ID 1.14.14.91 DE trans-cinnamate 4-monooxygenase. AN CA4H. AN cinnamate 4-hydroxylase. AN cinnamate 4-monooxygenase. AN cinnamic acid 4-hydroxylase. AN cinnamic acid 4-monooxygenase. AN CYP73A1. CA (E)-cinnamate + O2 + reduced [NADPH--hemoprotein reductase] = (E)-4- CA coumarate + H(+) + H2O + oxidized [NADPH--hemoprotein reductase]. CC -!- A cytochrome P450 (heme-thiolate) protein found in plants. CC -!- The enzyme is involved in flavonoid biosynthesis. CC -!- Formerly EC 1.14.13.11. DR F1B282, C4H1_PETHY ; F1B283, C4H2_PETHY ; P92994, TCMO_ARATH ; DR P48522, TCMO_CATRO ; O81928, TCMO_CICAR ; Q96423, TCMO_GLYEC ; DR Q04468, TCMO_HELTU ; P37114, TCMO_MEDSA ; A0A2H5AIX7, TCMO_NARPS ; DR Q5W6F1, TCMO_ORYSJ ; Q43067, TCMO_PEA ; Q43033, TCMO_PETCR ; DR Q43054, TCMO_POPKI ; O24312, TCMO_POPTM ; Q9AR74, TCMO_RUTGR ; DR Q94IP1, TCMO_SORBI ; Q42797, TCMO_SOYBN ; P37115, TCMO_VIGRR ; DR Q43240, TCMO_ZINEL ; //