Download MendeleyStructure of the histone deacetylase SIRT2.
Finnin, M.S., Donigian, J.R., Pavletich, N.P.(2001) Nat Struct Biol 8: 621-625
- PubMed: 11427894
- DOI: https://doi.org/10.1038/89668
- Primary Citation of Related Structures:
1J8F - PubMed Abstract:
Sir2 is an NAD-dependent histone deacetylase that mediates transcriptional silencing at mating-type loci, telomeres and ribosomal gene clusters, and has a critical role in the determination of life span in yeast and Caenorhabditis elegans. The 1.7 A crystal structure of the 323 amino acid catalytic core of human SIRT2, a homolog of yeast Sir2, reveals an NAD-binding domain, which is a variant of the Rossmann fold, and a smaller domain composed of a helical module and a zinc-binding module. A conserved large groove at the interface of the two domains is the likely site of catalysis based on mutagenesis. Intersecting this large groove, there is a pocket formed by the helical module. The pocket is lined with hydrophobic residues conserved within each of the five Sir2 classes, suggesting that it is a class-specific protein-binding site.
Organizational Affiliation:
Cellular Biochemistry and Biophysics Program, and Howard Hughes Medical Institute, Memorial Sloan-Kettering Cancer Center, New York, New York 10021, USA.
