... substrate-accessing channel, and theirguanidinium and hydroxyl groups, respectively, play crucialroles in the binding of the substrate by interacting with thecarboxyl group of the substrate fatty acids ... essential for fixing the carboxylate of fattyacids is maintained by replacing Arg with Lys. However,hydrophobicity at the entrance to P450foxy should besignificantly increased as the result of the substitutions ... University of Tokyo, JapanCytochrome P450foxy (P450foxy, CYP505) is a fused pro-tein of cytochrome P450 (P450) and its reductase isolatedfrom the fungus Fusarium oxysporum, which catalyzes thesubterminal...