THE INDUCED CONCURRENT FORMATION OF α-GALACTOSIDASE AND β-GALACTOSIDASE IN ESCHERICHIA COLI B

Abstract

An investigation of the concurrent induction of α-galactosidase and β-galactosidase in Escherichia coli B has been made. It was observed that galactose and a number of α- and β-galactosides induced the biosynthesis of both enzymes. However, some α-galactosides stimulated the synthesis of only α-galactosidase and some β-galactosides induced the formation of only β-galactosidase. The significance of these observations in relation to the nature of the immediate inducer has been discussed.