The enzyme purine imidazole-ring cyclase (EC 4.3.2.4)
catalyzes
Catalysis () is the process of increasing the rate of a chemical reaction by adding a substance known as a catalyst (). Catalysts are not consumed in the reaction and remain unchanged after it. If the reaction is rapid and the catalyst recyc ...
the
chemical reaction
:DNA 4,6-diamino-5-formamidopyrimidine
DNA adenine + H
2O
This enzyme belongs to the family of
lyase
In biochemistry, a lyase is an enzyme that catalyzes the breaking (an elimination reaction) of various chemical bonds by means other than hydrolysis (a substitution reaction) and oxidation, often forming a new double bond or a new ring structure. ...
s, specifically amidine lyases. The
systematic name of this enzyme class is DNA-4,6-diamino-5-formamidopyrimidine C
8-N
9-lyase (cyclizing DNA-adenine-forming). Other names in common use include DNA-4,6-diamino-5-formamidopyrimidine 8-''C'',9-''N''-lyase (cyclizing), DNA-4,6-diamino-5-formamidopyrimidine 8-''C'',9-''N''-lyase (cyclizing, DNA-adenine-forming).
References
*
EC 4.3.2
Enzymes of unknown structure
{{enzyme-stub