5CGI

Yeast 20S proteasome beta5-G48C mutant in complex with ONX 0914

5CGI の概要

• エントリーDOI: 10.2210/pdb5cgi/pdb
• 関連するPDBエントリー: 1RYP
• 関連するBIRD辞書のPRD_ID: PRD_000991
• 分子名称: Proteasome subunit alpha type-2, Proteasome subunit beta type-4, Proteasome subunit beta type-5, ... (20 entities in total)
• 機能のキーワード: hydrolase-hydrolase inhibitor complex, proteasome, mutant, inhibitor, binding analysis, hydrolase/hydrolase inhibitor
• 由来する生物種: Saccharomyces cerevisiae (strain ATCC 204508 / S288c) (Baker's yeast); 詳細
• タンパク質・核酸の鎖数: 28
• 化学式量合計: 735743.45

構造登録者

Dubiella, C.,Groll, M. (登録日: 2015-07-09, 公開日: 2015-11-25, 最終更新日: 2024-10-23)

主引用文献

Dubiella, C.,Baur, R.,Cui, H.,Huber, E.M.,Groll, M.
Selective Inhibition of the Immunoproteasome by Structure-Based Targeting of a Non-catalytic Cysteine.
Angew.Chem.Int.Ed.Engl., 54:15888-15891, 2015

PubMed Abstract: Clinically applied proteasome inhibitors induce cell death by concomitant blockage of constitutive and immunoproteasomes. In contrast, selective immunoproteasome inhibition is less cytotoxic and has the potential to modulate chronic inflammation and autoimmune diseases. In this study, we rationally designed decarboxylated peptides that covalently target a non-catalytic cysteine of the immunoproteasome subunit β5i with α-chloroacetamide-containing sidechains. The enhanced isoform specificity decreased cytotoxic effects and the compound suppressed the production of inflammatory cytokines. Structure-based optimization led to over 150-fold selectivity for subunit β5i over β5c. This new compound class provides a promising starting point for the development of selective immunoproteasome inhibitors as potential anti-inflammatory agents.

PubMed: 26563572
DOI: 10.1002/anie.201506631

実験手法

X-RAY DIFFRACTION (2.8 Å)