonist was compared to that of human pegylated leptin antagonist is 9-27 fold higher.

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Physical Appearance
White lyophilized (freeze-dried) powder.
Stability
Lyophilized Human 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 Human pegylated leptin antagonist and filter sterilization Human 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 Human Leptin Pegylated Quadruple Antagonist in sterile water or sterile 0.4% NaHCO3 adjusted to pH 8-9, not less than 100µg/ml, which can then be further diluted with other aqueous solutions.
Background
Leptin is a~16 kDa protein which is encoded by the obese gene. Leptin is a hormone which participates in regulating body weight, reproductive function and metabolism. leptin is expressed predominantly by adipocytes, which supports the idea that body weight is sensed as the total mass of fat in the body. Smaller amounts of leptin are also secreted by cellsin the epithelium of the stomach and in the placenta. Leptin receptors are highly expressed in areas of the hypothalamus which regulates body weight, as well as in T lymphocytes and vascular endothelial cells.
Protein content
Protein quantization was carried out by UV spectroscopy at 280 nm using the absorbency value of 0.88 as the extinction coefficient for a 0.1% (1mg/ml) solution at pH 8.0. This value is calculated by the PC GENE computer analysis program of protein sequences (IntelliGenetics).

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

Description:

Erythropoietin-alpha Human Recombinant, HEK

Erythropoietin-Alpha, EPO-a, EPO-alpha, Epoetin, EP, MGC138142.

Product # :

CYT-083

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Description

EPO-a Human Recombinant produced in HEK cells is a glycosylated monomer, having a total molecular weight of 36kDa.The EPO-alpha is purified by proprietary chromatographic techniques.

Source

HEK.

Formulation

The EPO-alpha was lyophilized from 1mg/ml in 1xPBS.

Purity

Greater than 95% as obsereved by SDS-PAGE.

Biological Activity

The specific activity was determined by the dose-dependent stimulation of the proliferation of human TF-1 cells (human erythroleukemic indicator cell line) and is typically 0.5-2.5ng/ml, corresponding to a specific activity of 400,000-2,000,000 units/mg.

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Introduction
This gene is a member of the EPO/TPO family and encodes a secreted, glycosylated cytokine composed of four alpha helical bundles. The protein is found in the plasma and regulates red cell production by promoting erythroid differentiation and initiating hemoglobin synthesis. This protein also has neuroprotective activity against a variety of potential brain injuries and antiapoptotic functions in several tissue types.
Synonyms
Erythropoietin-Alpha, EPO-a, EPO-alpha, Epoetin, EP, MGC138142.
Physical Appearance
Sterile Filtered White lyophilized (freeze-dried) powder.
Stability
Lyophilized EPO-alpha although stable at room temperature for 3 weeks, should be stored desiccated below -18°C. Upon reconstitution EPO-alpha 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 EPO-alpha in sterile water not less than 100µg/ml, which can then be further diluted to other aqueous solutions.
Background
What is the molecular weight/Mw of EPOETIN Protein?
EPOETIN Protein has a total Mw of 36kDa.

What is the source or expression system of EPOETIN Protein?
HEK.

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

What is the Biological Activity of EPOETIN Protein?
The specific activity was determined by the dose-dependent stimulation of the proliferation of human TF-1 cells (human erythroleukemic indicator cell line) and is typically 0.5-2.5ng/ml, corresponding to a specific activity of 400,000-2,000,000 units/mg.

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

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

Vascular Endothelial Growth Factor Rat Recombinant, His Tag

VEGF-A, Vascular permeability factor, VPF, VEGF.

Product # :

CYT-854

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Shipped with Ice Packs

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Description

VEGF Rat Recombinant produced in E.Coli is a single, non-glycosylated polypeptide chain containing 145 amino acids (206-325 a.a) and having a molecular mass of 16.7kDa.VEGF is fused to a 25 amino acid His-tag at N-terminus & purified by proprietary chromatographic techniques.

Source

Escherichia Coli.

Formulation

VEGF protein solution (0.25mg/ml) containing Phosphate buffered saline (pH7.4) and 50% glycerol.

Purity

Greater than 90.0% as determined by SDS-PAGE.

