Allantoinase and allantoicase synthesis in Pseudomonas aeruginosa

Abstract

Allantoinase (allantoin amidohydrolase, EC 3.5.2.5.) and allantoicase (allantoate amidinohydrolase, EC 3.5.3.4) of Pseudomonas aeruginosa are inducible enzymes, whose syntheses are enhanced by the presence of allantoin, allantoate, ureidoglycolate, N-carbamoyl-L-asparagine, N-carbamoyl-L-aspartate, hydantoate, and diureidomethane. For each compound a specific ratio between the activities of allantoinase and allantoicase was obtained. The synthesis of these enzymes is not coordinately controlled. N-Carbamoyl-L-aspartate, hydantoate, and diureidomethane are gratuitous inducers.