SIRT1 Protein & Antibody

Sirtuin 1

SIRT1 Products

SIRT1 Protein, Recombinant

Molecule	Species	Description	Cat. No
SIRT1/SIR2L1	Human	SIRT1/SIR2L1 Protein, Recombinant	11748-H07E

SIRT1 Antibody

Molecule	Application	Description	Cat. No
Human SIRT1/SIR2L1	WB	SIRT1 Antibody	11748-MM03
Human SIRT1/SIR2L1	ELISA	SIRT1 Antibody	11748-MM04

SIRT1 Related Areas

Signal Transduction>>Transcription Factor & Regulator>>SIRT1/SIR2L1

SIRT1 Alternative Names

SIRT1, RP11-57G10.3, SIR2L1 [Homo sapiens]

Sirt1, AA673258, MGC150273, SIR2L1, Sir2, Sir2a, Sir2alpha [Mus musculus]

SIRT1 Background

SIRT1 belongs to the sirtuin family. Members of the sirtuin family are characterized by a sirtuin core domain and grouped into four classes. SIRT1 is included in class I of the sirtuin family. It is a NAD-dependent protein deacetylase, which regulates processes such as apoptosis and muscle differentiation by deacetylating key proteins. It deacetylates 'Lys-382' of p53/TP53 and impairs its ability to induce proapoptotic program and modulate cell senescence. SIRT1 also deacetylates TAF1B and thereby represses rDNA transcription by the RNA polymerase I. It is involved in HES1- and HEY2-mediated transcriptional repression. SIRT1 inhibits skeletal muscle differentiation by deacetylating PCAF and MYOD1. It may serve as a sensor of the cytosolic ratio of NAD(+)/NADH, which is essential in skeletal muscle cell differentiation. It also deacetylates 'Lys-16' of histone H4 (in vitro). Component of the eNoSC (energy-dependent nucleolar silencing) complex, a complex that mediates silencing of rDNA in response to intracellular energy status and acts by recruiting histone-modifying enzymes. The eNoSC complex is able to sense the energy status of cell: upon glucose starvation, elevation of NAD(+)/NADP(+) ratio activates SIRT1, leading to histone H3 deacetylation followed by dimethylation of H3 at 'Lys-9' (H3K9me2) by SUV39H1 and the formation of silent chromatin in the rDNA locus.

SIRT1 Related Studies

1. Sharma A, et al. (2012) Interactomic and pharmacological insights on human Sirt-1. Front Pharmacol. 3-40.
2. Sun C, et al. (2007) SIRT1 improves insulin sensitivity under insulin-resistant conditions by repressing PTP1B. Cell Metab. 6(4):307-19.
3. Rodgers JT, et al. (2005) Nutrient control of glucose homeostasis through a complex of PGC-1alpha and SIRT1. Nature. 434(7029):113-8.
4. Nemoto S, et al. (2005) SIRT1 functionally interacts with the metabolic regulator and transcriptional coactivator PGC-1{alpha}. J Biol Chem. 280(16):16456-60.