ⓘ Pterin deaminase. In enzymology, a pterin deaminase is an enzyme that catalyzes the chemical reaction 2-amino-4-hydroxypteridine + H 2 O ⇌ {\displaystyle \right ..

                                     

ⓘ Pterin deaminase

In enzymology, a pterin deaminase is an enzyme that catalyzes the chemical reaction

2-amino-4-hydroxypteridine + H 2 O ⇌ {\displaystyle \rightleftharpoons } 2.4-dihydroxypteridine + NH 3

Thus, the two substrates of this enzyme are 2-amino-4-hydroxypteridine and H 2 O, whereas its two products are 2.4-dihydroxypteridine and NH 3.

This enzyme belongs to the family of hydrolases, those acting on carbon-nitrogen bonds other than peptide bonds, specifically in cyclic amidines. The systematic name of this enzyme class is 2-amino-4-hydroxypteridine aminohydrolase. This enzyme is also called acrasinase.

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