title: Crystal structure analysis of human Sirt2 and its ADP-ribose complex.
abstract: Sirtuins are NAD(+)-dependent protein deacetylases that regulate metabolism and aging-related processes. Sirt2 is the only cytoplasmic isoform among the seven mamalian Sirtuins (Sirt1-7) and structural information concerning this isoform is limited. We crystallized Sirt2 in complex with a product analog, ADP-ribose, and solved this first crystal structure of a Sirt2 ligand complex at 2.3Å resolution. Additionally, we re-refined the structure of the Sirt2 apoform and analyzed the conformational changes associated with ligand binding to derive insights into the dynamics of the enzyme. Our analyses also provide information on Sirt2 peptide substrate binding and structural states of a Sirt2-specific protein region, and our insights and the novel Sirt2 crystal form provide helpful tools for the development of Sirt2 specific inhibitors.
authors: Department of Biochemistry, University of Bayreuth, 95440 Bayreuth, Germany.
authors: Sébastien
authors: S
authors: Moniot
authors: Mike
authors: M
authors: Schutkowski
authors: Clemens
authors: C
authors: Steegborn
mesh_terms: D000246:Adenosine Diphosphate Ribose / Q000737:chemistry*; D003460:Crystallization; D006801:Humans; D008958:Models, Molecular; D011487:Protein Conformation; D056565:Sirtuin 2 / Q000737:chemistry*
chemical_list: D000246:Adenosine Diphosphate Ribose; C474199:SIRT2 protein, human; D056565:Sirtuin 2