FIG. 4.
Genetic organization of α-galactosidase genes in LAB. The genes are indicated by polygons of the same size regardless of their length. White, carbohydrate degradation enzymes; black, sugar transporters; gray, transcriptional regulators. The following genes code for the indicated proteins: aga, melA α-galactosidase; galK, galactokinase; galT, galactose 1-phosphate uridylyltransferase; galM, mutarotase; bgaB, bgaC, lacL, and lacM β-galactosidase; scrB, sucrose phosphorylase; scrK, fructokinase; gftA, sucrose 6-phosphate hydrolase; dexB, dextran glucosidase; galR, scrR, rafR, rafS, msmR, and orf2 transcriptional regulators; orf3 and orf4, putative PTS EIIB and EIIC domains; scrA, PTS EIISuc; rafP (also named lacS2 in Lactobacillus plantarum WCFS1), galactoside-pentose-hexuronide transporter; msmEFGK and rafEFG, ABC transporters; rafX, unknown. GB#, GenBank accession number.