Immunogen
Purified recombinant fragment of PBEF expressed in E. Coli.
Specificity
PBEF Monoclonal Antibody detects endogenous levels of PBEF protein.
Formulation
Ascitic fluid containing 0.03% sodium azide,0.5% BSA, 50%glycerol.
Dilution rate
Western Blot: 1/500 - 1/2000. ELISA: 1/10000. Not yet tested in other applications.
Purification process (Immunogen)
Affinity purification
Background
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],
Function
catalytic activity:Nicotinamide D-ribonucleotide + diphosphate = nicotinamide + 5-phospho-alpha-D-ribose 1-diphosphate.,caution:Was originally (PubMed:8289818) thought to be a cytokine which acts on early B-lineage precursor cells, by enhancing the effect of IL-7 and SCF on pre-B-cell colony formation.,function:Catalyzes the condensation of nicotinamide with 5-phosphoribosyl-1-pyrophosphate to yield nicotinamide mononucleotide, an intermediate in the biosynthesis of NAD. It is the rate limiting component in the mammalian NAD biosynthesis pathway.,pathway:Cofactor biosynthesis; NAD(+) biosynthesis; nicotinamide ribonucleotide from 5-phospho-alpha-D-ribose 1-diphosphate and nicotinamide: step 1/1.,similarity:Belongs to the NAPRTase family.,tissue specificity:Expressed in large amounts in bone marrow, liver tissue, and muscle. Also present in heart, placenta, lung, and kidney tissues.,
Protein name
Nicotinamide phosphoribosyltransferase
Other name
NAMPT; PBEF; PBEF1; Nicotinamide phosphoribosyltransferase; NAmPRTase; Nampt; Pre-B-cell colony-enhancing factor 1; Pre-B cell-enhancing factor; Visfatin
Fields
>>Nicotinate and nicotinamide metabolism;>>Metabolic pathways;>>NOD-like receptor signaling pathway
Human protein sequence Database
P43490
Mouse protein sequence database
Q99KQ4
Rat protein sequence database
Cellular localization
Nucleus . Cytoplasm . Secreted . Under non-inflammatory conditions, visfatin predominantly exhibits a granular pattern within the nucleus. Secreted by endothelial cells upon IL-1beta stimulation. Abundantly secreted in milk, reaching 100-fold higher concentrations compared to maternal serum. .
Tissue expression
Expressed in large amounts in bone marrow, liver tissue, and muscle. Also present in heart, placenta, lung, and kidney tissues.
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