Interaction of oxidized chaperonin GroEL with an unfolded protein at low temperatures.
Interaction of oxidized chaperonin GroEL with an unfolded protein at low temperatures.
复制标题
氧化伴侣蛋白 GroEL 与未折叠蛋白质在低温下的相互作用。
DOI:
10.1042/bsr20110104
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发表时间:
2012
影响因子:
4
通讯作者:
Mendoza,JoseA
中科院分区:
文献类型:
--
作者:
Melkani,GirishC;Sielaff,Robin;Zardeneta,Gustavo;Mendoza,JoseA
The chaperonin GroEL binds to non-native substrate proteins via hydrophobic interactions, preventing their aggregation, which is minimized at low temperatures. In the present study, we investigated the refolding of urea-denatured rhodanese at low temperatures, in the presence of ox-GroEL (oxidized GroEL), which contains increased exposed hydrophobic surfaces and retains its ability to hydrolyse ATP. We found that ox-GroEL could efficiently bind the urea-unfolded rhodanese at 4°C, without requiring excess amount of chaperonin relative to normal GroEL (i.e. non-oxidized). The release/reactivation of rhodanese from GroEL was minimal at 4°C, but was found to be optimal between 22 and 37°C. It was found that the loss of the ATPase activity of ox-GroEL at 4°C prevented the release of rhodanese from the GroEL–rhodanese complex. Thus ox-GroEL has the potential to efficiently trap recombinant or non-native proteins at 4°C and release them at higher temperatures under appropriate conditions.
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DOI:
10.1016/s0021-9258(18)98800-9
发表时间:
1991-07
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
J. A. Mendoza;E. Rogers;G. Lorimer;Paul M. Horowitz
通讯作者:
J. A. Mendoza;E. Rogers;G. Lorimer;Paul M. Horowitz
DOI:
--
发表时间:
1991
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
Mendoza,JA;Rogers,E;Lorimer,GH;Horowitz,PM
通讯作者:
Horowitz,PM
影响因子:
3.1
作者:
G. Melkani;Justin Kestetter;R. Sielaff;G. Zardeneta;J. A. Mendoza
通讯作者:
J. A. Mendoza
DOI:
--
发表时间:
1992
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
Mendoza,JA;Butler,MC;Horowitz,PM
通讯作者:
Horowitz,PM
DOI:
10.1006/cryo.2000.2287
发表时间:
2000
期刊:
Cryobiology.
影响因子:
--
作者:
Mendoza,JA;Dulin,P;Warren,T
通讯作者:
Warren,T