蛋白质网络在拓学的特异性和稳定性
1Department of Physics, Brookhaven National Laboratory, Upton, NY 11973, USA. maslov@bnl.gov
概括
细胞分子网络,包括蛋白质相互作用和遗传调节,显示出非随机结构. 这种组织抑制了功能模块之间的交叉通话,增强了细胞对干扰的强度.
科学领域:
- 分子生物学分子生物学
- 系统生物学 系统生物学
- 生物化学 生物化学
背景情况:
- 细胞生化是由复杂的分子网络控制的.
- 这些网络包括蛋白质-蛋白质相互作用和遗传调节网络.
- 了解这些网络的拓对于理解细胞功能至关重要.
研究的目的:
- 分析细胞中分子网络的拓性质.
- 将观察到的网络结构与随机网络模型进行比较.
- 调查网络架构如何影响细胞稳定性和交叉通话.
主要方法:
- 蛋白质相互作用和遗传调节网络中的节点连接之间的量化相关性.
- 采用一个零模型,涉及网络链接的随机重新布线.
- 分析了高度连接和低连接节点之间的链接分布.
主要成果:
- 相互作用和调节网络都表现出高度连接的蛋白质之间的联系的抑制.
- 观察到一种偏好是高度连接和低连接的蛋白质对之间的链接.
- 这种非随机拓与随机网络模型有显著的差异.
结论:
- 观察到的网络拓学最小化了不同的细胞功能模块之间的交叉通话.
- 这种结构组织增强了蜂网络的整体稳定性.
- 这些发现提供了关于分子网络设计细胞稳定性的原理的见解.
相关概念视频
Protein Folding
Overview
Protein and Protein Structure
Proteins are one of the most abundant organic molecules in living systems and have the most diverse range of functions of all macromolecules. Proteins may be structural, regulatory, contractile, or protective. They may serve in transport, storage, or membranes; or they may be toxins or enzymes. Their structures, like their functions, vary greatly. They are all, however, amino acid polymers arranged in a linear sequence.
A protein's shape is critical to its function. For example, an enzyme can...
A protein's shape is critical to its function. For example, an enzyme can...
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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 Folding
Proteins are chains of amino acids linked together by peptide bonds. Upon synthesis, a protein folds into a three-dimensional conformation, critical to its biological function. Interactions between its constituent amino acids guide protein folding, and hence the protein structure is primarily dependent on its amino acid sequence.
Protein Structure Is Critical to Its Biological Function
Proteins perform a wide range of biological functions such as catalyzing chemical reactions, providing...
Protein Structure Is Critical to Its Biological Function
Proteins perform a wide range of biological functions such as catalyzing chemical reactions, providing...
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,...
Globular Proteins
In organisms, proteins are the most abundant macromolecules. They act as the building blocks of life and play various crucial roles in the body. Proteins can be broadly classified into two distinct subtypes based on their shape and solubilities: globular proteins and fibrous proteins.
Globular proteins serve many important physiological functions, such as acting as enzymes, cellular messengers, and molecular transporters. These roles often require the proteins to be soluble in the aqueous...
Globular proteins serve many important physiological functions, such as acting as enzymes, cellular messengers, and molecular transporters. These roles often require the proteins to be soluble in the aqueous...


