Article
Flavocytochrome P450 BM3 mutant A264E undergoes substrate-dependent formation of a novel heme iron ligand set.
The Journal of biological chemistry - 28 May 2004
Girvan Hazel M, Marshall Ker R, Lawson Rachel J, Leys David, Joyce M Gordon, Clarkson John, Smith W Ewen, Cheesman Myles R, Munro Andrew W
Abstract excerpt
A conserved glutamate covalently attaches the heme to the protein backbone of eukaryotic CYP4 P450 enzymes. In the related Bacillus megaterium P450 BM3, the corresponding residue is Ala264. The A264E mutant was generated and characterized by kinetic and spectroscopic methods. A264E has an altered absorption spectrum compared with the wild-type enzyme (Soret maximum at approximately 420.5 nm). Fatty acid...
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