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Metal-Ligand Bonds02:51

Metal-Ligand Bonds

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The hemoglobin in the blood, the chlorophyll in green plants, vitamin B-12, and the catalyst used in the manufacture of polyethylene all contain coordination compounds. Ions of the metals, especially the transition metals, are likely to form complexes.
In these complexes, transition metals form coordinate covalent bonds, a kind of Lewis acid-base interaction in which both of the electrons in the bond are contributed by a donor (Lewis base) to an electron acceptor (Lewis acid). The Lewis acid in...
20.6K

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Structure and Coordination Determination of Peptide-metal Complexes Using 1D and 2D 1H NMR
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通过金属协调约束来提高宏分子结构的精细化.

Kaveh H Babai1, Fei Long2, Martin Malý3

  • 1Institute of Molecular Biology and Biotechnology, Ministry of Science and Education, 11 Izzat Nabiyev, Baku, Azerbaijan.

Acta crystallographica. Section D, Structural biology
|December 3, 2024
PubMed
概括
此摘要是机器生成的。

准确地建模蛋白质中的金属协调是具有挑战性的. 这项研究介绍了MetalCoord,这是一个从数据库中分析金属结合几何学的程序,改进了结构生物学计算.

关键词:
低温电磁波冷却器 (Cryo-EM) 是一个非常好的方法.宏分子晶体学 宏分子晶体学金属协调几何学精炼 refinement 精炼 refinement 精炼 refinement 精炼 refinement 精炼 refinement 精炼 refinement 精炼 refinement 精炼 refinement 精炼座椅上的安全套.

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科学领域:

  • 结构生物学是结构生物学.
  • 生物化学 生物化学
  • 计算化学是一种计算化学.

背景情况:

  • 金属对于蛋白质的结构和功能至关重要.
  • 精确建模金属协调几何学是复杂和具有挑战性的.
  • 现有的方法与金属协调环境的多样性作斗争.

研究的目的:

  • 开发一种用于提取和分析金属协调信息的方法.
  • 创建一个程序 (MetalCoord) 用于分类和利用金属坐标几何.
  • 为了提高宏分子结构精细化的准确性.

主要方法:

  • 从晶体学开放数据库中提取协调数据 (纽带长度,角度).
  • 使用PDB/mmCIF文件生成立体化学信息.
  • 从图书馆中将衍生金属结构与理想化的几何形状相匹配.
  • 制定编制距离和角度统计数据的策略,以进行改进.

主要成果:

  • 一个新的程序,MetalCoord,被开发和实施.
  • 金属Coord有效地分类和利用金属协调几何学.
  • 为CCP4单体库生成了更新的含金属元件.
  • 衍生约束增强了结构生物学计算.

结论:

  • 该MetalCoord程序提供了一个强大的方法来分析金属协调.
  • 更新的单体字典和束提高了宏分子结构的精细化.
  • 开发的方法适用于各种结构生物学技术,如晶体学和冷EM.