1-(5-phospho-beta-D-ribosyl)-5'-AMP + H2O => 1-(5-phospho-beta-D-ribosyl)-5-[(5-phospho-beta-D-ribosylamino)methylideneamino]imidazole-4-carboxamide
1-(5-phospho-beta-d-ribosyl)-5'-amp + h2o => 1-(5-phospho-beta-d-ribosyl)-5-[(5-phospho-beta-d-ribosylamino)methylideneamino]imidazole-4-carboxamide