4RMI

Human Sirt2 in complex with SirReal1 and Ac-Lys-OTC peptide

4RMI の概要

• エントリーDOI: 10.2210/pdb4rmi/pdb
• 関連するPDBエントリー: 4RMG 4RMH 4RMJ
• 分子名称: NAD-dependent protein deacetylase sirtuin-2, Ac-Lys-OTC peptide, ZINC ION, ... (5 entities in total)
• 機能のキーワード: hydrolase-hydrolase inbititor complex, hydrolase/hydrolase inbititor
• 由来する生物種: Homo sapiens (human); 詳細
• 細胞内の位置: Nucleus. Isoform 1: Cytoplasm . Isoform 2: Cytoplasm . Isoform 5: Cytoplasm : Q8IXJ6
• タンパク質・核酸の鎖数: 2
• 化学式量合計: 35327.16

構造登録者

Rumpf, T.,Schiedel, M.,Karaman, B.,Roessler, C.,North, B.J.,Lehotzky, A.,Olah, J.,Ladwein, K.I.,Schmidtkunz, K.,Gajer, M.,Pannek, M.,Steegborn, C.,Sinclair, D.A.,Gerhardt, S.,Ovadi, J.,Schutkowski, M.,Sippl, W.,Einsle, O.,Jung, M. (登録日: 2014-10-21, 公開日: 2015-02-25, 最終更新日: 2024-10-09)

主引用文献

Rumpf, T.,Schiedel, M.,Karaman, B.,Roessler, C.,North, B.J.,Lehotzky, A.,Olah, J.,Ladwein, K.I.,Schmidtkunz, K.,Gajer, M.,Pannek, M.,Steegborn, C.,Sinclair, D.A.,Gerhardt, S.,Ovadi, J.,Schutkowski, M.,Sippl, W.,Einsle, O.,Jung, M.
Selective Sirt2 inhibition by ligand-induced rearrangement of the active site.
Nat Commun, 6:6263-6263, 2015

PubMed Abstract: Sirtuins are a highly conserved class of NAD(+)-dependent lysine deacylases. The human isotype Sirt2 has been implicated in the pathogenesis of cancer, inflammation and neurodegeneration, which makes the modulation of Sirt2 activity a promising strategy for pharmaceutical intervention. A rational basis for the development of optimized Sirt2 inhibitors is lacking so far. Here we present high-resolution structures of human Sirt2 in complex with highly selective drug-like inhibitors that show a unique inhibitory mechanism. Potency and the unprecedented Sirt2 selectivity are based on a ligand-induced structural rearrangement of the active site unveiling a yet-unexploited binding pocket. Application of the most potent Sirtuin-rearranging ligand, termed SirReal2, leads to tubulin hyperacetylation in HeLa cells and induces destabilization of the checkpoint protein BubR1, consistent with Sirt2 inhibition in vivo. Our structural insights into this unique mechanism of selective sirtuin inhibition provide the basis for further inhibitor development and selective tools for sirtuin biology.

PubMed: 25672491
DOI: 10.1038/ncomms7263

実験手法

X-RAY DIFFRACTION (1.45 Å)