Intrinsically Disordered Regions Can Contribute Promiscuous Interactions to RNP Granule Assembly.
Intrinsically Disordered Regions Can Contribute Promiscuous Interactions to RNP Granule Assembly.
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DOI:
10.1016/j.celrep.2018.01.036
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发表时间:
2018-02-06
期刊:
影响因子:
8.8
通讯作者:
Parker R
中科院分区:
文献类型:
--
作者:
Protter DSW;Rao BS;Van Treeck B;Lin Y;Mizoue L;Rosen MK;Parker R
Eukaryotic cells contain large RNA-protein assemblies referred to as RNP granules, whose assembly is promoted by both traditional protein interactions and intrinsically disordered protein domains. Using RNP granules as an example, we provide evidence for an assembly mechanism of large cellular structures wherein specific protein-protein or protein-RNA interactions act together with promiscuous interactions of intrinsically disordered regions (IDRs). This synergistic assembly mechanism illuminates RNP granule assembly and explains why many components of RNP granules, and other large dynamic assemblies, contain IDRs linked to specific protein-protein or protein-RNA interaction modules. We suggest assemblies based on combinations of specific interactions and promiscuous IDRs are common features of eukaryotic cells. Many RNA-binding proteins contain disordered regions. Protter et al. find that these regions interact nonspecifically with other proteins, which can disrupt phase separation in vitro. They also find that promiscuous interactions synergize with specific interactions to promote phase separation and formation of higher-order structures, like RNP granules.
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