4I1H

Structure of Parkin E3 ligase

4I1H の概要

• エントリーDOI: 10.2210/pdb4i1h/pdb
• 関連するPDBエントリー: 4I1F
• 分子名称: E3 ubiquitin-protein ligase parkin, ZINC ION (3 entities in total)
• 機能のキーワード: rbr e3 ubiquitin ligase, ligase
• 由来する生物種: Homo sapiens (human)
• 細胞内の位置: Cytoplasm, cytosol : O60260
• タンパク質・核酸の鎖数: 1
• 化学式量合計: 36961.88

構造登録者

Lougheed, J.C.,Brecht, E.,Yao, N.H. (登録日: 2012-11-20, 公開日: 2013-06-19, 最終更新日: 2023-09-20)

主引用文献

Riley, B.E.,Lougheed, J.C.,Callaway, K.,Velasquez, M.,Brecht, E.,Nguyen, L.,Shaler, T.,Walker, D.,Yang, Y.,Regnstrom, K.,Diep, L.,Zhang, Z.,Chiou, S.,Bova, M.,Artis, D.R.,Yao, N.,Baker, J.,Yednock, T.,Johnston, J.A.
Structure and function of Parkin E3 ubiquitin ligase reveals aspects of RING and HECT ligases.
Nat Commun, 4:1982-1982, 2013

PubMed Abstract: Parkin is a RING-between-RING E3 ligase that functions in the covalent attachment of ubiquitin to specific substrates, and mutations in Parkin are linked to Parkinson's disease, cancer and mycobacterial infection. The RING-between-RING family of E3 ligases are suggested to function with a canonical RING domain and a catalytic cysteine residue usually restricted to HECT E3 ligases, thus termed 'RING/HECT hybrid' enzymes. Here we present the 1.58 Å structure of Parkin-R0RBR, revealing the fold architecture for the four RING domains, and several unpredicted interfaces. Examination of the Parkin active site suggests a catalytic network consisting of C431 and H433. In cells, mutation of C431 eliminates Parkin-catalysed degradation of mitochondria, and capture of an ubiquitin oxyester confirms C431 as Parkin's cellular active site. Our data confirm that Parkin is a RING/HECT hybrid, and provide the first crystal structure of an RING-between-RING E3 ligase at atomic resolution, providing insight into this disease-related protein.

PubMed: 23770887
DOI: 10.1038/ncomms2982

実験手法

X-RAY DIFFRACTION (2 Å)