9-cis-retinoate + reduced [NADPH--hemoprotein reductase] + O2 <=> 9-cis-4-hydroxyretinoate + oxidized [NADPH--hemoprotein reductase] + H2O + H(+)
9-cis-retinoate + reduced [nadph--hemoprotein reductase] + o2 <=> 9-cis-4-hydroxyretinoate + oxidized [nadph--hemoprotein reductase] + h2o + h(+)