Light-driven Oxidative Demethylation Reaction Catalyzed by a Rieske-type Non-heme Iron Enzyme Stc2.

Light-driven Oxidative Demethylation Reaction Catalyzed by a Rieske-type Non-heme Iron Enzyme Stc2.
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Rieske型非血红素铁酶Stc2催化的光驱动氧化去甲基化反应。

DOI:
10.1021/acscatal.2c04232
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发表时间:
2022
期刊:
影响因子:
12.9
通讯作者:
Liu,Pinghua
Liu,Pinghua
中科院分区:
化学1区
文献类型:
--
作者:
Hu,Wei-Yao;Li,Kelin;Weitz,Andrew;Wen,Aiwen;Kim,Hyomin;Murray,JessicaC;Cheng,Ronghai;Chen,Baixiong;Naowarojna,Nathchar;Grinstaff,MarkW;Elliott,SeanJ;Chen,Jie-Sheng;Liu,Pinghua

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Rieske型非血红素铁加氧酶/氧化酶催化广泛的转化。它们在生物修复或生物催化中的应用面临两个关键障碍:需要昂贵的NAD(P)H作为还原剂和合适的还原酶来介导从NAD(P)H到加氧酶的电子转移。为了绕过还原酶和NAD(P)H的需要,使用Rieske型加氧酶(Stc 2)催化的氧化脱甲基作为模型系统,我们报告了Stc 2使用曙红Y/亚硫酸盐作为光敏剂/牺牲试剂对的氧化。在分离光还原半反应和氧化半反应的流动化学设置中,Stc 2光生物催化优于Stc 2-NAD(P)H-还原酶(GbcB)系统。此外,在其他一些选择的Rieske酶(NdmA,CntA和GbcA)和黄素依赖性酶(碘酪氨酸脱碘酶,IYD)中,曙红Y/亚硫酸钠光还原对也可以作为NAD(P)H-还原酶的替代物来支持催化,这意味着这种光还原系统对其他氧化还原酶的潜在适用性。
Rieske-type non-heme iron oxygenases/oxidases catalyze a wide range of transformations. Their applications in bioremediation or biocatalysis face two key barriers: the need of expensive NAD(P)H as a reductant and a proper reductase to mediate the electron transfer from NAD(P)H to the oxygenases. To bypass the need of both the reductase and NAD(P)H, using Rieske-type oxygenase (Stc2)-catalyzed oxidative demethylation as the model system, we report Stc2 photocatalysis using eosin Y/sulfite as the photosensitizer/sacrificial reagent pair. In a flow-chemistry setting to separate the photo-reduction half-reaction and oxidation half-reaction, Stc2 photo-biocatalysis outperforms the Stc2-NAD(P)H-reductase (GbcB) system. In addition, in a few other selected Rieske enzymes (NdmA, CntA, and GbcA) and a flavin-dependent enzyme (iodotyrosine deiodinase, IYD), the eosin Y/sodium sulfite photo-reduction pair could also serve as the NAD(P)H-reductase surrogate to support catalysis, which implies the potential applicability of this photo-reduction system to other redox enzymes.
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