Single-molecule and ensemble methods to probe RNP nucleation and condensate properties.
Single-molecule and ensemble methods to probe RNP nucleation and condensate properties.
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DOI:
10.1016/j.ymeth.2021.02.012
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发表时间:
2022-01
期刊:
影响因子:
--
通讯作者:
Myong S
中科院分区:
文献类型:
--
作者:
Rhine K;Skanchy S;Myong S
Biomolecular condensates often consist of intrinsically disordered protein and RNA molecules, which together promote the formation of membraneless organelles in cells. The nucleation, condensation, and maturation of condensates is a critical yet poorly understood process. Here, we present single-molecule and accompanying ensemble methods to quantify these processes more comprehensively. In particular, we focus on how to properly design and execute a single-molecule nucleation assay, in which we detect signals arising from individual units of fluorescently labeled RNA-binding proteins associating with an RNA substrate. The analysis of this data allows one to determine the kinetics involved with each step of nucleation. Complemented with meso-scale techniques that measure the biophysical properties of ribonucleoprotein condensates, the methods described herein are powerful tools that can be adopted for studying any protein-RNA interactions that undergo phase separation.
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