Quantum catalysis? A comment on tunnelling contributions for catalysed and uncatalysed reactions

Quantum catalysis? A comment on tunnelling contributions for catalysed and uncatalysed reactions
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量子催化?

DOI:
10.1002/poc.1658
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发表时间:
2010
影响因子:
1.8
通讯作者:
Williams I
Williams I
中科院分区:
化学4区
文献类型:
--
作者:
Williams I

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对核量子效应(NQE)对化学反应性的贡献的认识早于过渡态理论(TST)。对乳酸脱氢酶(LDH)和甲酸脱氢酶(FDH)催化的反应以及水中相同反应的速率常数的量子校正通过Bell的一维近似方法进行估计,并分别给出1.6和0.95的催化隧道贡献。回顾了已发表的NQE结果,包括通过量子经典路径方法对LDH、碳酸酐酶、乙醛酸酶I和脂氧合酶以及水中相应反应估计的隧道能和零点能:各自对催化的贡献分别为0.66、5、1和1。在缺乏更好的证据表明酶促速率增强是由于酶催化反应的量子校正显著大于适当的非催化参比反应的情况下,建议谨慎和限制使用术语“量子催化”。版权所有© 2010约翰威利父子有限公司.
Appreciation for the contribution of nuclear quantum effects (NQEs) to chemical reactivity predates transition‐state theory (TST). Quantum corrections to rate constants for the reactions catalysed by lactate dehydrogenase (LDH) and formate dehydrogenase (FDH) and the same reactions in water are estimated by Bell's one‐dimensional approximate method and give tunnelling contributions to catalysis of 1.6 and 0.95, respectively. Published results for NQEs, including both tunnelling and zero‐point energies, estimated by the quantum classical path method for LDH, carbonic anhydrase, glyoxylase I and lipoxygenase, together with the corresponding reactions in water, are reviewed: the respective contributions to catalysis are 0.66, 5, 1 and 1. In the absence of better evidence that an enzymic rate enhancement is due to a significantly larger quantum correction for the enzyme‐catalysed reaction than for an appropriate uncatalysed reference reaction, it is suggested that the term ‘quantum catalysis’ should be used with caution and restraint. Copyright © 2010 John Wiley & Sons, Ltd.
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