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Protein Page:
SIRT3 (human)

SIRT3 a soluble mitochondrial NAD-dependent protein deacetylase. Can deacetylate and thereby activate a central metabolic regulator in the mitochondrial matrix, glutamate dehydrogenase. Mitochondrial proteins are hyperacetylated in SIRT3-deficient mice, but not in SIRT4 or SIRT5 deficient mice. SIRT3-deficient mice have no obvious metabolic phenotype, and the process of adaptive thermogenesis is normal. Can deacetylate and activate isocitrate dehydrogenase 2, an enzyme that participates in regulation of the citric acid cycle and the regeneration of antioxidants. Inhibited by nicotinamide, but not by trichostatin A. Its unprocessed form is enzymatically inactive. It is processed by mitochondrial processing peptidase (MPP) in the mitochondrial matrix to give an enzymatically active 28 kDa product. Note: This description may include information from UniProtKB.
Protein type: EC 3.5.1.-; Mitochondrial; Deacetylase
Cellular Component: mitochondrion; membrane; mitochondrial matrix
Molecular Function: protein binding; zinc ion binding; NAD-dependent histone deacetylase activity (H3-K14 specific); NAD+ ADP-ribosyltransferase activity
Biological Process: protein amino acid ADP-ribosylation; protein amino acid deacetylation; aerobic respiration
Reference #:  Q9NTG7 (UniProtKB)
Alt. Names/Synonyms: hSIRT3; mitochondrial nicotinamide adenine dinucleotide-dependent deacetylase; NAD-dependent deacetylase sirtuin-3, mitochondrial; silent mating type information regulation 2, S.cerevisiae, homolog 3; sir2-like 3; SIR2-like protein 3; SIR2L3; SIRT3; sirtuin (silent mating type information regulation 2 homolog) 3 (S. cerevisiae); sirtuin type 3
Gene Symbols: SIRT3
Molecular weight: 43,573 Da
Basal Isoelectric point: 8.98  Predict pI for various phosphorylation states
CST Pathways:  Protein Acetylation
Protein-Specific Antibodies or siRNAs from Cell Signaling Technology® Total Proteins
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Protein Structure Not Found.

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Modification Sites and Domains  

Modification Sites in Parent Protein, Orthologs, and Isoforms  

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SS: The number of records in which this modification site was determined using site-specific methods. SS methods include amino acid sequencing, site-directed mutagenesis, modification site-specific antibodies, specific MS strategies, etc.


MS: The number of records in which this modification site was assigned using ONLY proteomic discovery-mode mass spectrometry.




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