S8446 Sigma-Aldrich

SIRT1 human

recombinant, expressed in E. coli, N-terminal histidine tagged, ≥90% (SDS-PAGE), buffered aqueous glycerol solution

Synonym: SIR2α, SIR2L1, Sirtuin1



Related Categories Cell Biology, Cell Signaling and Neuroscience, DNA-RNA Transcription Regulators, Gene Regulation and Expression, Reagents,
Quality Level   200
recombinant   expressed in E. coli
description   full-length amino acid sequence of original SIRT1 protein (accession number NP_036370)
assay   ≥90% (SDS-PAGE)
form   buffered aqueous glycerol solution
shipped in   dry ice
storage temp.   −20°C
Gene Information   human ... SIRT1(23411)


General description

SIRT1 (sirtuin 1) belongs to the silent information regulator (SIR) family and is a class of HDAC (histone deacetylase). It is expressed in various tissues including brain, liver, pancreas, adipose tissue, and skeletal muscle. SIRT1 is also known as the longevity gene.


Human SIRT1 (sirtuin1) has been used in in vitro acetylation and deacetylation assays. It has also been used to study its effects on homeostasis of human nucleus pulposus cells.

Biochem/physiol Actions

SIRT1 (sirtuin 1) functions as a regulator of various metabolic pathways, and influences the pathophysiology of several metabolic diseases. It is a regulator of protein deacetylation, and is a candidate therapeutic target in non-alcoholic fatty liver disease (NAFLD), amyotrophic lateral sclerosis (ALS), kidney disease, and pulmonary disease. It also participates in tumorigenesis, and whether it functions as an oncogene or as a tumor suppressor depends upon the tumor type. In pancreatic ductal adenocarcinoma (PDAC) its elevated expression is linked with poor prognosis, and in non-small-cell lung cancer (NSCLC) it suppresses the expression of tumor suppressor p27. It is also thought to function as a suppressor of cardiovascular disorders, such as myocardial infarction, or neurodegenerative diseases, such as Alzheimer’s disease (AD) or Parkinson’s disorder (PD).

Sirtuins are a family of NAD+ dependent deacetylases that remove an acetyl group from the e-amino group of lysine residues. The proteins within this family are named after the first protein discovered, from yeast, called Sir2 (Silent Information Regulator 2). The proteins are conserved from bacteria to higher eukaryotes. In humans, there are seven Sir2 family members (SIRT1 to SITR7). SIRT1 plays a pivotal role in the regulation of cellular differentiation, metabolism, cell cycle, apoptosis and regulation of p53. Several targets for SIRT1 were identified among them Lys382 of p53. Using RNA interference, additional targets were identified. It was demonstrated that reduced levels of human SIRT1 led to increased acetylation of Histone H4-Lys16, H4-Lys20, and Histone H3-Lys9 as well as histone H1-Lys26.

Physical form

Solution containing 50 mM Tris, pH 7.4, 100 mM NaCl, 1 mM DTT, protease inhibitors (Product code P8340) 1:200, and 10% glycerol (w/v).

Safety & Documentation

Safety Information

NONH for all modes of transport
WGK Germany 
Flash Point(F) 
Not applicable
Flash Point(C) 
Not applicable
Protocols & Articles


Mitochondrial Dysfunction and Metabolic Defects

Defects in mitochondrial function are associated with insulin resistance in both human and animal studies. Insulin resistance is associated with a decrease in the number, oxidative capacity, size, an...
Keywords: Acetylations, Apoptosis, Biofiles, Cancer, Carboxylations, Catalog, Catalysis, Citric Acid Cycle, Decarboxylations, Degradations, Diabetes, Enzyme-linked immunosorbent assay, Glycolysis, Immunofluorescence, Immunohistochemistry, Lipid Metabolism, Metabolism, Metabolites, Neurotransmitters, Obesity, Oxidations, Phosphorylations, Physiological Processes, Protocols, Transcription, Transduction, Transfection, Western blot

Peer-Reviewed Papers


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S5196 Anti-Sirt1 antibody, Mouse monoclonal, clone SIR11, purified from hybridoma cell culture
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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
92210 Timestrip Plus 0 °C
06693 Timestrip Plus -20 °C

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