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

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 RANK Ligand Human Recombinant, GST tag

Soluble Receptor Activator of NFkB Ligand, TNFSF11, TRANCE, TNF-related activation-induced cytokine, OPGL, ODF, Osteoclast differentiation factor, Tumor necrosis factor ligand superfamily member 11, Receptor activator of nuclear factor kappa B ligand, RANKL, Osteoprotegerin ligand, CD254 antigen, sRANKL, sOdf, hRANKL2.

Product # :

CYT-631

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Description

RANKL Human Recombinant fused to GST tag produced in E.Coli is a single, non-glycosylated polypeptide having a molecular mass of 47 kDa. RANKL is purified by proprietary chromatographic techniques.

Source

Escherichia Coli.

Formulation

The soluble RANKL protein solution contains 1mM EDTA and PBS pH-7.4.

Purity

Greater than 95.0% as determined by SDS-PAGE.

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Introduction
RANKL binds to tnfrsf11b/opg and to tnfrsf11a/rank. Osteoclast differentiation and activation factor. Augments the ability of dendritic cells to stimulate naive t-cell proliferation. May be an important regulator of interactions between t-cells and dendritic cells and may play a role in the regulation of the t-cell-dependent immune response. sRANKL may also play an important role in enhanced bone-resorption in humoral hypercalcemia of malignancy. By injecting soluble RANKL, novel osteopenia model mice were established in only 50 hours. Degree of bone loss can be controlled by changing doses of sRANKL. RANKL can be used in establishing osteopenia model for in vivo screening of drugs for osteoporosis, determination of effect and mechanism, evaluation of bone anabolic drugs.
Synonyms
Soluble Receptor Activator of NFkB Ligand, TNFSF11, TRANCE, TNF-related activation-induced cytokine, OPGL, ODF, Osteoclast differentiation factor, Tumor necrosis factor ligand superfamily member 11, Receptor activator of nuclear factor kappa B ligand, RANKL, Osteoprotegerin ligand, CD254 antigen, sRANKL, sOdf, hRANKL2.
Physical Appearance
Sterile Filtered colorelss 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:

Galectin-16 Human Recombinant

Lectin Galactoside Binding Soluble 16, Galectin16, Galectin-16, LGALS-16, LGALS16.

Product # :

CYT-993

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Description

LGALS16 Human Recombinant produced in E.Coli is a non-glycosylated polypeptide chain having a molecular mass of 16kDa.The LGALS16 also appears as a homodimer and therefore a 32kDa band is observed as well. LGALS16 is fused to a 6xHis tag at n-terminal and purified using standard chromatography techniques.

Source

Escherichia Coli.

Formulation

1x PBS and 25mM arginine.

Purity

Greater than 95.0% as determined by SDS-PAGE.

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Introduction
Galectin-16 (LGALS16) binds lactose with high affinity. LGALS16 is a strong inducer of T-cell apoptosis.
Synonyms
Lectin Galactoside Binding Soluble 16, Galectin16, Galectin-16, LGALS-16, LGALS16.
Physical Appearance
Sterile Filtered colorless solution.
Stability
The Recombinant LGALS16 protein although stable at 4°C for 1 week, should be stored 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.
Background
What is the molecular weight/Mw of LGALS16 HUMAN Protein?
LGALS16 HUMAN Protein has a total Mw of 16kDa.

What is the source or expression system of LGALS16 HUMAN Protein?
Escherichia Coli.

What is the Purity of LGALS16 HUMAN Protein?
LGALS16 HUMAN Protein is >95% pure as determined by SDS-PAGE.

What is the Biological Activity of LGALS16 HUMAN Protein?
The biological functionality of LGALS16 HUMAN Protein will be determined in the future.

What applications can LGALS16 HUMAN Protein be used in?
LGALS16 HUMAN Protein can probably be used in western blot, ELISA and Lateral Flow.

What is the endotoxin level for LGALS16 HUMAN Protein?
The endotoxin level is minimal, LGALS16 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:

Galectin-7 Human Recombinant

Galectin-7, Gal-7, HKL-14, PI7, p53-induced gene 1 protein, LGALS7, PIG1, LGALS7B, GAL7, LGALS7A.

