Converts indole-3-acetaldoxime to indole cyanohydrin. Involved in the biosynthetic pathway to 4-hydroxyindole-3-carbonyl nitrile (4-OH-ICN), a cyanogenic metabolite required for inducible pathogen defense. 90% decrease of all indole-3-carbonyl nitrile (ICN) derivatives and increased susceptibility to virulent Pseudomonas syringae. Belongs to the cytochrome P450 family. Extended N-terminus. Extended N-terminus.