| deaminating enzymes | Enzymes catalyzing simple hydrolysis of C-NH2 bonds of purines, pyrimidines, and pterins, usually named in terms of the substrate, e.g., guanine deaminases, adenosine deaminases, AMP deaminases, pterin deaminases and thus producing ammonia; not generally used for deamination of noncyclic amides. Deaminases are distinguished from ammonia-lyases (EC group 4.3.1) in that the latter produce an unsaturation at the point of NH3 removal. Synonym: deaminating enzymes. (05 Mar 2000) |
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