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Updated: Jul 3, 2025

Functional Characterization of RING-Type E3 Ubiquitin Ligases In Vitro and In Planta

Functional Characterization of RING-Type E3 Ubiquitin Ligases In Vitro and In Planta

Published on: December 5, 2019

通过小分子化合物调节库林-RING E3 基因酶依赖的基因化

Kenneth Wu¹, Robert J DeVita², Zhen-Qiang Pan¹

¹Department of Oncological Sciences, The Icahn School of Medicine at Mount Sinai, New York, New York, USA.

The Journal of biological chemistry

|February 14, 2024

概括

小分子KH-4-43和#33抑制了Cullin (CUL) -RING E3泛素连接酶 (CRL),但根据CRL类型,无化会对它们的疗效产生不同的影响. 苏拉明抑制了CRLs,无论其无化状态如何.

科学领域:

生物化学和分子生物学
药物发现和开发药物发现和开发
结构生物学结构生物学

背景情况:

库林 (CUL) -RING (真正有趣的新基因) E3无素 (Ub) 酶 (CRL) 是最大的E3家族,对蛋白质无化至关重要.
作为CUL-ROC1/RBX1亚复合体的CRL核心酶,作为与E2酶,Ub,Nedd8和ARIH蛋白相互作用的枢纽,促进了Ub转移.
通过小分子调节CRL活性是治疗开发的关键领域.

研究的目的:

通过小分子化合物KH-4-43,#33和suramin对CRL抑制的内滴化影响的研究.
为了确定化是否会改变特定CRL (CRL4CRBN和CRL1β-TrCP) 对这些抑制剂的敏感性.
探索基于结构的药物设计的潜力,针对不同的CRL核心合酶结构.

主要方法:

评估了CRL4^CRBN对CK1α和CRL1^β-TrCP对β-catenin的无处不在,无论是否存在脱.
测试了KH-4-43,#33和苏拉明对CRL依赖的泛化反应的抑制作用.
分析了基于CRL类型和无化状态的差异性药物敏感性.

主要成果:

KH-4-43 和 #33 抑制了 CK1α 的 CRL4^CRBN介导的泛化,但这种抑制被 neddylated CRL4^CRBN降低.
无论是KH-4-43还是#33,都类似地抑制了CRL1^β-TrCP介导的β-catenin的全方位化,无论CRL1^β-TrCP的化状态如何.
苏拉明抑制了CRL1和CRL4无化,而不考虑化,与KH-4-43/#33.33相反.

结论:

化对CRL对KH-4-43和#33抑制的敏感性有不同的影响,具体取决于CRL类型.
苏拉明在整个缩状态的广泛抑制突出了其针对CUL基本峡谷的独特机制.
临床实验室核心链酶的结构多样性为开发特定的小分子调节器提供了机会.

关键词:

在CRL的核心连接酶.在Nedd8修改版中,Nedd8的修改是什么?库林-RING E3 无素结合酶的使用小分子调节器的小分子调节器.无处不在的化

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