The hydroxynitrile lyase from Arabidopsis thaliana shows almost identical 3D structure but opposite enantioselectivity and different reaction mechanism compared to other hNL. This structure (3DQZ) is published by Andexer et al.. Structures of human acetylcholinesterase in complex with pharmacologically important ligands are published by Cheung et al. and are available (4EY4, 4EY5, 4EY6, 4EY7, 4EY8).