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A Functional Nitric Oxide Reductase Model

机译:功能性一氧化氮还原酶模型

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摘要

A functional hemeonheme nitric oxide reductase (NOR) model is presented. The fully reduced diiron compound reacts with two equivalents of NO leading to the formation of one equivalent of N_2O and the bis-ferric product. NO binds to both heme Fe and nonheme Fe complexes forming individual ferrous nitrosyl species. The mixed-valence species with an oxidized heme and a reduced nonheme Fe_B does not show NO reduction activity. These results are consistent with a so-called "trans" mechanism for the reduction of NO by bacterial NOR.
机译:提出了功能性血红素/非血红素一氧化氮还原酶(NOR)模型。完全还原的二铁化合物与两当量的NO反应,导致形成一当量的N_2O和双铁产物。 NO与血红素铁和非血红素铁配合物结合,形成单个亚硝酰基亚铁。具有氧化血红素和还原的非血红素Fe_B的混合价物质不显示NO还原活性。这些结果与细菌NOR减少NO的所谓“反式”机理一致。

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