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Persistent URL http://purl.org/net/epubs/work/41454
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Record Id 41454
Title Model for Acetylene Reduction by Nitrogenase Derived from Density Functional Theory
Abstract The catalytic cycle of acetylene reduction at the FeMo cofactor of nitrogenase has been investigated on the basis of density functional theory. C2H2 binds to the same site as N2, but it binds to a less reduced state of the cofactor. In a manner similar to that of N2 binding, one of the sulfur bridges opens during acetylene binding. The model explains the strong noncompetitive inhibition of N2 reduction by C2H2 and the weak competitive inhibition of C2H2 reduction by N2. Our proposed mechanism is consistent with experimentally observed stereoselectivity and the ability of C2H2 to suppress H2 production by nitrogenase.
Organisation CCLRC
Keywords Physics , Chemistry , Biology
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Language English (EN)
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Journal Article Inorg Chem 44, no. 13 (2005): 4568-4575. doi:10.1021/ic0500311 2005