Product # :

CYT-016

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Quantity :

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Shipped at Room temp

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source
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Description

Galectin-7 Human Recombinant produced in E.Coli is a single, non-glycosylated, Polypeptide chain containing 136 amino acids and having a molecular mass of 15kDa.The LGALS7 is purified by proprietary chromatographic techniques.

Source

Escherichia Coli.

Formulation

LGALS7 was lyophilized from a concentrated (1mg/ml) solution in 20mM Tris, 150mM NaCl, 1mM EDTA and 5% Trehalose, pH 8.

Purity

Greater than 95.0% as determined by SDS-PAGE.

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Introduction
Galectins are a family of animal lectins with an affinity for beta-galactosides. This family has at least 14 identified members. Galectins share similarities in the CRD (the carbohydrate recognition domain). Galectins are synthesized as cytosolic proteins. Though localized principally in the cytoplasm and lacking a classical signal peptide, galectins can also be stimulated to secretion by non-classical pathways or alternatively targeted to the nucleus. Galectins are involved in modulating cell-cell and cell-matrix interactions. Human Galectin-7 belongs to the prototypical Galectins containing a single CRD, which is initially identified in human epidermis as a monomer. The Galectin-7 expression is induced by tumor suppressor protein p53 and associated with apoptosis. Galectin-7 is a pro-apoptotic protein which functions intracellularlly upstream of JNK activation and mitochondrial cytochrome c release. The correlation of Galectin-7 with the UV-induced apoptosis of keratinocytes presents a critical mechanism in the maintenance of epidermal homeostasis. Human Galectin-7 is localized in both nucleus and cytoplasm.
Synonyms
Galectin-7, Gal-7, HKL-14, PI7, p53-induced gene 1 protein, LGALS7, PIG1, LGALS7B, GAL7, LGALS7A.
Physical Appearance
Sterile Filtered White lyophilized (freeze-dried) powder.
Stability
Lyophilized LGALS7 although stable at room temperature for 3 weeks, should be stored desiccated below -18°C. Upon reconstitution Galectin-7 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 Galectin-7 in sterile distilled H2O not less than 100µg/ml, which can then be further diluted to other aqueous solutions.
Amino Acid Sequence
MSNVPHKSSLPEGIRPGTVLRIRGLVPPNASRFHVNLLCGEEQGSDAALHFNP
RLDTSEVVFNSKEQGSWGREERGPGVPFQRGQPFEVLIIASDDGFKAVVGDAQ
YHHFRHRLPLARVRLVEVGGDVQLDSVRIF
Background
What is the molecular weight/Mw of LGALS7 HUMAN Protein?
LGALS7 HUMAN Protein has a total Mw of 15kDa.

What is the source or expression system of LGALS7 HUMAN Protein?
Escherichia Coli.

What is the Purity of LGALS7 HUMAN Protein?
LGALS7 HUMAN Protein is >95% pure as determined by SDS-PAGE.

What is the Biological Activity of LGALS7 HUMAN Protein?
The biological functionality of LGALS7 HUMAN Protein will be determined in the future.

What is the amino acid sequence of LGALS7 HUMAN Protein?
MSNVPHKSSLPEGIRPGTVLRIRGLVPPNASRFHVNLLCGEEQGSDAALHFNP
RLDTSEVVFNSKEQGSWGREERGPGVPFQRGQPFEVLIIASDDGFKAVVGDAQ
YHHFRHRLPLARVRLVEVGGDVQLDSVRIF

What applications can LGALS7 HUMAN Protein be used in?
LGALS7 HUMAN Protein can probably be used in western blot, ELISA and Lateral Flow.

What is the endotoxin level for LGALS7 HUMAN Protein?
The endotoxin level is minimal, LGALS7 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:

Leptin Mutant D23L Human Recombinant

OB Protein, Obesity Protein, OBS, Obesity factor.

Product # :

CYT-1243

Price :

Quantity :

Shipping Method :

Shipped at Room temp

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source
formulation
purity
biological activity
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Description

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

Source

Escherichia coli.

Formulation

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

Purity

Greater than 95.0% as determined by:

(a) Gel filtration analysis.

