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In Vitro Methanol Production from Methyl Coenzyme M Using the Methanosarcina Barkeri MtaABC Protein Complex

机译:在甲基辅酶M使用甲基喹啉乙酰甲蛋白蛋白质复合物的体外甲醇生产

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Methanol: coenzyme M methyltransferase is an enzyme complex composed of three subunits, MtaA, MtaB, and MtaC, found in methanogenic archaea and is needed for their growth on methanol ultimately producing methane. MtaABC catalyzes the energetically favorable methyl transfer from methanol to coenzyme M to form methyl coenzyme M. Here we demonstrate that this important reaction for possible production of methanol from the anaerobic oxidation of methane can be reversed in vitro. To this effect, we have expressed and purified the Methanosarcina barkeri MtaABC enzyme, and developed an in vitro functional assay that demonstrates MtaABC can catalyze the energetically unfavorable (DG8527 kJ/mol) reverse reaction starting from methyl coenzyme M and generating methanol as a product. Demonstration of an in vitro ability of MtaABC to produce methanol may ultimately enable the anaerobic oxidation of methane to produce methanol and from methanol alternative fuel or fuel-precursor molecules. (C) 2017 American Institute of Chemical Engineers
机译:甲醇:辅酶M甲基转移酶是由三个亚基,MTAA,MTAB和MTAC组成的酶络合物,该酶复合物在甲状腺原煤中发现,并且在最终产生甲烷的甲醇上的生长需要。 MTAABC催化从甲醇中的高含量偏甲基转移到辅酶M中形成甲基辅酶M.在这里,我们证明了从甲烷的厌氧氧化可能产生甲醇的这一重要反应可以在体外反转。为此,我们表达并纯化了甲烷豆蔻静脉培养MTAABC酶,并开发了一种体外功能测定,证明MTAABC可以催化从甲基辅酶M开始的能量不利的(DG8527 kJ / mol)反应并产生甲醇作为产物。 MTAABC生产甲醇的体外能力的证明可能最终使甲烷的厌氧氧化能够产生甲醇和甲醇替代燃料或燃料前体分子。 (c)2017美国化学工程师研究所

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