All UniProtKB/Swiss-Prot entries corresponding to class 6.3.3.-.
The following ENZYME entries belong to class 6.3.3.-:
6.3.3.1 Phosphoribosylformylglycinamidine cyclo-ligase 6.3.3.2 5-formyltetrahydrofolate cyclo-ligase 6.3.3.3 Dethiobiotin synthase 6.3.3.4 (Carboxyethyl)arginine beta-lactam-synthase 6.3.3.5 O-ureido-D-serine cyclo-ligase 6.3.3.6 Carbapenam-3-carboxylate synthase