ID 1.14.15.18 DE calcidiol 1-monooxygenase. AN 25-hydroxycholecalciferol 1-hydroxylase. AN 25-hydroxycholecalciferol 1-monooxygenase. AN 25-hydroxyvitamin D-1 alpha hydroxylase. AN 25-hydroxyvitamin D3 1alpha-hydroxylase. AN 25-OHD-1 alpha-hydroxylase. CA (1) calcidiol + 2 H(+) + O2 + 2 reduced [adrenodoxin] = calcitriol + CA H2O + 2 oxidized [adrenodoxin]. CA (2) 2 H(+) + O2 + 2 reduced [adrenodoxin] + secalciferol = calcitetrol + CA H2O + 2 oxidized [adrenodoxin]. CC -!- Formerly EC 1.14.13.13. DR O15528, CP27B_HUMAN; O35084, CP27B_MOUSE; O35132, CP27B_RAT ; //