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Is the lipochaperone activity of sHSP a key to the stress response encoded in its primary sequence?

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Cell Stress and Chaperones Aims and scope

Abstract

Several strategies have been put in place by organisms to adapt to their environment. One of these strategies is the production of stress proteins such as sHSPs, which have been widely described over the last 30 years for their role as molecular chaperones. Some sHSPs have, in addition, the particularity to exert a lipochaperone role by interacting with membrane lipids to maintain an optimal membrane fluidity. However, the mechanisms involved in this sHSP-lipid interaction remain poorly understood and described rather sporadically in the literature. This review gathers the information concerning the structure and function of these proteins available in the literature in order to highlight the mechanism involved in this interaction. In addition, analysis of primary sequence data of sHSPs available in database shows that sHSPs can interact with lipids via certain amino acid residues present on some β sheets of these proteins. These residues could have a key role in the structure and/or oligomerization dynamics of sHPSs, which is certainly essential for interaction with membrane lipids and consequently for maintaining optimal cell membrane fluidity.

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Acknowledgements

We would like to thank Accent Europe company for their reading of the English text.

Funding

This research was funded by Conseil Régional de Bourgogne, the Université de Bourgogne grant number 2021Y-09559, and the ministère de l’Enseignement supérieur de la Recherche, grant number MESR 2020–04.

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Conceptualization, TB and SW; methodology, TB and SW; formal analysis, TB and SW; investigation, TB and SW; resources, TB and SW; writing—original draft preparation, TB; writing—review and editing, TB and SW; visualization, TB and SW; supervision, SW; project administration, SW; funding acquisition, SW. All authors have read and agreed to the published version of the manuscript.

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Correspondence to Stéphanie Weidmann.

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The authors declare no competing interests.

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Bellanger, T., Weidmann, S. Is the lipochaperone activity of sHSP a key to the stress response encoded in its primary sequence?. Cell Stress and Chaperones 28, 21–33 (2023). https://doi.org/10.1007/s12192-022-01308-7

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  • DOI: https://doi.org/10.1007/s12192-022-01308-7

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