(b) Analysis by SDS-PAGE.

Biological Activity

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

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Synonyms
OB Protein, Obesity Protein, OBS, Obesity factor.
Physical Appearance
White lyophilized (freeze-dried) powder.
Stability
Lyophilized Human Leptin Mutant D23L although stable at room temperature for several weeks, should be stored desiccated below -18°C. Upon reconstitution at > 0.1 Leptin mutant mg/ml and up to 2mM and filter sterilization LEP mutant can be stored at 4°C or even room temperature for several weeks making it suitable for long term infusion studies using osmotic pumps. At lower concentration addition of a carrier protein (0.1% HSA or BSA) is suggested. Please prevent freeze-thaw cycles.
Solubility
It is recommended to reconstitute the lyophilized Leptin Mutant in sterile water or sterile 0.4% NaHCO3adjusted to pH 8-9, not less than 100µg/ml, which can then be further diluted with other aqueous solutions.
Amino Acid Sequence
The sequence of the first five N-terminal amino acids of recombinant human leptin was determined and was found to be Ala-Val-Pro-Ile-Gln.
Background
Leptin’s main part is to regulate long-term energy balance. Leptin is a hormone which mainly produced by adipocytes and is encoded by the LEP gene. Leptin effects mainly on leptin receptors in the cell mambrane of various cells in the human body. The leptin receptor is found on a wide range of cell types. The leptin receptor is a single-transmembrane-domain type 1 cytokine receptor. leptin levels influence satiety, appetite and triggers behaviors which lead to energy savings High leptin levels are interpreted by the brain that energy reserves are high, whereas low leptin levels means that energy reserves are low, in the process adapting the organism to starvation through a variety of metabolic, neurobiochemical, endocrine and behavioral change.

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

Description:

Fibroblast Growth Factor-Acidic Rat Recombinant

Fibroblast growth factor 1, FGF-1, Acidic fibroblast growth factor, aFGF, binding growth factor 1, HBGF-1, Fgf1, Fgfa, HBGF1.

Product # :

CYT-075

Price :

Quantity :

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Shipped at Room temp

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Description

Fibroblast Growth Factor-acidic Rat Recombinant (FGF-1) produced in E.Coli is a single, non-glycosylated, polypeptide chain containing 141 amino acids and having a molecular mass of 15.9 kDa.The FGF acidic is purified by proprietary chromatographic techniques.

Source

Escherichia Coli.

Formulation

Lyophilized at a concentration of 1 mg/ml in 5mM Na2PO4, pH-7.5 and 50mM NaCl.

Purity

Greater than 98.0% as determined by SDS-PAGE.

Biological Activity

The ED50 as determined by the dose-dependent proliferation of mouse BALB/c 3T3 cells, is less than 0.2ng/ml corresponding to a Specific Activity of 5x10⁶IU/mg.

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Introduction
Acidic fibroblast growth factor 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. This protein functions as a modifier of endothelial cell migration and proliferation, as well as an angiogenic factor. It acts as a mitogen for a variety of mesoderm- and neuroectoderm-derived cells in vitro, thus is thought to be involved in organogenesis. Three alternatively spliced variants encoding different isoforms have been described. The binding growth factors are angiogenic agents in vivo and are potent mitogens for a variety of cell types in vitro. There are differences in the tissue distribution and concentration of these 2 growth factors.
Synonyms
Fibroblast growth factor 1, FGF-1, Acidic fibroblast growth factor, aFGF, binding growth factor 1, HBGF-1, Fgf1, Fgfa, HBGF1.
Physical Appearance
Sterile Filtered White lyophilized (freeze-dried) powder.
Stability
Lyophilized Fibroblast Growth Factor-1 although stable at room temperature for 3 weeks, should be stored desiccated below -18°C. Upon reconstitution FGF-a 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 Fibroblast Growth Factor-acidic in sterile 18MΩ-cm H2O not less than 100µg/ml, which can then be further diluted to other aqueous solutions.
Amino Acid Sequence
MFNLPLGNYK KPKLLYCSNG GHFLRILPDG TVDGTRDRSD QHIQLQLSAE SAGEVYIKGT ETGQYLAMDT EGLLYGSQTP NEECLFLERL EENHYNTYTS KKHAEKNWFV GLKKNGSCKR GPRTHYGQKA ILFLPLPVSS D.
Background
What is the molecular weight/Mw of FGF 1 Protein?
FGF 1 Protein has a total Mw of 15.9kDa.

