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2017 ; 9
(5
): 563-572
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Kinetic stability of membrane proteins
#MMPMID28921106
González Flecha FL
Biophys Rev
2017[Oct]; 9
(5
): 563-572
PMID28921106
show ga
Although membrane proteins constitute an important class of biomolecules involved
in key cellular processes, study of the thermodynamic and kinetic stability of
their structures is far behind that of soluble proteins. It is known that many
membrane proteins become unstable when removed by detergent extraction from the
lipid environment. In addition, most of them undergo irreversible denaturation,
even under mild experimental conditions. This process was found to be associated
with partial unfolding of the polypeptide chain exposing hydrophobic regions to
water, and it was proposed that the formation of kinetically trapped
conformations could be involved. In this review, we will describe some of the
efforts toward understanding the irreversible inactivation of membrane proteins.
Furthermore, its modulation by phospholipids, ligands, and temperature will be
herein discussed.