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  • S5313 - Anti-Sir2 (AS-16) antibody produced in rabbit

S5313 Sigma-Aldrich

Anti-Sir2 (AS-16) antibody produced in rabbit

affinity isolated antibody, buffered aqueous solution



Related Categories Alphabetical Index, Antibodies, Antibodies against Proteins, Bioactives, Markers and Receptors, Antibodies against Proteins/Bioactives/Markers/Receptors for Stem Cell Biology, Antibodies for Cell Biology,
conjugate   unconjugated
clone   polyclonal
biological source   rabbit
application(s)   indirect immunofluorescence: 1:50 using mouse NIH3T3 cells
  microarray: suitable
  western blot: 1:2,000 using mouse NIH/3T3 cells
species reactivity   mouse
mol wt   antigen ~110 kDa
form   buffered aqueous solution
shipped in   dry ice
storage temp.   −20°C
packaging   antibody small pack of 25 μL
antibody form   affinity isolated antibody
Quality Level   200
antibody product type   primary antibodies
UniProt accession no.   Q923E4
Gene Information   mouse ... Sirt1(93759)


General description

Sir2 belongs to a family of proteins that is found in organisms ranging from bacteria to complex eukaryotes. Members of this family contain a 250 amino acid core domain that shares about 25-60% sequence identity.


Anti-Sir2 polyclonal antibody specifically recognizes mouse Sir2 (AS-16). Staining of the Sir2 band is specifically inhibited by the immunizing peptide.


synthetic peptide corresponding to mouse Sir2 sequence (amino acids 722-737 with N-terminal added lysine), conjugated to KLH. This sequence is 62% homologous to the corresponding human sequence.


Anti-Sir2 (AS-16) antibody produced in rabbit has been used in
• western blotting
• immunoprecipitation
• antibody microarray

Physical form

Solution in 0.01 M phosphate buffered saline, pH 7.4, containing 1% bovine serum albumin and 15 mM sodium azide.


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

Sir2, one of the silent information regulator genes, encodes a protein that promotes a compact chromatin structure, thereby preventing or silencing gene transcription at selected loci. Silencing occurs as a series of events initiated by formation of Sir complexes (Sir2, Sir3, Sir4). Sir2 protein is an NAD-dependent histone deacetylase. Sir2 transfers acetyl groups from its protein substrates to ADP-ribose and synthesizes o-acetyl ADP-ribose. Through histone deacetylation, Sir2 may silence chromatin. It appears that Sir2 NAD requirement makes this protein an important player in the pathway that leads to increased life span of several species through calorie restriction.

Safety & Documentation

Safety Information

NONH for all modes of transport
WGK Germany 
Flash Point(F) 
Not applicable
Flash Point(C) 
Not applicable
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 ...
Keywords: Affinity chromatography, Centrifugation, Chromatography, Digestions, Direct immunofluorescence, Gene expression, High performance liquid chromatography, Immunofluorescence, Ion Exchange, Microscopy, Precipitation, Purification, Rheumatology, Scanning electron microscopy


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, Detection methods, Detergents, Dialysis, Electroblotting, Electrophoresis, Enzyme activity, Gel electrophoresis, Immunoprecipitation, PAGE, Protein extraction, Purification, Sample preparations, Western blot

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Peer-Reviewed Papers


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S5447 Anti-SIRT1 antibody produced in rabbit, ~1.0 mg/mL, affinity isolated antibody, buffered aqueous solution
S5322 Anti-Sirt1 (C-terminal) antibody produced in rabbit, ~1.0 mg/mL, affinity isolated antibody, buffered aqueous solution

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