PBEF Recombinant Protein

N-6 His tag

Lyophilized protein should be stored at -20˚ C, though stable at room temperature for 3 weeks.
Reconstituted protein solution can be stored at 4-7˚ C for 2-7 days.
Aliquots of reconstituted samples are stable at -20˚ C for 3 months.

Pre-B cell colony enhancing factor (PBEF) was originally identified as a cytokine that potentiated the clonal expansion and differentiation of pre-B cells, but it is also acknowledged to be the ubiquitous intracellular enzyme nicotinamide phosphoribosyltranferase (NAMPT) and the adipokine “visfatin”. PBEF is constitutively expressed in the fetal membranes where its greatest expression is in the amnion. It has intracellular and extracellular forms. Most of the intracellular functions of PBEF are due to its role as a Nampt which can induce angiogenesis through upregulation of VEGF and VEGFR and secretion of MCP-1. Extracellular PBEF has been shown to increase inflammatory cytokines, such as TNF- alpha, IL-1 beta , IL-16, and TGF- beta 1. PBEF also increases the production of IL-6, TNF- alpha, and IL-1 beta in CD14+ monocyctes, macrophages, and dendritic cells, enhances the effectiveness of T cells.

Lyophilized from a 0.2 um filtered solution of 20mM HEPES, 150mM NaCl, pH8.0. It is not recommended to reconstitute to a concentration less than 100 ug/ml. Dissolve the lyophilized protein in ddH2O.

nicotinamide phosphoribosyltransferase

Products are intended for laboratory research purposes only and should be used by qualified personnel only. They are not intended for use in humans. ProSci is not liable for damages or injuries resulting from receipt and/or use of ProSci materials. Please refer to the Material Safety Data Sheet (MSDS) for safe storage, handling, and use procedures.

Human