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  • AV42254 - Anti-PBEF1 (AB1) antibody produced in rabbit

AV42254 Sigma-Aldrich

Anti-PBEF1 (AB1) antibody produced in rabbit

IgG fraction of antiserum

Synonym: Anti-1110035O14Rik, Anti-DKFZP666B131, Anti-MGC117256, Anti-NAMPT, Anti-PBEF, Anti-Pre-B-cell colony enhancing factor 1



Related Categories Alphabetical Index, Antibodies, Antibodies for Cell Biology, Antibodies for Obesity Research, Antibodies to Hormones,
conjugate   unconjugated
clone   polyclonal
biological source   rabbit
application(s)   western blot: suitable
species reactivity   rabbit, mouse, guinea pig, rat, horse, human, dog, bovine
mol wt   54 kDa
form   buffered aqueous solution
shipped in   wet ice
storage temp.   −20°C
antibody form   IgG fraction of antiserum
antibody product type   primary antibodies
concentration   0.5 mg - 1 mg/mL
NCBI accession no.   NP_005737
UniProt accession no.   P43490
Gene Information   human ... PBEF1(10135)


General description

Pre-B-cell colony enhancing factor 1/nicotinamide phosphoribosyltransferase (PBEF1, NAMPT, visfatin) is a rate limiting enzyme that promotes the salvage pathway biosynthesis of nicotinamide mononucleotide and nicotinamide dinucleotide (NAD) by catalyzing the condenstation of nicotinamide with 5-phosphoribosyl-1-pyrophosphate. PBEF1 promotes B-cell maturation and vascular smooth muscle cell differentiaton. Visfatin/PBEF/Nampt is also a proinflammatory cytokine and marker of adipose tissue associated with systemic insulin resistance and hyperlipidemia. PBEF1 is a potential malignant astrocytoma serum marker and prognostic indicator among glioblastoma (GBM).


Anti-PBEF1 (AB1) polyclonal antibody reacts with chicken, zebrafish, human, mouse, rat, canine, and pig pre-B-cell colony enhancing factor 1/nicotinamide phosphoribosyltransferase/visfatin proteins.


Synthetic peptide directed towards the C terminal region of human PBEF1


Anti-PBEF1 (AB1) polyclonal antibody is used to tag pre-B-cell colony enhancing factor 1/nicotinamide phosphoribosyltransferase/visfatin detection and quantitation by Western blotting and in plasma by immunohistochemical (IHC) techniques. It is used as a probe to determine the roles of pre-B-cell colony enhancing factor 1/nicotinamide phosphoribosyltransferase/visfatin in adipose tissue inflammation, as a cancer serum marker and as an NAD biosynthesis salvage pathway enzyme.

Physical form

Purified antibody supplied in 1x PBS buffer with 0.09% (w/v) sodium azide and 2% sucrose.


Unless otherwise stated in our catalog or other company documentation accompanying the product(s), our products are intended for research use only and are not to be used for any other purpose, which includes but is not limited to, unauthorized commercial uses, in vitro diagnostic uses, ex vivo or in vivo therapeutic uses or any type of consumption or application to humans or animals.

Biochem/physiol Actions

PBEF1 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 is an adipokine that is localized to the bloodstream and has various functions, including the promotion of vascular smooth muscle cell maturation and inhibition of neutrophil apoptosis. It also activates insulin receptor and has insulin-mimetic effects, lowering blood glucose and improving insulin sensitivity. The protein is highly expressed in visceral fat and serum levels of the protein correlate with obesity.


Synthetic peptide located within the following region: CSYVVTNGLGINVFKDPVADPNKRSKKGRLSLHRTPAGNFVTLEEGKGDL

Safety & Documentation

Safety Information

NONH for all modes of transport
WGK Germany 


Certificate of Analysis

Protocols & Articles


Antibody Basics

Immunoglobulins (Igs) are produced by B lymphocytes and secreted into plasma. The Ig molecule in monomeric form is a glycoprotein with a molecular weight of approximately 150 kDa that is shaped more ...
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Western Blot Protocol | Immunoblotting Protocol

Western Blotting refers to the electrophoretic transfer of proteins from sodium dodecyl sulfate polyacrylamide gels to sheets of PVDF or nitrocellullose membrane, followed by immunodetection of prote...
Keywords: AGE, Buffers, Cell disruption, Detergents, Dialysis, Electroblotting, Electrophoresis, Enzyme activity, Gel electrophoresis, Immunoprecipitation, PAGE, Protein extraction, Purification, Sample preparations, Western blot

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