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Guilt-by-Association – Functional Insights Gained From Studying the LRRK2 Interactome
Frontiers in Neuroscience ( IF 4.3 ) Pub Date : 2020-05-20 , DOI: 10.3389/fnins.2020.00485
Christian Johannes Gloeckner 1, 2, 3 , Pablo Porras 4
Affiliation  

The Parkinson’s disease-associated Leucine-rich repeat kinase 2 (LRRK2) is a complex multi-domain protein belonging to the Roco protein family, a unique group of G-proteins. Variants of this gene are associated with an increased risk of Parkinson’s disease. Besides its well-characterized enzymatic activities, conferred by its GTPase and kinase domains, and a central dimerization domain, it contains four predicted repeat domains, which are, based on their structure, commonly involved in protein-protein interactions (PPIs). In the past decades, tremendous progress has been made in determining comprehensive interactome maps for the human proteome. Knowledge of PPIs has been instrumental in assigning functions to proteins involved in human disease and helped to understand the connectivity between different disease pathways and also significantly contributed to the functional understanding of LRRK2. In addition to an increased kinase activity observed for proteins containing PD-associated variants, various studies helped to establish LRRK2 as a large scaffold protein in the interface between cytoskeletal dynamics and the vesicular transport. This review first discusses a number of specific LRRK2-associated PPIs for which a functional consequence can at least be speculated upon, and then considers the representation of LRRK2 protein interactions in public repositories, providing an outlook on open research questions and challenges in this field.

中文翻译:

因联想而内疚——从研究 LRRK2 相互作用组中获得的功能见解

帕金森病相关的富含亮氨酸重复激酶 2 (LRRK2) 是一种复杂的多域蛋白,属于 Roco 蛋白家族,这是一组独特的 G 蛋白。该基因的变体与帕金森病的风险增加有关。除了由其 GTPase 和激酶结构域以及中心二聚化结构域赋予的充分表征的酶活性外,它还包含四个预测的重复结构域,根据其结构,这些结构域通常参与蛋白质-蛋白质相互作用 (PPI)。在过去的几十年中,在确定人类蛋白质组的综合相互作用组图方面取得了巨大进展。PPI 的知识有助于为参与人类疾病的蛋白质分配功能,并有助于了解不同疾病通路之间的连通性,并且还显着促进了 LRRK2 的功能理解。除了观察到含有 PD 相关变体的蛋白质的激酶活性增加之外,各种研究还有助于将 LRRK2 确立为细胞骨架动力学和囊泡运输之间界面中的大支架蛋白。本综述首先讨论了一些特定的 LRRK2 相关 PPI,至少可以推测其功能后果,然后考虑 LRRK2 蛋白质相互作用在公共存储库中的表示,提供对该领域开放研究问题和挑战的展望。除了观察到含有 PD 相关变体的蛋白质的激酶活性增加之外,各种研究还有助于将 LRRK2 确立为细胞骨架动力学和囊泡运输之间界面中的大支架蛋白。本综述首先讨论了一些特定的 LRRK2 相关 PPI,至少可以推测其功能后果,然后考虑 LRRK2 蛋白质相互作用在公共存储库中的表示,提供对该领域开放研究问题和挑战的展望。除了观察到含有 PD 相关变体的蛋白质的激酶活性增加之外,各种研究还有助于将 LRRK2 确立为细胞骨架动力学和囊泡运输之间界面中的大支架蛋白。本综述首先讨论了一些特定的 LRRK2 相关 PPI,至少可以推测其功能后果,然后考虑 LRRK2 蛋白质相互作用在公共存储库中的表示,提供对该领域开放研究问题和挑战的展望。
更新日期:2020-05-20
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