Crystal structures of cytochrome P450nor and its mutants (Ser286-->Val, Thr) in the ferric resting state at cryogenic temperature: a comparative analysis with monooxygenase cytochrome P450s.

Abstract excerpt

Cytochrome P450nor (P450nor) is a heme enzyme isolated from the denitrifying fungus Fusarium oxysporum and catalyzes the NO reduction to N2O. Crystal structures of the wild type and two Ser286 mutants (Ser286-->Val, Ser286-->Thr) of P450nor have been determined for the ferric resting forms at a 1.7 A resolution at cryogenic temperature (100 K). We carried out three comparative analyses: (1) between the structures...

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