this mutation allowed for ( i ) the glucose repression-insensitive synthesis ot the enzymes maltase , galactokinase , alpha-galactosidase , reduced nicotinamide adenine dinucleotide-cytochrome c reductase , and cytochrome c oxidase and ( ii ) growth on maltose in the presence of the gratuitous glucose repressor d-glucosamine .
C0017715
glucose
C0017725
glucose