What is the source or expression system of FGF 1 Protein?
Escherichia Coli.

What is the Purity of FGF 1 Protein?
FGF 1 Protein is >98% pure as determined by SDS-PAGE.

What is the Biological Activity of FGF 1 Protein?
The ED50 as determined by the dose-dependent proliferation of mouse BALB/c 3T3 cells, is less than 0.2ng/ml corresponding to a Specific Activity of 5x106IU/mg.

What is the amino acid sequence of FGF 1 Protein?
MFNLPLGNYK KPKLLYCSNG GHFLRILPDG TVDGTRDRSD QHIQLQLSAE SAGEVYIKGT ETGQYLAMDT EGLLYGSQTP NEECLFLERL EENHYNTYTS KKHAEKNWFV GLKKNGSCKR GPRTHYGQKA ILFLPLPVSS D.

What applications can FGF 1 Protein be used in?
FGF 1 Protein can probably be used in western blot, ELISA and Lateral Flow.

What is the endotoxin level for FGF 1 Protein?
The endotoxin level is minimal, FGF 1 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:

Stem Cell Factor Canine Recombinant

Kit ligand Precursor, C-kit ligand, SCF, Mast cell growth factor, MGF, SF, KL-1, Kitl, DKFZp686F2250.

Product # :

CYT-194

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Quantity :

Shipping Method :

Shipped at Room temp

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Description

Stem Cell Factor Canine Recombinant produced in E.Coli is a single, non-glycosylated polypeptide chain containing 165 amino acids and having a molecular mass of 18.4kDa Dalton. The SCF 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 HPLC and SDS-PAGE.

Biological Activity

Fully biologically active when compared to standard. The ED50 as calculated by the dose-dependent stimulation of the proliferation of human TF-1 cells is less than 2.0ng/ml, corresponding to a specific activity of 5,000,000IU/mg.

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Introduction
Stem cell factor / KIT ligand (SCF) is a cytokine which binds CD117(c-Kit). SCF is also known as "steel factor" or "c-kit ligand". SCF exists in two forms, cell surface bound SCF and soluble (or free) SCF. Soluble SCF is produced by the cleavage of surface bound SCF by metalloproteases. SCF is a growth factor important for the survival, proliferation, and differentiation of hematopoietic stem cells and other hematopoietic progenitor cells. One of its roles is to change the BFU-E (burst-forming unit-erythroid) cells, which are the earliest erythrocyte precursors in the erythrocytic series, into the CFU-E (colony-forming unit-erythroid).
Synonyms
Kit ligand Precursor, C-kit ligand, SCF, Mast cell growth factor, MGF, SF, KL-1, Kitl, DKFZp686F2250.
Physical Appearance
Sterile Filtered White lyophilized (freeze-dried) powder.
Stability
Lyophilized SCF although stable at room temperature for 3 weeks, should be stored desiccated below -18°C. Upon reconstitution SCF 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 Stem Cell Factor in sterile 18MΩ-cm H2O not less than 100µg/ml, which can then be further diluted to other aqueous solutions.
Amino Acid Sequence
KGICGKRVTD DVKDVTKLVA NLPKDYKIAL KYVPGMDVLP SHCWISVMVE QLSVSLTDLL DKFSNISEGL SNYSIIDKLV KIVDDLVECT EGYSFENVKK APKSPELRLF TPEEFFRIFN RSIDAFKDLE TVASKSSECV VSSTLSPDKD SRVSVTKPFM LPPVA

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 Mouse Recombinant

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

Product # :

CYT-143

Price :

Quantity :

Shipping Method :

Shipped with Ice Packs

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Description

TGF-β 3 Mouse Recombinant produced in E.Coli is a disulfide-linked homodimeric, non-glycosylated, polypeptide chain containing two 113 amino acid chains and having a total molecular mass of 25.7kDa. The TGF-β 3 is purified by standard chromatographic techniques.

