7Z1R

X-ray crystal structure of SLPYL1-E151D mutant ABA complex

これはPDB形式変換不可エントリーです。

7Z1R の概要

• エントリーDOI: 10.2210/pdb7z1r/pdb
• 関連するPDBエントリー: 5MOA 5MOB
• 分子名称: SlPYL1-E151D ABA, (2Z,4E)-5-[(1S)-1-hydroxy-2,6,6-trimethyl-4-oxocyclohex-2-en-1-yl]-3-methylpenta-2,4-dienoic acid, GLYCEROL, ... (4 entities in total)
• 機能のキーワード: slpyl1, aba receptor protein, plant protein
• 由来する生物種: Solanum lycopersicum (tomato)
• タンパク質・核酸の鎖数: 1
• 化学式量合計: 26172.92

構造登録者

Infantes, L.,Albert, A. (登録日: 2022-02-25, 公開日: 2022-07-13, 最終更新日: 2024-01-31)

主引用文献

Infantes, L.,Rivera-Moreno, M.,Daniel-Mozo, M.,Benavente, J.L.,Ocana-Cuesta, J.,Coego, A.,Lozano-Juste, J.,Rodriguez, P.L.,Albert, A.
Structure-Based Modulation of the Ligand Sensitivity of a Tomato Dimeric Abscisic Acid Receptor Through a Glu to Asp Mutation in the Latch Loop.
Front Plant Sci, 13:884029-884029, 2022

PubMed Abstract: The binding of the plant phytohormone Abscisic acid (ABA) to the family of ABA receptors (PYR/PYL/RCAR) triggers plant responses to abiotic stress. Thus, the implementation of genetic or chemical strategies to modulate PYR/PYL activity might be biotechnologically relevant. We have employed the available structural information on the PYR/PYL receptors to design SlPYL1, a tomato receptor, harboring a single point mutation that displays enhanced ABA dependent and independent activity. Interestingly, crystallographic studies show that this mutation is not directly involved in ABA recognition or in the downstream phosphatase (PP2C) inhibitory interaction, rather, molecular dynamic based ensemble refinement restrained by crystallographic data indicates that it enhances the conformational variability required for receptor activation and it is involved in the stabilization of an active form of the receptor. Moreover, structural studies on this receptor have led to the identification of niacin as an ABA antagonist molecule . We have found that niacin blocks the ABA binding site by mimicking ABA receptor interactions, and the niacin interaction inhibits the biochemical activity of the receptor.

PubMed: 35734246
DOI: 10.3389/fpls.2022.884029

実験手法

X-RAY DIFFRACTION (1.601 Å)