Catalyzes the omega-hydroxylation of various fatty acids (FA). Acts on saturated and unsaturated fatty acids with chain lengths from C12 to C18. Plays a major role in the biosynthesis of extracellular lipids. Involved in the biosynthesis of hydroxylated fatty acids required for cutin biosynthesis, cuticle development and repression of bacterial type III gene expression. an organic molecule + O2 + reduced [NADPH--hemoprotein reductase] = an alcohol + H(+) + H2O + oxidized [NADPH--hemoprotein reductase] Expressed in leaves, stems, flowers and siliques. Expressed at low levels in roots. Expressed in guard cells of cotyledons and leaves. Expressed in the seed coat inner integument layer facing the endosperm in the stages from globular to torpedo embryo. By abscisic acid (ABA), auxin, wounding and drought, and in etiolated and dark-adapted seedlings. No visible phenotype under normal growth conditions, but mutant plants have reduced content of cutin, loose cuticle membrane ultrastructure, show increased permeability to water vapor and display enhanced disease severity to a virulent strain of the bacterial pathogen P.syringae. Belongs to the cytochrome P450 family.