(9Z,12Z)-octadecadienoate + reduced [NADPH--hemoprotein reductase] + O2 => (13R)-hydroxy-(9Z,11E)-octadecadienoate + oxidized [NADPH--hemoprotein reductase] + H2O + H(+)
(9z,12z)-octadecadienoate + reduced [nadph--hemoprotein reductase] + o2 => (13r)-hydroxy-(9z,11e)-octadecadienoate + oxidized [nadph--hemoprotein reductase] + h2o + h(+)