All
 D08 Enzymes and Coenzymes D045762 +
 D08.811 Enzymes D004798 +
 D08.811.277 Hydrolases D006867 +
 D08.811.277.151 Aminohydrolases D000619 +
 D08.811.277.151.300 GTP Cyclohydrolase D006136 
 D08.811.277.151.350 Guanine Deaminase D006148 
 D08.811.277.151.486 Nucleoside Deaminases D009700 +
 D08.811.277.151.653 Nucleotide Deaminases D009709 +
 D08.811.277.151.418 Methenyltetrahydrofolate Cyclohydrolase D045064