The role of the glycine triad in human glutathione synthetase.
The role of the glycine triad in human glutathione synthetase.
复制标题
DOI:
10.1016/j.bbrc.2010.08.081
复制
发表时间:
2010-10-01
影响因子:
3.1
通讯作者:
Anderson ME
中科院分区:
文献类型:
--
作者:
Dinescu A;Brown TR;Barelier S;Cundari TR;Anderson ME
Experimental kinetics and computational modeling of human glutathione synthetase (hGS) support the significant role of the G-loop glycine triad (G369, G370, G371) for activity of this ATP-grasp enzyme. Enzyme kinetic experiments indicate that G369V and G370V mutant hGS have little activity (<0.7 and 0.3%, respectively, versus wild-type hGS). However, G371V retains ∼13% of the activity of wild-type hGS. With respect to G-loop:A-loop interaction in hGS, mutations at Gly369 and Gly370 decrease ligand binding and prevent active site closure and protection. This research indicates that Gly369 and Gly370 have essential roles in hGS, while Gly371 has a lesser involvement. Implications for glycine-rich ensembles in other phosphate-binding enzymes are discussed.
登录
查看更多内容
影响因子:
2.9
作者:
Hara, T;Kato, H;Oda, JI
通讯作者:
Oda, JI
影响因子:
2.9
作者:
Grant, BD;Hemmer, W;Taylor, SS
通讯作者:
Taylor, SS
影响因子:
4.8
作者:
Dinescu, A;Cundari, TR;Anderson, ME
通讯作者:
Anderson, ME
影响因子:
2.1
作者:
GASTEIGER, J;MARSILI, M
通讯作者:
MARSILI, M
影响因子:
3.3
作者:
Bright, JN;Sansom, MSP
通讯作者:
Sansom, MSP