deaminases

Enzymes catalyzing simple hydrolysis of C-NH₂ bonds of purines, pyrimidines, and pterins, thus producing ammonia (usually named in terms of the substrate, for example, guanine deaminases, adenosine deaminases, AMP deaminases, pterin deaminases); not generally used for deamination of noncyclic amides. Deaminases are distinguished from ammonia-lyases in that the latter produce an unsaturation at the point of NH₃ removal.

Synonym(s): deaminating enzymes

[EC group 3.5.4] Enzymes catalyzing simple hydrolysis of C-NH₂ bonds of purines, pyrimidines, and pterins.
Synonym(s): deaminating enzymes.