Control of maltase synthesis in yeast.

Maltose fermentation in Saccharomyces species requires the presence of at least one of five unlinked MAL loci: MAL1, MAL2, MAL3, MAL4 and MAL6. Each MAL locus is complex consisting of at least three genes: a trans-acting activator, a maltose permease, and maltase. All the MAL loci show homology to each other both at the sequence level as determined by… CONTINUE READING