Source

Escherichia Coli.

Formulation

The Mouse TGFB3 protein solution contains 20% Ethanol and 10mM Acetic acid.

Purity

Greater than 95.0% as determined by SDS-PAGE.

Biological Activity

The activity is determined by the ability to induce chondrogenic differentiation.

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Introduction
Transforming growth factor betas (TGF Betas) mediate many cell-cell interactions that occur during embryonic development. Three TGF Betas have been identified in mammals. TGF Beta 1, TGF Beta 2 and TGF Beta 3 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-beta3, TGFB3, ARVD, FLJ16571, TGF-beta3.
Physical Appearance
Sterile Filtered clear solution.
Stability
Mouse TGF-beta 3 although stable at room temperature for 3 weeks, should be stored at 4°C.For long term storage it is recommended to add a carrier protein (0.1% HSA or BSA).
Amino Acid Sequence
MALDTNYCFRN LEENCCVRPL YIDFRQDLGW KWVHEPKGYY ANFCSGPCPY LRSADTTHST VLGLYNTLNP EASASPCCVP QDLEPLTILY YVGRTPKVEQ LSNMVVKSCK CS.
Protein content
Protein quantitation was carried out by two independent methods:1. UV spectroscopy at 280 nm using the absorbency value of 1.718 as the extinction coefficient for a 0.1% (1mg/ml) solution. This value is calculated by the PC GENE computer analysis program of protein sequences (IntelliGenetics). 2. Analysis by RP-HPLC, using a calibrated solution of TGF-b 3 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:

Inhibin-Alpha A Chain Human Recombinant

Inhibin-Alpha, A-Inhibin Subunit, Inhibin Alpha Chain, INHA.

Product # :

HOR-293

Price :

Quantity :

Shipping Method :

Shipped with Ice Packs

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Description

Inhibin-Alpha A chain Human Recombinant produced in E.Coli is a single, non-glycosylated, polypeptide chain containing 134 amino acids fragment (233-366) and having an amino-terminal hexahistidine tag, having a total molecular weight of 19.2 kDa. The Inhibin-Alpha A chain is purified by standard chromatographic techniques.

Source

Escherichia Coli.

Formulation

Inhibin-A alpha chain is supplied in 20mM Tris HCl (pH-8), 5mM EDTA and 50% glycerol.

Purity

Greater than 95.0% as determined by SDS-PAGE.

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Introduction
Inhibins are dimeric peptide hormones produced by female ovarian granulose cells and male Sertoli cells as well as a variety of other tissues. Inhibins have two isoforms, A and B, with the same alpha subunit but different beta subunits. Inhibin A is a dimer of alpha and beta A subunits, inhibin B is a dimer of alpha and beta B subunits.
Inhibins are thought to inhibit the production of follicle-stimulating hormone (FSH) by the pituitary gland. In addition, Inhibins are also thought to play a role in the control of gametogenesis, and embryonic and fetal development.
Synonyms
Inhibin-Alpha, A-Inhibin Subunit, Inhibin Alpha Chain, INHA.
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:

Growth Differentiation Factor-3 Human Recombinant

Growth Differentiation Factor 3, Growth/Differentiation Factor 3 , MCOPCB6, MCOP7, GDF-3, KFS3.

Product # :

CYT-694

Price :

Quantity :

Shipping Method :

Shipped at Room temp

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Description

GDF3 Human Recombinant produced in E.Coli is a single, non-glycosylated, polypeptide chain containing 124 amino acids and having a total molecular mass of 14.15 kDa.GDF3 is fused to a 10 amino acid His Tag at N-terminus and purified by proprietary chromatographic techniques.

Source

Escherichia Coli.

Formulation

The protein was lyophilized from a concentrated solution (0.5mg/ml) containing 30mM Acetate buffer pH-4.

Purity

Greater than 90.0% as determined by SDS-PAGE.

