Computer simulations of quantum tunnelling in enzyme-catalysed hydrogen transfer reactions
Computer simulations of quantum tunnelling in enzyme-catalysed hydrogen transfer reactions
复制标题
酶催化氢转移反应中量子隧道效应的计算机模拟
DOI:
--
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发表时间:
2010
期刊:
影响因子:
--
通讯作者:
A. Mulholland
中科院分区:
文献类型:
--
作者:
K. Ranaghan;A. Mulholland
Transfer of hydrogen as a proton, hydride or hydrogen atom is an important step in many enzymic reactions. Experiments show kinetic isotope effects (KIEs) for some enzyme-catalysed hydrogen transfer reactions that deviate significantly from the limits imposed by considering the differences in mass of the isotopes alone (i.e. the semiclassical limit). These KIEs can be explained if the transfer of the hydrogen species occurs via a quantum mechanical tunnelling mechanism. The unusual temperature dependence of some KIEs has led to suggestions that enzymes have evolved to promote tunnelling through dynamics — a highly controversial hypothesis. Molecular simulations have a vital role in resolving these questions, providing a level of detail of analysis not possible through experiments alone. Here, we review computational molecular modelling studies of quantum tunnelling in enzymes, in particular focusing on the enzymes soybean lipoxygenase-1 (SLO-1), dihydrofolate reductase (DHFR), methylamine dehydrogenase (MADH) and aromatic amine dehydrogenase (AADH) to illustrate the current controversy regarding the importance of quantum effects in enzyme catalysis.
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DOI:
10.1093/protein/14.9.675
发表时间:
2001
期刊:
Protein engineering
影响因子:
--
作者:
Sun,D;Jones,LH;Mathews,FS;Davidson,VL
通讯作者:
Davidson,VL
影响因子:
15
作者:
Billeter, SR;Webb, SP;Hammes-Schiffer, S
通讯作者:
Hammes-Schiffer, S
影响因子:
2.9
作者:
Hammes-Schiffer, S
通讯作者:
Hammes-Schiffer, S
DOI:
10.1021/jp051184c
发表时间:
2005-05
期刊:
The journal of physical chemistry. B
影响因子:
--
作者:
J. Pu;Shuhua Ma;Jiali Gao;D. Truhlar
通讯作者:
J. Pu;Shuhua Ma;Jiali Gao;D. Truhlar
影响因子:
16.6
作者:
Hay, Sam;Pudney, Christopher R.;Scrutton, Nigel S.
通讯作者:
Scrutton, Nigel S.