enzymes underlying carbon-catabolite inactivation in wild-type cells ( a mechanism proposed to be possibly triggered by proteinase b ) such as cytoplasmic malate dehydrogenase , fructose-1,6-bisphosphatase , phosphoenolpyruvate carboxykinase and isocitrate lyase , are inactivated also in the mutant .
C0014442
enzymes
C0030946
proteinase