Current developments and challenges in the search for a naturally selected Diels-Alderase.

Current developments and challenges in the search for a naturally selected Diels-Alderase.
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DOI:
10.1016/j.cbpa.2011.12.017
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发表时间:
2012-04
影响因子:
7.8
通讯作者:
Liu, Hung-wen
Liu, Hung-wen
中科院分区:
生物学2区
文献类型:
--
作者:
Kim, Hak Joong;Ruszczycky, Mark W.;Liu, Hung-wen

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已知催化周环反应的酶的例子只有非常少的报道,目前还没有酶被明确地证明催化Diels-Alder反应。然而,对次级代谢的研究已经发现了许多天然产物,其表现出[4+2]环加成的结构特征,促使人们努力表征负责的酶促过程。这些努力已经导致越来越多的酶被认为是催化周环[4+2]环加成反应;然而,在每种情况下,这些酶的底物和催化性质的复杂性在证实这些假设方面提出了重大挑战。在这里,我们认为这些努力的动机和目前正在调查的酶学系统的原则。
Only a very few examples of enzymes known to catalyze pericyclic reactions have been reported, and presently no enzyme has been demonstrated unequivocally to catalyze a Diels-Alder reaction. Nevertheless, research into secondary metabolism has led to the discovery of numerous natural products exhibiting the structural hallmarks of [4+2] cycloadditions, prompting efforts to characterize the responsible enzymatic processes. These efforts have resulted in a growing collection of enzymes believed to catalyze pericyclic [4+2] cycloaddition reactions; however, in each case the complexity of the substrates and catalytic properties of these enzymes poses significant challenges in substantiating these hypotheses. Herein we consider the principles motivating these efforts and the enzymological systems currently under investigation.
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