. . . "C5380031" . . . . . "GO:0062185" . . . . . "secalciferol 1-monooxygenase activity"@en . . . . . . . . . "secalciferol 1-monooxygenase activity"@en . . "secalciferol 1-monooxygenase activity"@en . . "Catalysis of the reaction:2 H(+) + O2 + 2 reduced [adrenodoxin] + secalciferol = calcitetrol + H2O + 2 oxidized [adrenodoxin]."@en .