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相关概念视频

Metal-Ligand Bonds02:51

Metal-Ligand Bonds

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...
Ligand Binding and Linkage00:49

Ligand Binding and Linkage

Allosteric proteins have more than one ligand binding site; the binding of a ligand to any of these sites influences the binding of ligands to the other sites. When a protein is allosteric, its binding sites are called coupled or linked.  In the case of enzymes, the site that binds to the substrate is known as the active site and the other site is known as the regulatory site. When a ligand binds to the regulatory site, this leads to conformational changes in the protein that can influence the...
VSEPR Theory02:37

VSEPR Theory

Valence shell electron-pair repulsion theory (VSEPR theory) enables us to predict the molecular structure around a central atom from an examination of the number of bonds and lone electron pairs in its Lewis structure. The VSEPR model assumes that electron pairs in the valence shell of a central atom will adopt an arrangement that minimizes repulsions between these electron pairs by maximizing the distance between them. The electrons in the valence shell of a central atom form either bonding...

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相关实验视频

Updated: Jun 30, 2026

Controlling the Size, Shape and Stability of Supramolecular Polymers in Water
16:24

Controlling the Size, Shape and Stability of Supramolecular Polymers in Water

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一个可扩展的设计,用于接近诱导分子.

Endri Karaj, Varsha Venkatarangan, Shaimaa H Sindi

    bioRxiv : the preprint server for biology
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    PubMed
    概括
    此摘要是机器生成的。

    我们开发了用于诱导近距离 (GRIPs) 的组转移嵌合体,这是一个可扩展的修改蛋白质的平台. GRIPs使用丰富的效应因子抑制剂来精确编辑用于新的治疗应用的翻译后修改 (PTM).

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    相关实验视频

    Last Updated: Jun 30, 2026

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    科学领域:

    • 生物化学 生物化学
    • 化学生物学 化学生物学
    • 分子生物学分子生物学

    背景情况:

    • 化学分子,如PROTACs,通过将效应酶与感兴趣的蛋白质 (POI) 联系起来,使得有针对性的蛋白质修饰成为可能.
    • 目前的嵌合体技术面临着可扩展性的局限性,因为它们依赖于罕见的,非抑制的效应结合剂.

    研究的目的:

    • 开发一个可扩展和多功能平台,用于蛋白质后翻译修改 (PTM) 编辑.
    • 为了改进治疗应用,利用丰富的功效抑制剂设计新型的嵌合体.

    主要方法:

    • 开发用于诱导近距离 (GRIPs) 的组转移模拟器,使用效应器抑制剂和组转移手柄.
    • 在3个PTM中创建6个GRIP类,测试16个效应器-POI对,以及42个组转移处理器的工具箱.
    • 利用全球蛋白质组学来确认特异性,并在内源性和标记蛋白质系统中使用GRIP.

    主要成果:

    • 在各种PTM和效应器-POI对中展示了GRIP的可扩展性.
    • 通过蛋白质组学确认了组转移和PTM编辑的特异性.
    • 展示了包括持续抑制,防止反弹信号和内源系统中途径激活在内的新功能.
    • 在 hemi-endogenous 系统中实现了凝结物形成,致病性 PTM 清除和 PTM 交叉通话的启动.

    结论:

    • GRIPs为精确的PTM编辑提供了一个可扩展和适应的平台.
    • 这项技术通过赋予POI药物新功能,使新的治疗策略成为可能.
    • GRIPs推进了针对性蛋白质修饰领域的广泛应用.