Abstract
Galacturonic acid, and oligo- and poly-galacturonic acids induced the synthesis of endopolygalacturonase, exopolygalacturonase, pectinesterase, and enzymes responsible for galacturonic acid metabolism in astrain of Acrocylindrium. These enzymes had similar characteristics for inducer specificity, time curves of induction, and catabolite repression. In the absence of inducers, mutants constitutive for exopolygalacturonase failed to synthesize endopolygalacturonase, pectinesterase, and enzymes responsible for galacturonic acid metabolism. However, the rate of the induced synthesis on galacturonic acid of endopolygalacturonase and pectinesterase in mutants was much faster than that in the wild-type strain. A relationship between the induced synthesis of these enzymes was discussed.
