関連する実験動画
Updated: May 19, 2026

11:12
Identification of protein complexes with quantitative proteomics in S. cerevisiae
Published on: March 4, 2009
Saccharomyces cerevisiaeにおける膜タンパク質複合体の相互作用の風景
Mohan Babu1, James Vlasblom, Shuye Pu
1Banting and Best Department of Medical Research, Donnelly Centre, 160 College Street, University of Toronto, Toronto, Ontario M5S 3E1, Canada.
Nature
|September 4, 2012
まとめ
この研究では,酵母膜タンパク質 (MPs) のタンパク質相互作用をマッピングし,新しい物理的関連や複合体を明らかにしました. それは,細胞生物学と疾患を理解するために不可欠な膜相互作用体の全体的な見方を提供します.
科学分野:
- 細胞生物学 細胞生物学
- プロテオミクス プロテオミクスは,プロテオミクスの
- バイオケミストリー バイオケミストリー
背景:
- 膜タンパク質 (MP) は,生物学的機能と病気の治療に不可欠です.
- 以前の研究は,溶解性タンパク質に焦点を当て,MP複合体をほとんど特徴づけることができませんでした.
- MPの相互作用に関するグローバルな理解が必要である.
研究 の 目的:
- 膜タンパク質複合体の属性をSaccharomyces cerevisiaeにグローバルに特徴づけるために.
- 議員の高度な信頼性の物理的相互作用マップを作成する.
- ユカリオット膜生物学における新しい物理的関連性を明らかにする.
主な方法:
- 非デナチュレーション剤を使用した1,590の推定MPのアフィニティ浄化.
- タンデム質量スペクトロメトリーによる共同浄化タンパク質の識別.
- 特定されたタンパク質から物理的な相互作用マップの構築.
主要な成果:
- 1,726の膜タンパク質-タンパク質相互作用のマップを生成しました.
- 細胞膜に関連した501の推定ヘテロメア複合体を特定しました.
- 膜インタラクターム内の予期せぬ物理的関連性を明らかにした.
結論:
- この研究は,酵母膜タンパク質複合体の最初の世界的な特徴付けを提供します.
- この発見は,膜インタラクトームのトポロジカルランドスケープについての洞察を提供します.
- このリソースは,細胞膜生物学と薬剤発見の将来の研究に価値があります.
関連する概念動画
Protein Complexes with Interchangeable Parts
Groups of proteins may form a complex where each protein in this complex has a different role in the overall execution of the complex’s function. Often some of the proteins in the complex can be replaced by a closely related variant to give a complex that contains many of the same components yet is functionally distinct.
The SCF ubiquitin ligase is a protein complex of five individual proteins. This complex attaches ubiquitin to other target proteins to mark them for degradation. In order to...
The SCF ubiquitin ligase is a protein complex of five individual proteins. This complex attaches ubiquitin to other target proteins to mark them for degradation. In order to...
Protein Complexes with Interchangeable Parts
Groups of proteins may form a complex where each protein in this complex has a different role in the overall execution of the complex’s function. Often some of the proteins in the complex can be replaced by a closely related variant to give a complex that contains many of the same components yet is functionally distinct.
The SCF ubiquitin ligase is a protein complex of five individual proteins. This complex attaches ubiquitin to other target proteins to mark them for degradation. In order to...
The SCF ubiquitin ligase is a protein complex of five individual proteins. This complex attaches ubiquitin to other target proteins to mark them for degradation. In order to...
Protein Translocation Machinery on the ER Membrane
The translocon complex situated on the ER membrane is the main gateway for the protein secretory pathway. It facilitates the transport of nascent peptides into the ER lumen and their insertion into the ER membrane.
Sec61 protein conducting channel
In eukaryotes, the translocon complex comprises a core heterotrimeric translocator channel called the Sec61 complex. This channel includes three transmembrane proteins, Sec61α, Sec61β, and Sec61γ, and is the largest subunit of the translocon complex.
Sec61 protein conducting channel
In eukaryotes, the translocon complex comprises a core heterotrimeric translocator channel called the Sec61 complex. This channel includes three transmembrane proteins, Sec61α, Sec61β, and Sec61γ, and is the largest subunit of the translocon complex.
Assembly of Signaling Complexes
Multiprotein signaling complexes are formed in a dynamic process involving protein-protein interactions at the cytoplasmic domain of transmembrane receptors or enzymatic and non-enzymatic proteins associated with the receptor. These complexes ensure the activation and propagation of intracellular signals that regulate cell functions.
Interaction domains in cell signaling
Interaction domains recognize exposed features of their binding partners containing post-translationally modified sequences,...
Interaction domains in cell signaling
Interaction domains recognize exposed features of their binding partners containing post-translationally modified sequences,...
Membrane Asymmetry Regulating Transporters
Enzymes like flippase, floppase, and scramblase transfer phospholipids from one layer to another in the membrane, thereby affecting membrane asymmetry.
Flippase
Eukaryotic flippases are type-IV P-type ATPases or P4-ATPases belonging to P-type ATPase family proteins that are membrane-bound pumps involved in the ATP-mediated transport of ions and molecules across the membrane. Flippases flip specific phospholipids from the outer to the inner leaflet of a membrane. All P4-ATPases have one...
Flippase
Eukaryotic flippases are type-IV P-type ATPases or P4-ATPases belonging to P-type ATPase family proteins that are membrane-bound pumps involved in the ATP-mediated transport of ions and molecules across the membrane. Flippases flip specific phospholipids from the outer to the inner leaflet of a membrane. All P4-ATPases have one...
Protein-protein Interfaces
Many proteins form complexes to carry out their functions, making protein-protein interactions (PPIs) essential for an organism's survival. Most PPIs are stabilized by numerous weak noncovalent chemical forces. The physical shape of the interfaces determines the way two proteins interact. Many globular proteins have closely-matching shapes on their surfaces, which form a large number of weak bonds. Additionally, many PPIs occur between two helices or between a surface cleft and a polypeptide...

