Flexibility, diversity, and cooperativity: pillars of enzyme catalysis.

Flexibility, diversity, and cooperativity: pillars of enzyme catalysis.
复制标题

灵活性,多样性和合作性:酶催化的支柱。

DOI:
10.1021/bi201486f
复制
发表时间:
2011-12-06
期刊:
影响因子:
2.9
通讯作者:
Hammes-Schiffer, Sharon
Hammes-Schiffer, Sharon
中科院分区:
生物学3区
文献类型:
--
作者:
Hammes, Gordon G.;Benkovic, Stephen J.;Hammes-Schiffer, Sharon

文献摘要

参考文献

被引文献

相似文献

本文简要综述了目前对酶催化分子基础的认识。介绍了一个历史发展,从稳态动力学开始,通过现代快速反应方法,核磁共振和单分子荧光技术。综述了核糖核酸酶、天冬氨酸转氨酶,特别是二氢叶酸还原酶(DHFR)的实验结果。多种中间体、多种构象和协同构象变化是几乎所有酶机制的重要组成部分。在DHFR的情况下,理论研究已经提供了关于酶-底物复合物内原子运动的详细信息,因为反应沿着氢化物转移的集体反应坐标进行。提出了酶催化的一般机理,包括多种中间体和复杂的多维标准自由能面。蛋白质的灵活性,多样的蛋白质构象和协同构象变化是该模型的重要特征。
This brief review discusses our current understanding of the molecular basis of enzyme catalysis. A historical development is presented, beginning with steady state kinetics and progressing through modern fast reaction methods, NMR, and single molecule fluorescence techniques. Experimental results are summarized for ribonuclease, aspartate aminotransferase, and especially dihydrofolate reductase (DHFR). Multiple intermediates, multiple conformations, and cooperative conformational changes are shown to be an essential part of virtually all enzyme mechanisms. In the case of DHFR, theoretical investigations have provided detailed information about the movement of atoms within the enzyme-substrate complex as the reaction proceeds along the collective reaction coordinate for hydride transfer. A general mechanism is presented for enzyme catalysis that includes multiple intermediates and a complex, multidimensional standard free energy surface. Protein flexibility, diverse protein conformations, and cooperative conformational changes are important features of this model.
DOI: 10.1126/science.1198542
发表时间: 2011-04-08
期刊: Science (New York, N.Y.)
影响因子: --
作者:
Bhabha G;Lee J;Ekiert DC;Gam J;Wilson IA;Dyson HJ;Benkovic SJ;Wright PE
通讯作者: Wright PE
DOI: 10.1126/science.1130258
发表时间: 2006-09-15
期刊: SCIENCE
影响因子: 56.9
作者:
Boehr, David D.;McElheny, Dan;Wright, Peter E.
通讯作者: Wright, Peter E.
DOI: 10.1021/bi00858a031
发表时间: 1967-01-01
期刊: BIOCHEMISTRY
影响因子: 2.9
作者:
FASELLA, P;HAMMES, GG
通讯作者: HAMMES, GG
DOI: 10.1073/pnas.1111252108
发表时间: 2011-08-23
影响因子: 11.1
作者:
Adamczyk, Andrew J.;Cao, Jie;Warshel, Arieh
通讯作者: Warshel, Arieh
DOI: 10.1021/bi0260839
发表时间: 2002-07-02
期刊: BIOCHEMISTRY
影响因子: 2.9
作者:
Hammes, GG
通讯作者: Hammes, GG