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相关概念视频

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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Conserved Binding Sites01:49

Conserved Binding Sites

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Ligand Binding Sites02:40

Ligand Binding Sites

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Proteins are dynamic macromolecules that carry out a wide variety of essential processes; however, the activities of most proteins depend on their interactions with other molecules or ions, known as ligands.
Protein-ligand interactions are quite specific; even though numerous potential ligands surround a cellular protein at any given time, only a particular ligand can bind to that protein. Moreover, a ligand binds only to a dedicated area on the surface of the protein, known as the...
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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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Protein-Protein Interfaces02:04

Protein-Protein Interfaces

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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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相关实验视频

Updated: Jan 10, 2026

A Protocol for Computer-Based Protein Structure and Function Prediction
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在公用事业级量子处理器上预测蛋白质结合点结构的量子框架.

Yuqi Zhang1,2, Yuxin Yang2, William Martin2

  • 1Department of Computer Science, Kent State University, Kent, OH, 44240, USA.

Advanced science (Weinheim, Baden-Wurttemberg, Germany)
|November 29, 2025
PubMed
概括
此摘要是机器生成的。

一个新的量子计算框架准确地预测了蛋白质活性位结构,超过了当前的AlphaFold3.3等方法. 这种方法使用变量量子Eigensolver (VQE) 进行实际的近期量子硬件应用.

关键词:
蛋白质结构预测 蛋白质结构预测量子计算是一种量子计算.量子结构生物学 量子结构生物学真实量子处理器的量子处理器.

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科学领域:

  • 量子计算是一种量子计算.
  • 结构生物学 结构生物学
  • 计算化学计算化学

背景情况:

  • 准确的蛋白质活性部位结构预测至关重要,但对于短,灵活的片段来说具有挑战性.
  • 传统和基于模拟的方法经常与这些复杂的结构作斗争.

研究的目的:

  • 开发一个量子计算框架,用于预测在实用级量子处理器上的蛋白质活性位结构.
  • 为了解决小,灵活的片的现有方法的局限性.

主要方法:

  • 利用变量量子Eigensolver (VQE) 将结构预测框架作为基本状态能量最小化问题.
  • 用稀疏的保利运算符将编码的氨基酸连接性和约束 (固态,几何,奇拉性) 转化为特定问题的哈密尔顿式.
  • 在量子处理器上实现了用于能源估计和减噪测量解码的两级架构.

主要成果:

  • 使用IBM-克利夫兰诊所量子处理器,对30个蛋白质碎片进行了量子框架的评估,包括治疗目标.
  • 与AlphaFold3 (AF3) 和经典模拟进行基准测试,量子方法在根-平均-平方偏差 (RMSD) 中表现出卓越的性能.
  • 与AF3和经典基线相比,量子方法还显示了更好的对接效率.

结论:

  • 开发的量子计算框架提供了一个实用的端到端管道,用于在真实量子硬件上预测生物相关的蛋白质结构.
  • 该研究强调了近期量子设备的工程可行性和潜力,以应对复杂的结构生物学挑战.
  • 这种量子方法在特定蛋白质片段预测任务的准确性和有效性方面超过了当前最先进的方法.