Recombinant Human VISFATIN

Visfatin is a putative cytokine originally identified as PBEF (Pre-B cell-enhancing factor), subsequently determined to be a nicotinamide phosphoribosyltransferase (NAMPT) enzyme and member of the NAPRTase family, involved in catalyzing the biosynthesis of NAD from nicotinamide.

Visfatin is highly expressed in bone marrow, muscle and liver tissue and increases in expression in response to endotoxin, in amniotic epithelial cells following lipopolysaccharide (LPS) stimulation, and during the activation of T and B cells, dendritic cells and macrophages, suggesting a role in inflammatory processes.

52.5kD (465 amino acid residues).

10mM HCl

None present

Recombinant Protein

The ED ₅₀ was determined by the dose-dependant proliferation of the RPMI 8226 cells. The expected ED ₅₀ for this effect is 15.0-20.0 ng/ml.

Prior to reconstitution store at +4° C.
After reconstitution store at -20° C.
Storage in frost-free freezers is not recommended. This product should be stored undiluted. Avoid repeated freezing and thawing as this may denature the antibody. Should this product contain a precipitate we recommend microcentrifugation before use. This protein may be stored for3 months from date of reconstitution.