The Small Heat Shock Protein, HSPB1, Interacts with and Modulates the Physical Structure of Membranes.
Int J Mol Sci
; 23(13)2022 Jun 30.
Article
in En
| MEDLINE
| ID: mdl-35806322
ABSTRACT
Small heat shock proteins (sHSPs) have been demonstrated to interact with lipids and modulate the physical state of membranes across species. Through these interactions, sHSPs contribute to the maintenance of membrane integrity. HSPB1 is a major sHSP in mammals, but its lipid interaction profile has so far been unexplored. In this study, we characterized the interaction between HSPB1 and phospholipids. HSPB1 not only associated with membranes via membrane-forming lipids, but also showed a strong affinity towards highly fluid membranes. It participated in the modulation of the physical properties of the interacting membranes by altering rotational and lateral lipid mobility. In addition, the in vivo expression of HSPB1 greatly affected the phase behavior of the plasma membrane under membrane fluidizing stress conditions. In light of our current findings, we propose a new function for HSPB1 as a membrane chaperone.
Key words
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Heat-Shock Proteins, Small
Limits:
Animals
Language:
En
Journal:
Int J Mol Sci
Year:
2022
Document type:
Article
Affiliation country:
Hungria