工程 de novo膜介导的蛋白质-蛋白质通信网络
Kalypso Charalambous1, Paula J Booth, Rudiger Woscholski
1Institute of Chemical Biology and Department of Chemistry, Imperial College London, Exhibition Road, London SW7 2AZ, UK. k.charalabous@imperial.ac.uk
Journal of the American Chemical Society
|March 21, 2012
概括
生物膜利用纳米级机械能量使蛋白质通信成为可能. 这项研究表明,膜力学如何触发蛋白相互作用,揭示了一条新的信号通路.
科学领域:
- 生物物理学的生物物理.
- 细胞生物学 细胞生物学
- 生物化学 生物化学
背景情况:
- 膜蛋白的功能是由机械性质调节的.
- 目前的蛋白质通信模型忽略了机械相互作用.
研究的目的:
- 为了证明蛋白质通信的纳米级机械能量转移.
- 为了研究通过膜介导的蛋白质与蛋白质相互作用.
主要方法:
- 合脂质-蛋白质模块具有特定的膜机械反应.
- 使用脂酶A(2) 触发机械敏感通道MscL的开放.
主要成果:
- 膜内的机械能量可以促进受控的蛋白质通信.
- 由脂酶A(2) 作用产生的膜不对称性打开了 MscL.
- 全球膜的物理特性作为信息通路.
结论:
- 发现了一种通过膜介导的蛋白质-蛋白质通信的新机制.
- 这些发现影响了对信号通路和体内网络的理解.
- 提供人工蛋白质网络的构建块.
相关概念视频
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 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,...
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Different physical properties of lipids and proteins allow them to localize and form distinct islands or domains in the membrane. Some membrane domains are formed due to protein-protein interactions, whereas others are formed due to the presence of specific lipids such as sphingolipids and sterols—for example, large proteins, such as bacteriorhodopsin, aggregate and create distinct domains.
Another mechanism for membrane domain formation involves membrane proteins interacting with cytoskeletal...
Another mechanism for membrane domain formation involves membrane proteins interacting with cytoskeletal...
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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,...
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Integral transmembrane proteins possess transmembrane and extra membrane domains. The transmembrane domains are primarily made of 20-25 hydrophobic amino acids arranged in a helical secondary confirmation. These...
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