Cobalamin-dependent and cobamide-dependent methyltransferases.

Cobalamin-dependent and cobamide-dependent methyltransferases.
复制标题

DOI:
10.1016/j.sbi.2008.11.005
复制
发表时间:
2008-12
影响因子:
6.8
通讯作者:
Datta, Supratim
Datta, Supratim
中科院分区:
生物学2区
文献类型:
--
作者:
Matthews, Rowena G.;Koutmos, Markos;Datta, Supratim

文献摘要

参考文献

被引文献

相似文献

采用钴胺素辅因子或其类似物钴酰胺作为甲基转移催化中间体的甲基转移酶在厌氧单细胞生物的能量产生中发挥着至关重要的作用。在更广泛的生物体中,它们参与同型半胱氨酸向蛋氨酸的转化。尽管催化的各个甲基转移反应是简单的 SN2 置换,但钴胺素或钴酰胺辅因子的钴配位所需的变化以及还原的 Co+1 中间体的不稳定性引入了催化循环期间复杂构象变化的必要性。最近对其中几种甲基转移酶的光谱和结构研究有助于揭示促进和控制这些构象变化的策略。
Methyltransferases that employ cobalamin cofactors, or their analogues the cobamides, as intermediates in catalysis of methyl transfer play vital roles in energy generation in anaerobic unicellular organisms. In a broader range of organisms they are involved in the conversion of homocysteine to methionine. Although the individual methyl transfer reactions catalyzed are simple SN2 displacements, the required change in coordination at the cobalt of the cobalamin or cobamide cofactors and the lability of the reduced Co+1 intermediates introduces the necessity for complex conformational changes during the catalytic cycle. Recent spectroscopic and structural studies on several of these methyltransferases have helped to reveal the strategies by which these conformational changes are facilitated and controlled.
DOI: 10.1126/science.7992050
发表时间: 1994-12-09
期刊: SCIENCE
影响因子: 56.9
作者:
DRENNAN, CL;HUANG, S;LUDWIG, ML
通讯作者: LUDWIG, ML
DOI: 10.1046/j.1432-1327.1998.2570515.x
发表时间: 1998-10-01
期刊: EUROPEAN JOURNAL OF BIOCHEMISTRY
影响因子: --
作者:
Kaufmann, F;Wohlfarth, G;Diekert, G
通讯作者: Diekert, G
DOI: 10.1073/pnas.0603650103
发表时间: 2006-12-12
影响因子: 11.1
作者:
Hagemeier, Christoph H.;Krueer, Markus;Ermler, Ulrich
通讯作者: Ermler, Ulrich
DOI: 10.1021/bi971988l
发表时间: 1997-12-16
期刊: BIOCHEMISTRY
影响因子: 2.9
作者:
Goulding, CW;Matthews, RG
通讯作者: Matthews, RG
DOI: 10.1038/nature04056
发表时间: 2005-11-03
期刊: NATURE
影响因子: 64.8
作者:
Croft, MT;Lawrence, AD;Smith, AG
通讯作者: Smith, AG