Trifluoroethanol and the behavior of a tardigrade desiccation-tolerance protein.

aggregation desiccation tolerance disorder infrared spectroscopy phase separation tardigrades trifluoroethanol

Journal

Protein science : a publication of the Protein Society
ISSN: 1469-896X
Titre abrégé: Protein Sci
Pays: United States
ID NLM: 9211750

Informations de publication

Date de publication:
08 2023
Historique:
revised: 26 06 2023
received: 11 05 2023
accepted: 27 06 2023
pmc-release: 01 08 2024
medline: 31 7 2023
pubmed: 4 7 2023
entrez: 4 7 2023
Statut: ppublish

Résumé

The cosolvent 2,2,2-trifluoroethanol (TFE) is often used to mimic protein desiccation. We assessed the effects of TFE on cytosolic abundant heat soluble protein D (CAHS D) from tardigrades. CAHS D is a member of a unique protein class that is necessary and sufficient for tardigrades to survive desiccation. We find that the response of CAHS D to TFE depends on the concentration of both species. Dilute CAHS D remains soluble and, like most proteins exposed to TFE, gains α-helix. More concentrated solutions of CAHS D in TFE accumulate β-sheet, driving both gel formation and aggregation. At even higher TFE and CAHS D concentrations, samples phase separate without aggregation or increases in helix. Our observations show the importance of considering protein concentration when using TFE.

Identifiants

pubmed: 37401908
doi: 10.1002/pro.4716
pmc: PMC10357939
doi:

Substances chimiques

Trifluoroethanol 75-89-8
Proteins 0

Types de publication

Journal Article Research Support, N.I.H., Extramural Research Support, U.S. Gov't, Non-P.H.S. Research Support, Non-U.S. Gov't

Langues

eng

Sous-ensembles de citation

IM

Pagination

e4716

Subventions

Organisme : NCI NIH HHS
ID : P30 CA016086
Pays : United States
Organisme : NIGMS NIH HHS
ID : R01 GM127291
Pays : United States
Organisme : NIGMS NIH HHS
ID : R01 GM127791
Pays : United States

Informations de copyright

© 2023 The Protein Society.

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Auteurs

Shikun Wang (S)

Department of Chemistry, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA.

Jonathan Eicher (J)

Department of Chemistry, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA.

Gary J Pielak (GJ)

Department of Chemistry, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA.
Department of Biochemistry & Biophysics, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA.
Lineberger Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA.
Integrative Program for Biological and Genome Sciences, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA.

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