1XQY

Crystal structure of F1-mutant S105A complex with PRO-LEU-GLY-GLY

1XQY の概要

• エントリーDOI: 10.2210/pdb1xqy/pdb
• 関連するPDBエントリー: 1MT3 1MTZ 1MU0 1XQV 1XQW 1XQX
• 分子名称: Proline iminopeptidase, PLGG, PROLINE, ... (4 entities in total)
• 機能のキーワード: alpha-beta hydrolase, caged active site, catalytic triad, nucleophile, peptide cleavage, hydrolase
• 由来する生物種: Thermoplasma acidophilum; 詳細
• タンパク質・核酸の鎖数: 2
• 化学式量合計: 33971.61

構造登録者

Goettig, P.,Brandstetter, H.,Groll, M.,Goehring, W.,Konarev, P.V.,Svergun, D.I.,Huber, R.,Kim, J.-S. (登録日: 2004-10-13, 公開日: 2005-07-12, 最終更新日: 2024-11-06)

主引用文献

Goettig, P.,Brandstetter, H.,Groll, M.,Goehring, W.,Konarev, P.V.,Svergun, D.I.,Huber, R.,Kim, J.-S.
X-ray snapshots of peptide processing in mutants of tricorn-interacting factor F1 from Thermoplasma acidophilum
J.Biol.Chem., 280:33387-33396, 2005

PubMed Abstract: The tricorn-interacting factor F1 of the archaeon Thermoplasma acidophilum cleaves small hydrophobic peptide products of the proteasome and tricorn protease. F1 mutants of the active site residues that are involved in substrate recognition and catalysis displayed distinct activity patterns toward fluorogenic test substrates. Crystal structures of the mutant proteins complexed with peptides Phe-Leu, Pro-Pro, or Pro-Leu-Gly-Gly showed interaction of glutamates 213 and 245 with the N termini of the peptides and defined the S1 and S1' sites and the role of the catalytic residues. Evidence was found for processive peptide cleavage in the N-to-C direction, whereby the P1' product is translocated into the S1 site. A functional interaction of F1 with the tricorn protease was observed with the inactive F1 mutant G37A. Moreover, small angle x-ray scattering measurements for tricorn and inhibited F1 have been interpreted as formation of transient and substrate-induced complexes.

PubMed: 15994304
DOI: 10.1074/jbc.M505030200

実験手法

X-RAY DIFFRACTION (3.2 Å)