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相关概念视频

Molecular Models02:00

Molecular Models

43.4K
Physical models representing molecular architectures of chemical compounds play essential roles in understanding chemistry. The use of molecular models makes it easier to visualize the structures and shapes of atoms and molecules.
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Protein Organization01:13

Protein Organization

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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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Protein Complexes with Interchangeable Parts01:57

Protein Complexes with Interchangeable Parts

2.9K
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...
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Protein Complexes with Interchangeable Parts01:57

Protein Complexes with Interchangeable Parts

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Conserved Binding Sites01:49

Conserved Binding Sites

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Many proteins’ biological role depends on their interactions with their ligands, small molecules that bind to specific locations on the protein known as ligand-binding sites. Ligand-binding sites are often conserved among homologous proteins as these sites are critical for protein function.
Binding sites are often located in large pockets, and if their location on a protein’s surface is unknown, it can be predicted using various approaches. The energetic method computationally...
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相关实验视频

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Modeling an Enzyme Active Site using Molecular Visualization Freeware
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使用PLACER模型建模蛋白质小分子构造组合.

Ivan Anishchenko1,2, Yakov Kipnis1,2,3, Indrek Kalvet1,2,3

  • 1Department of Biochemistry, University of Washington, Seattle, WA 98105.

Proceedings of the National Academy of Sciences of the United States of America
|November 4, 2025
PubMed
概括

我们开发了PLACER,这是一个图形神经网络,用于蛋白质 - 连接体原子结构整体解析. 这种工具快速生成多样化的分子结构,改善酶设计和预测蛋白质-小分子相互作用.

关键词:
酶设计 酶设计带对接对接器机器学习是机器学习.

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科学领域:

  • 计算化学是一种计算化学.
  • 结构生物学是结构生物学.
  • 人工智能在药物发现中的作用

背景情况:

  • 在蛋白质-小分子相互作用中建模构型异质性至关重要,但具有挑战性.
  • 原子级描述在速度和通用性方面为在折叠状态下探测相互作用提供了潜在的优势.

研究的目的:

  • 开发一种用于建模蛋白质-小分子相互作用的新型计算工具.
  • 为小分子和蛋白质 - 连接体复合体生成精确的原子级构造组合.
  • 通过评估活性位点预组织和精度来增强酶设计.

主要方法:

  • 开发了一个图形神经网络模型PLACER (蛋白质连接体原子形态组合解析器).
  • 在剑桥结构数据库和蛋白质数据库中的受损结构中的原子位置上训练PLACER.
  • 利用PLACER生成小分子结构,蛋白质侧链和蛋白质-小分子对接组合.

主要成果:

  • 根据构成和结合,PLACER精确地产生了各种各样的有机小分子结构.
  • 该模型有效地构建小分子和蛋白质侧链结构以进行对接.
  • 使用PLACER进行活性位点评估的酶设计导致了更高的成功率和活动,包括具有11,000M-1的KM-1的逆相酶.

结论:

  • PLACER提供了一种快速和随机的方法来生成构造组合.
  • 该工具对小分子和蛋白质连接体系统都有效.
  • 在改善酶设计和预测分子相互作用方面,PLACER显示出显著的前景.