4EQ4

Crystal structure of seleno-methionine derivatized GH3.12

4EQ4 の概要

• エントリーDOI: 10.2210/pdb4eq4/pdb
• 分子名称: 4-substituted benzoates-glutamate ligase GH3.12, 2-HYDROXYBENZOIC ACID, ADENOSINE MONOPHOSPHATE, ... (4 entities in total)
• 機能のキーワード: firefly luciferase family, acyl adenylase, amino acid conjugation, ligase
• 由来する生物種: Arabidopsis thaliana (mouse-ear cress,thale-cress)
• タンパク質・核酸の鎖数: 2
• 化学式量合計: 134090.01

構造登録者

Zubieta, C.,Nanao, M.,Jez, J.,Westfall, C.,Kapp, U. (登録日: 2012-04-18, 公開日: 2012-06-20, 最終更新日: 2024-10-09)

主引用文献

Westfall, C.S.,Zubieta, C.,Herrmann, J.,Kapp, U.,Nanao, M.H.,Jez, J.M.
Structural basis for prereceptor modulation of plant hormones by GH3 proteins.
Science, 336:1708-1711, 2012

PubMed Abstract: Acyl acid amido synthetases of the GH3 family act as critical prereceptor modulators of plant hormone action; however, the molecular basis for their hormone selectivity is unclear. Here, we report the crystal structures of benzoate-specific Arabidopsis thaliana AtGH3.12/PBS3 and jasmonic acid-specific AtGH3.11/JAR1. These structures, combined with biochemical analysis, define features for the conjugation of amino acids to diverse acyl acid substrates and highlight the importance of conformational changes in the carboxyl-terminal domain for catalysis. We also identify residues forming the acyl acid binding site across the GH3 family and residues critical for amino acid recognition. Our results demonstrate how a highly adaptable three-dimensional scaffold is used for the evolution of promiscuous activity across an enzyme family for modulation of plant signaling molecules.

PubMed: 22628555
DOI: 10.1126/science.1221863

実験手法

X-RAY DIFFRACTION (2.074 Å)