ID 1.14.14.150 DE costunolide synthase. AN CYP71BL2. CA germacra-1(10),4,11(13)-trien-12-oate + O2 + reduced [NADPH--hemoprotein CA reductase] = (+)-costunolide + 2 H2O + oxidized [NADPH--hemoprotein CA reductase]. CC -!- A cytochrome P450 (heme-thiolate) protein from chicory plants. CC -!- The enzyme hydroxylates carbon C-6 of germacra-1(10),4,11(13)-trien- CC 12-oate to give 6alpha-hydroxygermacra-1(10),4,11(13)-trien-12-oate, CC which spontaneously cyclises to form the lactone ring. CC -!- Formerly EC 1.14.13.120. DR F8S1I0, C7BL2_LACSA; X2JE85, C7BL2_TANPA; G3GBK0, C7BL3_CICIN; //