Download MendeleyCrystal structure of a SIR2 homolog-NAD complex.
Min, J., Landry, J., Sternglanz, R., Xu, R.M.(2001) Cell 105: 269-279
- PubMed: 11336676
- DOI: https://doi.org/10.1016/s0092-8674(01)00317-8
- Primary Citation of Related Structures:
1ICI - PubMed Abstract:
The SIR2 protein family comprises a novel class of nicotinamide-adenine dinucleotide (NAD)-dependent protein deacetylases that function in transcriptional silencing, DNA repair, and life-span extension in Saccharomyces cerevisiae. Two crystal structures of a SIR2 homolog from Archaeoglobus fulgidus complexed with NAD have been determined at 2.1 A and 2.4 A resolutions. The structures reveal that the protein consists of a large domain having a Rossmann fold and a small domain containing a three-stranded zinc ribbon motif. NAD is bound in a pocket between the two domains. A distinct mode of NAD binding and an unusual configuration of the zinc ribbon motif are observed. The structures also provide important insights into the catalytic mechanism of NAD-dependent protein deacetylation by this family of enzymes.
Organizational Affiliation:
W. M. Keck Structural Biology Laboratory, Cold Spring Harbor Laboratory, Cold Spring Harbor, NY 11724, USA.
