Recombinant Human PBEF/Visfatin/NAMPT Protein (RP00724)

Recombinant Human Visfatin/Nampt Protein was determined by SDS-PAGE with Coomassie Blue, showing a band at 60-65 kDa.

Recombinant Human Visfatin/Nampt stimulates cell proliferation of the RPMI 8226 cells. The ED₅₀ for this effect is 1.72‑6.89 ng/mL,corresponding to a specific activity of 1.45×10⁵~5.81×10⁵units/mg.

All(2)|

货号: RP00724

详细信息

种属

Human

表达宿主

E. coli

Calculated MW

55.39 kDa

Observed MW

60-65 kDa

标签

NO-tag

纯度

> 95% by SDS-PAGE.

内毒素

< 1 EU/μg of the protein by LAL method.

制剂

Lyophilized from a 0.2 μm filtered solution of 20mM HEPES, 150mM NaCl, pH8.0.Contact us for customized product form or formulation.

描述

Recombinant Human PBEF/Visfatin/NAMPT Protein is produced by E. coli expression system. The target protein is expressed with sequence (Asn2-His491) of human Visfatin/Nampt (Accession #P43490) fused with no additional amino acid.

储存

Store at -20℃.Store the lyophilized protein at -20℃ to -80 ℃ up to 1 year from the date of receipt.
After reconstitution, the protein solution is stable at -20℃ for 3 months, at 2-8℃ for up to 1 week.未开盖的干粉蛋白在 -20°C至-80°C可保存12个月；
复溶之后，蛋白溶液在-20°C及以下可保存3个月，在2-8℃可保存1周。

生物活性

Measured in a cell proliferation assay using RPMI 8226 cells. The ED50 for this effect is 1.72‑6.89 ng/mL,corresponding to a specific activity of 1.45×105~5.81×105units/mg.

复溶

Centrifuge the tube before opening. Reconstitute to a concentration of 0.1-0.5 mg/mL in sterile distilled water. Avoid vortex or vigorously pipetting the protein. For long term storage, it is recommended to add a carrier protein or stablizer (e.g. 0.1% BSA, 5% HSA, 10% FBS or 5% Trehalose), and aliquot the reconstituted protein solution to minimize free-thaw cycles.收到重组蛋白产品之后请检查蛋白冻干粉末是否贴于瓶底，如果粉末浮起，开盖之前请先低温离心。将蛋白用说明书中指定的缓冲液复溶至0.1-0.5 mg/mL（请注意蛋白复溶浓度不能低于0.1 mg/mL），室温平衡5-10 min保证充分溶解，复溶过程中请不要剧烈涡旋及吹打蛋白溶液。如需长期储存，建议复溶时添加载体蛋白或者稳定剂（如0.1% BSA, 5% HSA, 10% FBS 或者 5% 海藻糖），同时将复溶后的蛋白溶液按照需求进行分装，储存于-20°C至-80°C，随取随用，避免反复冻融。

蛋白复溶计算器

请在蛋白复溶计算器中输入蛋白总质量和所需终浓度，快速计算您需要添加溶液的体积吧！

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折叠内容

背景信息

Pre-B cell colony enhancing factor (PBEF) was originally identified as a cytokine that potentiated the clonalexpansion and differentiation of pre-B cells, but it is also acknowledged to be the ubiquitous intracellularenzyme nicotinamide phosphoribosyltranferase (NAMPT) and the adipokine “ visfatin ” . PBEF is constitutivelyexpressed in the fetal membranes where its greatest expression is in the amnion. It has intracellular andextracellular forms. Most of the intracellular functions of PBEF are due to its role as a Nampt which can induceangiogenesis through upregulation of VEGF and VEGFR and secretion of MCP-1. Extracellular PBEF has beenshown to increase inflammatory cytokines, such as TNF- α , IL-1 β , IL-16, and TGF- β 1. PBEF also increases theproduction of IL-6, TNF- α , and IL-1 β in CD14+ monocyctes, macrophages, and dendritic cells, enhances theeffectiveness of T cells.

基因ID

10135

Swiss Prot

P43490

别名

NAMPT;1110035O14Rik;PBEF;PBEF1;VF;VISFATIN

研究领域