Osmolyte mixtures have different effects than individual osmolytes on protein folding and functional activity.

Abstract:

:Osmolytes are small organic molecules accumulated by organisms under stress conditions to protect macromolecular structure and function. In the present study, we have investigated the effect of several binary osmolyte mixtures on the protein folding/stability and function of RNase-A. For this, we have measured ΔGD(o) (Gibbs free energy change at 25°C) and specific activity of RNase-A mediated hydrolysis of cytidine 2'-3' cyclic monophosphate in the presence and absence of individual and osmolyte mixtures. It was found that the osmolyte mixtures have different effect on protein stability and function than that of individual osmolytes. Refolding studies of RNase-A in the presence of osmolyte mixtures and individual osmolytes also revealed that osmolyte mixtures have a poor refolding efficiency relative to the individual osmolytes.

journal_name

Arch Biochem Biophys

authors

Warepam M,Singh LR

doi

10.1016/j.abb.2015.03.017

subject

Has Abstract

pub_date

2015-05-01 00:00:00

pages

77-83

eissn

0003-9861

issn

1096-0384

pii

S0003-9861(15)00153-8

journal_volume

573

pub_type

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