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相关概念视频

Protein Folding01:22

Protein Folding

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Overview
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Protein Organization01:24

Protein Organization

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Proteins are polymers of amino acid residues. They are versatile and responsible for different cellular functions, including DNA replication, molecular transport, catalysis, and structural support. Proteins have a hierarchical structure comprising at least three levels of organization: primary, secondary, and tertiary structure. Some large proteins have a quaternary structure where individual protein subunits are linked together.
The primary structure of a protein is its amino acid sequence....
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Molecular Chaperones and Protein Folding03:00

Molecular Chaperones and Protein Folding

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The native conformation of a protein is formed by interactions between the side chains of its constituent amino acids. When the amino acids cannot form these interactions, the protein cannot fold by itself and needs chaperones. Notably, chaperones do not relay any additional information required for the folding of polypeptides; the native conformation of a protein is determined solely by its amino acid sequence. Chaperones catalyze protein folding without being a part of the folded protein.
The...
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Conservation of Protein Domains Over Different Proteins02:26

Conservation of Protein Domains Over Different Proteins

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Protein domains are small structurally independent units that are part of a single amino acid chain.  Although these domains are often structurally independent, they may rely on synergistic effects to perform their functions as part of a larger protein. Protein domains may be conserved within the same organism, as well as across different organisms.
A limited set of protein domains often duplicate and recombine during evolution. These domains can be organized in different combinations to...
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Protein-protein Interfaces02:04

Protein-protein Interfaces

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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...
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相关实验视频

Updated: Jun 17, 2025

A Protocol for Computer-Based Protein Structure and Function Prediction
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使用AlphaFold2和分子动力学模拟来模型蛋白质识别.

Hiu Yan Wong1, Kam-Bo Wong2

  • 1School of Life Sciences, Centre for Protein Science and Crystallography, State Key Laboratory of Agrobiotechnology, The Chinese University of Hong Kong, Hong Kong, China.

Methods in molecular biology (Clifton, N.J.)
|August 8, 2024
PubMed
概括

我们使用AlphaFold2.2.预测了Arabidopsis RMR1和CRU1蛋白质复合物的结构. CRU1的C端碳酸盐与RMR1结合,揭示了蛋白质复合体动态的洞察力.

关键词:
分子建模分子建模蛋白质折叠过程中的蛋白质折叠蛋白质相互作用 蛋白质相互作用结构预测结构预测虚空分类的分类.

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Analyzing Protein Architectures and Protein-Ligand Complexes by Integrative Structural Mass Spectrometry
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相关实验视频

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科学领域:

  • 植物分子生物学 植物分子生物学
  • 结构生物学是结构生物学.
  • 计算生物学是一种计算生物学.

背景情况:

  • 阿拉比多普西菌的受体同质性-跨膜-RING-H2异型1 (RMR1) 是一个关键蛋白质,参与细胞过程.
  • 十字素 (CRU1) 含有一种C端分类决定因子 (ctVSD),对其定位至关重要.
  • 了解蛋白质-蛋白质相互作用对于破译细胞机制至关重要.

研究的目的:

  • 用CRU1的C端分类决定子 (CRU1 ctVSD) 预测Arabidopsis RMR1的复杂结构.
  • 用分子动力学模拟来研究预测的蛋白质复合物的动力学.
  • 为建模其他蛋白质复合体提供一个方法框架.

主要方法:

  • 使用AlphaFold2通过ColabFold网络接口进行结构预测.
  • 分子动力学 (MD) 模拟用于分析结构动力学.
  • 在预测的复合体内分析特定的氨基酸相互作用.

主要成果:

  • 预计CRU1 ctVSD的C端碳酸盐组将与RMR1货物结合环中的保存的氨酸89 (Arg89) 相互作用.
  • 预计RMR1货物结合口袋内的负电荷残留物将与CRU1.1的阿金素468 (Arg468) 相互作用.
  • 预测的结构模型揭示了复杂形成至关重要的特定结合接口.

结论:

  • 该研究成功预测了RMR1-CRU1复合体的结构,突出了关键的相互作用部位.
  • 分子动力学模拟为预测复合物的稳定性和动力学提供了洞察力.
  • 描述的方法适用于植物中其他蛋白质与蛋白质相互作用的结构建模.