. "This P450 monooxygenase enzyme is involved in the formation of angular furanocoumarins." . "Attacks its substrate by syn-elimination of hydrogen from C-3'." . . . "Angelicin synthase" . "CYP71AJ4" . "(+)-columbianetin + NADPH + O(2) = angelicin + NADP(+) + acetone + 2 H(2)O." . "Heme-thiolate" .