4EY0

Structure of tandem SH2 domains from PLCgamma1

4EY0 の概要

• エントリーDOI: 10.2210/pdb4ey0/pdb
• 分子名称: 1-phosphatidylinositol 4,5-bisphosphate phosphodiesterase gamma-1 (2 entities in total)
• 機能のキーワード: sh2 domain, plcgamma specific array, interaction domain, fibroblast growth factor receptor 1, hydrolase
• 由来する生物種: Homo sapiens (human)
• 細胞内の位置: Cell projection, lamellipodium: P19174
• タンパク質・核酸の鎖数: 4
• 化学式量合計: 114504.58

構造登録者

Cole, A.R.,Mas-Droux, C.P.,Bunney, T.D.,Katan, M. (登録日: 2012-05-01, 公開日: 2012-10-31, 最終更新日: 2024-11-20)

主引用文献

Bunney, T.D.,Esposito, D.,Mas-Droux, C.,Lamber, E.,Baxendale, R.W.,Martins, M.,Cole, A.,Svergun, D.,Driscoll, P.C.,Katan, M.
Structural and Functional Integration of the PLCgamma Interaction Domains Critical for Regulatory Mechanisms and Signaling Deregulation.
Structure, 20:2062-2075, 2012

PubMed Abstract: Multidomain proteins incorporating interaction domains are central to regulation of cellular processes. The elucidation of structural organization and mechanistic insights into many of these proteins, however, remain challenging due to their inherent flexibility. Here, we describe the organization and function of four interaction domains in PLCγ1 using a combination of structural biology and biochemical approaches. Intramolecular interactions within the regulatory region center on the cSH2 domain, the only domain that also interacts with the PLC-core. In the context of fibroblast growth-factor receptor signaling, the coordinated involvement of nSH2 and cSH2 domains mediates efficient phosphorylation of PLCγ1 resulting in the interruption of an autoinhibitory interface by direct competition and, independently, dissociation of PLCγ1 from the receptor. Further structural insights into the autoinhibitory surfaces provide a framework to interpret gain-of-function mutations in PLCγ isoforms linked to immune disorders and illustrate a distinct mechanism for regulation of PLC activity by common interaction domains.

PubMed: 23063561
DOI: 10.1016/j.str.2012.09.005

実験手法

X-RAY DIFFRACTION (2.8 Å)