EC 3.5 Acting on carbon-nitrogen bonds, other than peptide bonds
This subclass contains those enzymes that hydrolyse amides, amidines and other C-N bonds. Sub-subclasses are based on the substrate: linear amides (EC 3.5.1), cyclic amides (EC 3.5.2), linear amidines (EC 3.5.3), cyclic amidines (EC 3.5.4), nitriles (EC 3.5.5) and other compounds (EC 3.5.99).