6M9D

PSEUDOMONAS SERINE-CARBOXYL PROTEINASE (SEDOLISIN) COMPLEXED WITH THE INHIBITOR Chymostatin

「1KE2」から置き換えられました

6M9D の概要

• エントリーDOI: 10.2210/pdb6m9d/pdb
• 関連するBIRD辞書のPRD_ID: PRD_002331
• 分子名称: SEDOLISIN, Chymostatin A, CALCIUM ION, ... (4 entities in total)
• 機能のキーワード: serine-carboxyl proteinase, hydrolase-hydrolase inhibitor complex, hydrolase/hydrolase inhibitor
• 由来する生物種: Pseudomonas sp. (strain 101); 詳細
• タンパク質・核酸の鎖数: 2
• 化学式量合計: 38758.64

構造登録者

Wlodawer, A.,Li, M.,Gustchina, A.,Dauter, Z.,Uchida, K.,Oyama, H.,Goldfarb, N.E.,Dunn, B.M.,Oda, K. (登録日: 2018-08-23, 公開日: 2018-10-24, 最終更新日: 2023-10-11)

主引用文献

Wlodawer, A.,Li, M.,Gustchina, A.,Dauter, Z.,Uchida, K.,Oyama, H.,Goldfarb, N.E.,Dunn, B.M.,Oda, K.
Inhibitor complexes of the Pseudomonas serine-carboxyl proteinase
Biochemistry, 40:15602-15611, 2001

PubMed Abstract: Crystal structures of the serine-carboxyl proteinase from Pseudomonas sp. 101 (PSCP), complexed with a number of inhibitors, have been solved and refined at high- to atomic-level resolution. All of these inhibitors (tyrostatin, pseudo-tyrostatin, AcIPF, AcIAF, and chymostatin, as well as previously studied iodotyrostatin and pseudo-iodotyrostatin) make covalent bonds to the active site Ser287 through their aldehyde moieties, while their side chains occupy subsites S1-S4 of the enzyme. The mode of binding of the inhibitors is almost identical for their P1 and P2 side chains, while significant differences are observed for P3 and P4 (if present). Kinetic parameters for the binding of these nanomolar inhibitors to PSCP have been established and correlated with the observed mode of binding. The preferences of this enzyme for a larger side chain in P2 as well as Tyr or Phe in P1 are explained by the size, shape, and characteristics of the S2 and S1 regions of the protein structure, respectively. Networks of hydrogen bonds involving glutamic and aspartic acids have been analyzed for the atomic-resolution structure of the native enzyme. PSCP contains a calcium-binding site that consists of Asp328, Asp348, three amide carbonyl groups, and a water molecule, in almost perfect octahedral coordination. The presence of Ca(2+) cation is necessary for the activity of the enzyme.

PubMed: 11747435
DOI: 10.1021/bi011817n

実験手法

X-RAY DIFFRACTION (2 Å)