Influence of osmolytes on inactivation and aggregation of muscle glycogen phosphorylase b by guanidine hydrochloride.: Stimulation of protein aggregation under crowding conditions

被引:24
作者
Eronina, TB [1 ]
Chebotareva, NA [1 ]
Kurganov, BI [1 ]
机构
[1] Russian Acad Sci, Bach Inst Biochem, Moscow 119071, Russia
基金
俄罗斯基础研究基金会;
关键词
muscle glycogen phosphorylase b; guanidine hydrochloride; inactivation; aggregation; osmolyte;
D O I
10.1007/s10541-005-0219-8
中图分类号
Q5 [生物化学]; Q7 [分子生物学];
学科分类号
071010 ; 081704 ;
摘要
The effects of the osmolytes trimethylamine-N-oxide (TMAO), betaine, proline, and glycine on the kinetics of inactivation and aggregation of rabbit skeletal muscle glycogen phosphorylase b by guanidine hydrochloride (GuHCl) have been studied. It is shown that the osmolytes TMAO and betaine exhibit the highest protective efficacy against phosphorylase b inactivation. A test system for studying the effects of macromolecular crowding induced by osmolytes on aggregation of proteins is proposed. TMAO and glycine increase the rate of phosphorylase b aggregation induced by GuHCl.
引用
收藏
页码:1020 / 1026
页数:7
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