all-trans retinoic acid 18-hydroxylase activity
Catalysis of the reaction: all-trans-retinoate + O2 + reduced [NADPH--hemoprotein reductase] = all-trans-18-hydroxyretinoate + H+ + H2O + oxidized [NADPH--hemoprotein reductase].
GO:0004497
monooxygenase activity
is_a