Can convert indole-3-acetonitrile to the plant hormone indole-3-acetic acid. a nitrile + 2 H2O = a carboxylate + NH4(+) Tightly associated with the plasma membrane. Barely detectable in young rosettes, but is strongly expressed during bolting, flowering, and especially fruit development. By indole-3-acetonitrile, abscisic acid (ABA), salicylic acid (SA), sodium nitroprusside (SNP), salt stress and dehydration stress. Belongs to the carbon-nitrogen hydrolase superfamily. Nitrilase family.