A conceptual framework for understanding phase separation and addressing open questions and challenges.
A conceptual framework for understanding phase separation and addressing open questions and challenges.
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DOI:
10.1016/j.molcel.2022.05.018
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发表时间:
2022-06-16
期刊:
影响因子:
16
通讯作者:
Pappu, Rohit, V
中科院分区:
文献类型:
--
作者:
Mittag, Tanja;Pappu, Rohit, V
Macromolecular phase separation is being recognized for its potential importance and relevance as a driver of spatial organization within cells. Here, we describe a framework based on synergies between networking (percolation or gelation) and density (phase separation) transitions. Accordingly, the phase transitions in question are referred to as phase separation coupled to percolation (PSCP). Condensates that result from PSCP are viscoelastic network fluids. Such systems have sequence-, composition-, and topology-specific internal network structures that give rise to time-dependent interplays between viscous and elastic properties. Unlike pure phase separation, the process of PSCP gives rise to sequence-, chemistry-, and structure-specific distributions of clusters that can form at concentrations that lie well below the threshold concentration for phase separation. PSCP, influenced by specific vs. solubility-determining interactions, also provides a bridge between different observations and helps answer questions and address challenges that have arisen regarding the role of macromolecular phase separation in biology.
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10.1073/pnas.1706197114
发表时间:
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影响因子:
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作者:
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通讯作者:
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影响因子:
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通讯作者:
Pappu, Rohit, V