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- Table of Contents
1 Citations 4 Q&As
Facts about NAD-dependent protein lipoamidase sirtuin-4, mitochondrial.
Inhibits the pyruvate dehydrogenase complex (PDH) activity through the enzymatic hydrolysis of the lipoamide cofactor from the E2 component, DLAT, in a phosphorylation-independent manner (PubMed:25525879). Catalyzes the transfer of ADP-ribosyl groups onto target proteins, including mitochondrial GLUD1, inhibiting GLUD1 enzyme activity.
Human | |
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Gene Name: | SIRT4 |
Uniprot: | Q9Y6E7 |
Entrez: | 23409 |
Belongs to: |
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sirtuin family |
EC 2.4.2.-; EC 3.5.1; MGC130046; MGC130047; MGC57437; SIR2L4NAD-dependent ADP-ribosyltransferase sirtuin-4; sir2-like 4; SIR2-like protein 4; sirtuin (silent mating type information regulation 2 homolog) 4 (S. cerevisiae); sirtuin (silent mating type information regulation 2, S. cerevisiae, homolog) 4; sirtuin 4; sirtuin type 4
Mass (kDA):
35.188 kDA
Human | |
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Location: | 12q24.23-q24.31 |
Sequence: | 12; NC_000012.12 (120290639..120313242) |
Detected in vascular smooth muscle and striated muscle. Detected in insulin-producing beta-cells in pancreas islets of Langerhans (at protein level). Widely expressed. Weakly expressed in leukocytes and fetal thymus.
Mitochondrion matrix.
PMID: 10381378 by Frye R.A.; Characterization of five human cDNAs with homology to the yeast SIR2 gene: Sir2-like proteins (sirtuins) metabolize NAD and may have protein ADP-ribosyltransferase activity.
PMID: 16959573 by Haigis M.C., et al. SIRT4 inhibits glutamate dehydrogenase and opposes the effects of calorie restriction in pancreatic beta cells.
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