酵母菌Saccharomyces cerevisiae中的蛋白质复合物的全球景观
Nevan J Krogan1, Gerard Cagney, Haiyuan Yu
1Banting and Best Department of Medical Research, Terrence Donnelly Centre for Cellular and Biomolecular Research, University of Toronto, 160 College St, Toronto, Ontario M5S 3E1, Canada.
Nature
|March 24, 2006
概括
研究人员使用质谱学和机器学习绘制了酵母中的蛋白质-蛋白质相互作用. 这项研究确定了数千种相互作用,揭示了数百种对细胞过程至关重要的蛋白质复合体.
科学领域:
- 分子生物学分子生物学
- 蛋白质组学是指蛋白质组学.
- 系统生物学 系统生物学
背景情况:
- 蛋白质与蛋白质之间的相互作用是细胞过程的基础.
- 了解这些相互作用是解读蛋白质功能和生物机制的关键.
- 许多细胞功能是由稳定的蛋白质复合体执行的.
研究的目的:
- 系统地识别和绘制酵母菌Saccharomyces cerevisiae中的蛋白质与蛋白质相互作用.
- 建立一个关于蛋白质复合体及其子单元组成的全面数据集.
- 为功能基因组学和系统生物学研究提供一个有价值的资源.
主要方法:
- 利用联亲和性净化来隔离酵母中标记的蛋白质.
- 采用矩阵辅助激光脱/离子化飞行时间 (MALDI-TOF) 和液体染色学双重质谱法 (LC-MS/MS) 来识别蛋白质.
- 应用机器学习算法来整合质谱数据并分配相互作用概率.
主要成果:
- 成功净化和分析了4,562个标记的蛋白质.
- 确定了7123个高可信度的蛋白质与蛋白质相互作用,涉及2708种蛋白质.
- 发现了547个蛋白质复合体和429个复合体之间的相互作用,其中许多复合体以前没有被目录.
结论:
- 该研究提供了酵母蛋白与蛋白相互作用和蛋白质复合物的大规模地图.
- 这一全面的数据集是了解细胞功能和推进系统生物学的宝贵资源.
- 这些发现促进了对单个蛋白质和复杂生物通路的未来研究.
相关概念视频
Protein Complex Assembly
Proteins can form homomeric complexes with another unit of the same protein or heteromeric complexes with different types. Most protein complexes self-assemble spontaneously via ordered pathways, while some proteins need assembly factors that guide their proper assembly. Despite the crowded intracellular environment, proteins usually interact with their correct partners and form functional complexes.
Many viruses self-assemble into a fully functional unit using the infected host cell to...
Many viruses self-assemble into a fully functional unit using the infected host cell 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 Networks
An organism can have thousands of different proteins, and these proteins must cooperate to ensure the health of an organism. Proteins bind to other proteins and form complexes to carry out their functions. Many proteins interact with multiple other proteins creating a complex network of protein interactions.
These interactions can be represented through maps depicting protein-protein interaction networks, represented as nodes and edges. Nodes are circles that are representative of a protein,...
These interactions can be represented through maps depicting protein-protein interaction networks, represented as nodes and edges. Nodes are circles that are representative of a protein,...
Protein Complex Assembly
Proteins can form homomeric complexes with another unit of the same protein or heteromeric complexes with different types. Most protein complexes self-assemble spontaneously via ordered pathways, while some proteins need assembly factors that guide their proper assembly. Despite the crowded intracellular environment, proteins usually interact with their correct partners and form functional complexes.
Many viruses self-assemble into a fully functional unit using the infected host cell to...
Many viruses self-assemble into a fully functional unit using the infected host cell 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 Networks
An organism can have thousands of different proteins, and these proteins must cooperate to ensure the health of an organism. Proteins bind to other proteins and form complexes to carry out their functions. Many proteins interact with multiple other proteins creating a complex network of protein interactions.
These interactions can be represented through maps depicting protein-protein interaction networks, represented as nodes and edges. Nodes are circles that are representative of a protein,...
These interactions can be represented through maps depicting protein-protein interaction networks, represented as nodes and edges. Nodes are circles that are representative of a protein,...


