4JMK

Structure of dusp8

4JMK の概要

• エントリーDOI: 10.2210/pdb4jmk/pdb
• 関連するPDBエントリー: 4JMJ 4KI9
• 分子名称: Dual specificity protein phosphatase 8, SULFATE ION (3 entities in total)
• 機能のキーワード: alpha/beta hydrolase, hydrolase
• 由来する生物種: Homo sapiens (human)
• タンパク質・核酸の鎖数: 2
• 化学式量合計: 34700.13

構造登録者

Jeong, D.G.,Kim, S.J.,Ryu, S.E. (登録日: 2013-03-14, 公開日: 2014-02-26, 最終更新日: 2023-11-08)

主引用文献

Jeong, D.G.,Wei, C.H.,Ku, B.,Jeon, T.J.,Chien, P.N.,Kim, J.K.,Park, S.Y.,Hwang, H.S.,Ryu, S.Y.,Park, H.,Kim, D.S.,Kim, S.J.,Ryu, S.E.
The family-wide structure and function of human dual-specificity protein phosphatases.
Acta Crystallogr.,Sect.D, 70:421-435, 2014

PubMed Abstract: Dual-specificity protein phosphatases (DUSPs), which dephosphorylate both phosphoserine/threonine and phosphotyrosine, play vital roles in immune activation, brain function and cell-growth signalling. A family-wide structural library of human DUSPs was constructed based on experimental structure determination supplemented with homology modelling. The catalytic domain of each individual DUSP has characteristic features in the active site and in surface-charge distribution, indicating substrate-interaction specificity. The active-site loop-to-strand switch occurs in a subtype-specific manner, indicating that the switch process is necessary for characteristic substrate interactions in the corresponding DUSPs. A comprehensive analysis of the activity-inhibition profile and active-site geometry of DUSPs revealed a novel role of the active-pocket structure in the substrate specificity of DUSPs. A structure-based analysis of redox responses indicated that the additional cysteine residues are important for the protection of enzyme activity. The family-wide structures of DUSPs form a basis for the understanding of phosphorylation-mediated signal transduction and the development of therapeutics.

PubMed: 24531476
DOI: 10.1107/S1399004713029866

実験手法

X-RAY DIFFRACTION (1.9 Å)