Single-molecule techniques to visualize and to characterize liquid-liquid phase separation and phase transition

Biomolecules forming membraneless structures via liquid-liquid phase separation (LLPS) is a common event in living cells. Some liquid-like condensates can convert into solid-like aggregations, and such a phase transition process is related to some neurodegenerative diseases. Liquid-like condensates...

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Main Authors: Ji Jinyao, Wang Wenjuan, Chen Chunlai
Format: Article
Language:English
Published: China Science Publishing & Media Ltd. 2023-03-01
Series:Acta Biochimica et Biophysica Sinica
Subjects:
Online Access:https://www.sciengine.com/doi/10.3724/abbs.2023028
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author Ji Jinyao
Wang Wenjuan
Chen Chunlai
author_facet Ji Jinyao
Wang Wenjuan
Chen Chunlai
author_sort Ji Jinyao
collection DOAJ
description Biomolecules forming membraneless structures via liquid-liquid phase separation (LLPS) is a common event in living cells. Some liquid-like condensates can convert into solid-like aggregations, and such a phase transition process is related to some neurodegenerative diseases. Liquid-like condensates and solid-like aggregations usually exhibit distinctive fluidity and are commonly distinguished via their morphology and dynamic properties identified through ensemble methods. Emerging single-molecule techniques are a group of highly sensitive techniques, which can offer further mechanistic insights into LLPS and phase transition at the molecular level. Here, we summarize the working principles of several commonly used single-molecule techniques and demonstrate their unique power in manipulating LLPS, examining mechanical properties at the nanoscale, and monitoring dynamic and thermodynamic properties at the molecular level. Thus, single-molecule techniques are unique tools to characterize LLPS and liquid-to-solid phase transition under close-to-physiological conditions.
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spelling doaj.art-76be37c0c4dd475a990b9001812be44c2023-11-06T08:35:25ZengChina Science Publishing & Media Ltd.Acta Biochimica et Biophysica Sinica1672-91452023-03-01551023103310.3724/abbs.202302820d259ccSingle-molecule techniques to visualize and to characterize liquid-liquid phase separation and phase transitionJi Jinyao0Wang Wenjuan1Chen Chunlai2["School of Life Sciences, Beijing Advanced Innovation Center for Structural Biology, Beijing Frontier Research Center of Biological Structure, Tsinghua University, Beijing 100084, China"]["School of Life Sciences, Technology Center for Protein Sciences, Tsinghua University, Beijing 100084, China"]["School of Life Sciences, Beijing Advanced Innovation Center for Structural Biology, Beijing Frontier Research Center of Biological Structure, Tsinghua University, Beijing 100084, China"]Biomolecules forming membraneless structures via liquid-liquid phase separation (LLPS) is a common event in living cells. Some liquid-like condensates can convert into solid-like aggregations, and such a phase transition process is related to some neurodegenerative diseases. Liquid-like condensates and solid-like aggregations usually exhibit distinctive fluidity and are commonly distinguished via their morphology and dynamic properties identified through ensemble methods. Emerging single-molecule techniques are a group of highly sensitive techniques, which can offer further mechanistic insights into LLPS and phase transition at the molecular level. Here, we summarize the working principles of several commonly used single-molecule techniques and demonstrate their unique power in manipulating LLPS, examining mechanical properties at the nanoscale, and monitoring dynamic and thermodynamic properties at the molecular level. Thus, single-molecule techniques are unique tools to characterize LLPS and liquid-to-solid phase transition under close-to-physiological conditions.https://www.sciengine.com/doi/10.3724/abbs.2023028LLPSphase transitionsingle-molecule techniques
spellingShingle Ji Jinyao
Wang Wenjuan
Chen Chunlai
Single-molecule techniques to visualize and to characterize liquid-liquid phase separation and phase transition
Acta Biochimica et Biophysica Sinica
LLPS
phase transition
single-molecule techniques
title Single-molecule techniques to visualize and to characterize liquid-liquid phase separation and phase transition
title_full Single-molecule techniques to visualize and to characterize liquid-liquid phase separation and phase transition
title_fullStr Single-molecule techniques to visualize and to characterize liquid-liquid phase separation and phase transition
title_full_unstemmed Single-molecule techniques to visualize and to characterize liquid-liquid phase separation and phase transition
title_short Single-molecule techniques to visualize and to characterize liquid-liquid phase separation and phase transition
title_sort single molecule techniques to visualize and to characterize liquid liquid phase separation and phase transition
topic LLPS
phase transition
single-molecule techniques
url https://www.sciengine.com/doi/10.3724/abbs.2023028
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AT wangwenjuan singlemoleculetechniquestovisualizeandtocharacterizeliquidliquidphaseseparationandphasetransition
AT chenchunlai singlemoleculetechniquestovisualizeandtocharacterizeliquidliquidphaseseparationandphasetransition