A Flavin-Dependent Decarboxylase-Dehydrogenase-Monooxygenase Assembles the Warhead of α,β-Epoxyketone Proteasome Inhibitors.
A Flavin-Dependent Decarboxylase-Dehydrogenase-Monooxygenase Assembles the Warhead of α,β-Epoxyketone Proteasome Inhibitors.
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黄素依赖性脱羧酶-脱氢酶-单加氧酶组装 α,β-环氧酮蛋白酶体抑制剂的弹头。
DOI:
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发表时间:
2016
影响因子:
15
通讯作者:
G. Challis
中科院分区:
文献类型:
--
作者:
Daniel Zabala;Joshua W. Cartwright;Douglas M. Roberts;Brian J. C. Law;Lijiang Song;Markiyan Samborskyy;P. Leadlay;Jason Micklefield;G. Challis
The α,β-epoxyketone proteasome inhibitor TMC-86A was discovered as a previously unreported metabolite of Streptomyces chromofuscus ATCC49982, and the gene cluster responsible for its biosynthesis was identified via genome sequencing. Incorporation experiments with [(13)C-methyl]l-methionine implicated an α-dimethyl-β-keto acid intermediate in the biosynthesis of TMC-86A. Incubation of the chemically synthesized α-dimethyl-β-keto acid with a purified recombinant flavin-dependent enzyme that is conserved in all known pathways for epoxyketone biosynthesis resulted in formation of the corresponding α-methyl-α,β-epoxyketone. This transformation appears to proceed via an unprecedented decarboxylation-dehydrogenation-monooxygenation cascade. The biosynthesis of the TMC-86A warhead is completed by cytochrome P450-mediated hydroxylation of the α-methyl-α,β-epoxyketone.
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影响因子:
15
作者:
Gu, Liangcai;Wang, Bo;Kulkarni, Amol;Gehret, Jennifer J.;Lloyd, Kayla R.;Gerwick, Lena;Gerwick, William H.;Wipf, Peter;Hakansson, Kristina;Smith, Janet. L.;Sherman, David H.
通讯作者:
Sherman, David H.
影响因子:
11.9
作者:
Kim KB;Crews CM
通讯作者:
Crews CM
影响因子:
4
作者:
Schorn, Michelle;Zettler, Judith;Noel, Joseph P.;Dorrestein, Pieter C.;Moore, Bradley S.;Kaysser, Leonard
通讯作者:
Kaysser, Leonard
DOI:
10.1002/anie.201208344
发表时间:
2013-07-08
期刊:
Angewandte Chemie (International ed. in English)
影响因子:
--
作者:
Walsh CT;O'Brien RV;Khosla C
通讯作者:
Khosla C