Nicotinamide Phosphoribosyltransferase (NAMPT) ELISA Kit for Human

This gene encodes a protein that catalyzes the condensation of nicotinamide with 5-phosphoribosyl-1-pyrophosphate to yield nicotinamide mononucleotide, one step in the biosynthesis of nicotinamide adenine dinucleotide. The protein belongs to the nicotinic acid phosphoribosyltransferase (NAPRTase) family and is thought to be involved in many important biological processes, including metabolism, stress response and aging. This gene has a pseudogene on chromosome 10. [provided by RefSeq, Feb 2011]

PBEF: an ubiquitous protein originally described as a cytokine which acts on early B-lineage precursor cells. Other reports indicate that PBEF is not a cytokine-like secreted protein but an intracellular protein associated with the cell cycle. Contains a catalytically active nicotinate phosphoribosyltransferase domain, an enzyme involved in nicotinamide adenine dinucleotide (NAD) biosynthesis.

Protein type: Transferase; EC 2.4.2.12; Cytokine; Cofactor and Vitamin Metabolism - nicotinate and nicotinamide; Cell cycle regulation

Chromosomal Location of Human Ortholog: 7q22.3

Cellular Component: cell junction; cytosol; extracellular space; nucleoplasm

Molecular Function: cytokine activity; drug binding; nicotinamide phosphoribosyltransferase activity; nicotinate-nucleotide diphosphorylase (carboxylating) activity; protein binding; protein homodimerization activity

Biological Process: cell-cell signaling; circadian regulation of gene expression; circadian rhythm; female pregnancy; insulin receptor signaling pathway; NAD biosynthetic process; NAD metabolic process; nicotinamide metabolic process; positive regulation of cell proliferation; positive regulation of nitric-oxide synthase biosynthetic process; positive regulation of smooth muscle cell proliferation; positive regulation of transcription from RNA polymerase II promoter; response to organic cyclic substance; signal transduction; vitamin metabolic process; water-soluble vitamin metabolic process