アラビドプシスのリピート受容体キナーズの細胞外ネットワーク
Elwira Smakowska-Luzan1, G Adam Mott2, Katarzyna Parys1
1Gregor Mendel Institute (GMI), Austrian Academy of Sciences, Vienna Biocenter (VBC), Dr Bohr-Gasse 3, 1030 Vienna, Austria.
Nature
|January 11, 2018
まとめ
科学者は,レウシンに富んだリピート受容体キナーゼ (LRR-RKs) がどのようにネットワークを形成するかを理解するために,植物細胞表面の相互作用をマッピングしました. 複雑な受容体相互作用を通して 成長と免疫信号のバランスをとる方法を明らかにしています
科学分野:
- 植物分子生物学
- セル・シグナル
- システム生物学
背景:
- 細胞表面受容体は信号伝達のために細胞外ドメイン (ECD) を利用するが,その相互作用は研究しにくい.
- 植物にはレセプターキナーゼ (LRR-RKs) が多くあり,相互作用の研究を複雑にしています.
- LRR-RKネットワークの組織を理解することは,植物の発達と免疫に不可欠です.
研究 の 目的:
- アラビドプシス・タリアナのLRR-RKのシステムレベルの組織を調査する.
- 細胞表面LRR-RK相互作用の包括的な地図を作成する.
- LRR-RK関数を予測するためのこのネットワークの有用性を実証する.
主な方法:
- 4万件の潜在的なECD相互作用をスクリーニングするために,高通量相互作用アッセイが使用されました.
- LRRベースの細胞表面相互作用ネットワーク (CSI) が構築された.
- 生物情報学的予測と実験的検証がLRR-RK機能を特定するために使用された.
主要な成果:
- 567のLRR- RK相互作用 (CSILRR) のネットワークが特定されました.
- この研究では,以前に特徴づけられていなかったLRR-RKsの植物成長と免疫における機能を予測し,検証した.
- 主要なLRR-RKは,ネットワークの完全性を維持し,遠隔の受容体での異常信号を防ぐことが示されました.
結論:
- CSILRRネットワークは,植物受容体キナーゼシグナル伝達を理解するための強力なツールを提供します.
- 植物は組織化されたLRR-RKネットワークを使って 細胞外信号をバランスのとれた生理学的反応に変換します
- このネットワークの組織は 植物の成長と免疫機能の制御に不可欠です
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