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Introduction
GDF3 is a member of the TGF-beta superfamily though it does not show similarity pattern of conserved cysteine residues. GDF3 is linked to Vg-1 and human BMP-4. GDF3 transcripts are identified mainly in adult bone marrow, spleen, thymus, and adipose tissue. GDF3 expression is upregulated strongly in high-fat-fed C57Bl/6J FABP4/aP2 null mice, which develop obesity but not the related hyperglycemia or hyperinsulinemia characteristic of type II diabetes. GDF3 expression therefore bonds fatty acid metabolism in adipocytes and the expression of a differentiation regulator belonging to the bone morphogenetic proteins.
Synonyms
Growth Differentiation Factor 3, Growth/Differentiation Factor 3 , MCOPCB6, MCOP7, GDF-3, KFS3.
Physical Appearance
Filtered White lyophilized (freeze-dried) powder.
Stability
Lyophilized GDF3 although stable at room temperature for 3 weeks, should be stored desiccated below -18°C. Upon reconstitution GDF3 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 GDF3 in sterile 100mM Acetate buffer pH-4 at a concentration of 0.5mg/ml. For the dilution into higher pH values, it is recommended to dilute the protein to a concentration of 10μg/ml. Please note that in higher concentrations the solubility of GDF3 is limited. The protein is not sterile! Please sterile filter before using it in the cell culture.
Amino Acid Sequence
MKHHHHHHAS AAIPVPKLSC KNLCHRHQLF INFRDLGWHK WIIAPKGFMA NYCHGECPFS LTISLNSSNY AFMQALMHAV DPEIPQAVCI PTKLSPISML YQDNNDNVIL RHYEDMVVDECGCG.
Background
What is the molecular weight/Mw of GDF3 HUMAN Protein?
GDF3 HUMAN Protein has a total Mw of 14.15XkDa.

What is the source or expression system of GDF3 HUMAN Protein?
Escherichia Coli.

What is the Purity of GDF3 HUMAN Protein?
GDF3 HUMAN Protein is >90% pure as determined by SDS-PAGE.

What is the Biological Activity of GDF3 HUMAN Protein?
The biological functionality of GDF3 HUMAN Protein will be determined in the future.

What is the amino acid sequence of GDF3 HUMAN Protein?
MKHHHHHHAS AAIPVPKLSC KNLCHRHQLF INFRDLGWHK WIIAPKGFMA NYCHGECPFS LTISLNSSNY AFMQALMHAV DPEIPQAVCI PTKLSPISML YQDNNDNVIL RHYEDMVVDECGCG.

What applications can GDF3 HUMAN Protein be used in?
GDF3 HUMAN Protein can probably be used in western blot, ELISA and Lateral Flow.

What is the endotoxin level for GDF3 HUMAN Protein?
The endotoxin level is minimal, GDF3 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:

Leptin Antagonist Quadruple Mutant Human Recombinant

Product # :

CYT-353

Price :

Quantity :

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Shipped at Room temp

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Description

Leptin Quadruple Mutant Human Recombinant is a single polypeptide chain containing 146 amino and additional Ala at N-terminus acids and having a Mw of 16 kDa, Human Leptin was mutated, resulting in L39A/D40A/F41A/I42A.Leptin Antagonist Quadruple Mutant was 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 98.0% as determined by:
(a) Gel filtration analysis.
(b) Analysis by SDS-PAGE.

Biological Activity

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

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Physical Appearance
White lyophilized (freeze-dried) powder.
Stability
Lyophilized Leptin Antagonist Quadruple Mutant although stable at room temperature for several weeks, should be stored desiccated below -18°C. Upon reconstitution at > 0.1 Leptin mutant mg/ml and up to 2 mM and filter sterilization LEP mutant can be stored at 4°C or even room temperature for several weeks making it suitable for long term infusion studies using osmotic pumps. At lower concentration addition of a carrier protein (0.1% HSA or BSA) is suggested. Please prevent freeze-thaw cycles.
Solubility
It is recommended to reconstitute the lyophilized Leptin Antagonist Quadruple Mutant 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-Gln.
Protein content
Protein quantitation was carried out by UV spectroscopy at 280 nm using the absorbency value of 0.89 as the extinction coefficient for a 0.1% (1mg/ml) solution at pH 8.0. This value is calculated by the PC GENE computer analysis program of protein sequences (IntelliGenetics).

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

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