MW 248.71 Da, Purity >97%. Selective, cell-permeable SIRT1 Inhibitor. (IC50= 98 nM, 19.6, 48.7 and > 100 μM for SIRT1, SIRT2, SIRT3, HDAC and NADase respectively). Shows no effect at other HDACs or SIRTs. Enhances p53 acetylation in response to DNA damaging agents.
75SirT1, FLJ35621, FLJ37491, HST2, HST2, S. cerevisiae, homolog of, Mitochondrial nicotinamide adenine dinucleotide dependent deacetylase, NAD dependent deacetylase sirtuin 3 mitochondrial, NAD dependent protein deacetylase sirtuin 1, NAD-dependent deacetylase sirtuin-1, NAD-dependent deacetylase sirtuin-2, NAD-dependent protein deacetylase sirtuin-2, NAD-dependent protein deacetylase sirtuin-3, mitochondrial, OTTHUMP00000198111, OTTHUMP00000198112, Regulatory protein SIR2 homolog 1, Regulatory protein SIR2 homolog 2, Regulatory protein SIR2 homolog 3, SIR1_HUMAN, SIR2 L3, SIR2 like 1, SIR2, S. cerevisiae, homolog-loke 2, SIR2, S.cerevisiae, homolog-like 1, SIR2-like protein 1, SIR2-like protein 2, SIR2-like protein 3, SIR2ALPHA, SIR2L, SIR2L1, SIR2L2, SIR3_HUMAN, SIRT 2, SIRT2_HUMAN, Silencing information regulator 2 like, Silent information regulator 2, Silent mating type information regulation 2 S.cerevisiae homolog 3, Sir 2 like 3, Sir2 related protein type 2, SirtT1 75 kDa fragment, Sirtuin (silent mating type information regulation 2 homolog) 1 (S. cerevisiae), Sirtuin (silent mating type information regulation 2 homolog) 2 (S.cerevisiae), Sirtuin 1, Sirtuin 2, Sirtuin 3, Sirtuin silent mating type information regulation 2 homolog 3 (S. cerevisiae), Sirtuin type 1, Sirtuin type 2, Sirtuin type 3, hSIR2, hSIRT 3, hSIRT1
MW 248.71 Da, Purity >97%. Selective, cell-permeable SIRT1 Inhibitor. (IC50= 98 nM, 19.6, 48.7 and > 100 μM for SIRT1, SIRT2, SIRT3, HDAC and NADase respectively). Shows no effect at other HDACs or SIRTs. Enhances p53 acetylation in response to DNA damaging agents.
Soluble in DMSO to 100 mM.
Soluble in ethanol to 100 mM.
Selective, cell-permeable SIRT1 Inhibitor. (IC50= 98 nM, 19.6, 48.7 and > 100 μM for SIRT1, SIRT2, SIRT3, HDAC and NADase respectively). Shows no effect at other HDACs or SIRTs. Enhances p53 acetylation in response to DNA damaging agents.
SIRT1 SIRT2 and SIRT3 are members of the sirtuin family of proteins also known as Sir2-like proteins which participate in cellular regulation processes. These proteins function as NAD+-dependent deacetylases meaning they remove acetyl groups from protein substrates using NAD+ as a cofactor. SIRT1 is a well-studied protein with a molecular mass of approximately 120 kDa and is expressed in various tissues including the brain liver muscle and heart. SIRT2 and SIRT3 also play roles in cellular processes and are found in different cellular compartments such as the cytoplasm and mitochondria respectively.
These sirtuins are significant in regulating diverse cellular functions like metabolism aging stress response and inflammation. SIRT1 is involved in deacetylating histones and is part of larger chromatin remodeling complexes. SIRT2 mostly resides in the cytoplasm and influences the cell cycle while SIRT3 acts in the mitochondria to regulate reactive oxygen species production and energy metabolism. These functions establish them as important players in maintaining cellular homeostasis and adaptative responses to changing cellular environments.
SIRT1 SIRT2 and SIRT3 play critical roles in vital pathways related to insulin signaling and oxidative stress response. SIRT1 interacts with the PGC-1α pathway which is key in regulating mitochondrial biogenesis and fatty acid oxidation. SIRT3 is actively involved in the antioxidant defense system aiding in the deacetylation of forkhead box proteins particularly FOXO3a. SIRT2's scope extends to influence the regulation of the AMP-activated protein kinase (AMPK) signaling pathway intersecting with cellular energy balance and stress responses.
SIRT1 SIRT2 and SIRT3 have associations with several metabolic and neurodegenerative diseases including type 2 diabetes and Alzheimer's disease. SIRT1 is linked with protective roles in diabetes by enhancing insulin sensitivity through interaction with FOXO proteins and influencing glucose metabolism. SIRT2 has connections to neurodegenerative conditions like Alzheimer's through its involvement in amyloid-beta peptide processing. SIRT3 offers protective effects in age-related disorders by regulating mitochondrial function and managing oxidative stress displaying interactions with key mitochondrial enzymes. These insights into their roles suggest potential for therapeutic targets possibly through selective inhibition or activation of these sirtuins.
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2D chemical structure image of ab141506, EX-527, SIRT1 Inhibitor
Time course of SIRT1-substrate deacetylation by recombinant SIRT1 in the presence of EX-527.
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