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Table 1 Common glycosyl hydrolases present in mammalian lactobacilli

From: Catabolic flexibility of mammalian-associated lactobacilli

Enzyme EC number Gene Reaction Associated pathways References
Alpha-amylase 3.2.1.1 amyA Endo-hydrolysis of (1->4)-alpha-D-glucosidic linkages in polysaccharides containing three or more (1->4)-alpha-linked D-glucose units Starch and sucrose metabolism [9, 10, 14, 26]
Oligo-1,6-glucosidase 3.2.1.10 malL Hydrolysis of (1->6)-alpha-D-glucosidic linkages in some oligosaccharides produced from starch and glycogen by EC 3.2.1.1 (alpha-amylase), and in isomaltose Starch and sucrose metabolism [911, 13, 14, 26]
Maltose-6’-phosphate glucosidase 3.2.1.122 glvA Hydrolysis of maltose 6’-phosphate Starch and sucrose metabolism [18]
Alpha-glucosidase 3.2.1.20 malZ Hydrolysis of terminal, non-reducing (1->4)-linked alpha-D-glucose residues with release of D-glucose Galactose, starch and sucrose metabolism [911, 13, 18, 26, 46]
Beta-glucosidase 3.2.1.21 bglX Hydrolysis of terminal, non-reducing beta-D-glucosyl residues with release of beta-D-glucose Starch and sucrose metabolism [911, 13, 18, 26]
Alpha-galactosidase 3.2.1.22 rafA Hydrolysis of terminal, non-reducing alpha-D-galactose residues in alpha-D-galactosides, including galactose oligosaccharides, galactomannans and galactolipids Galactose metabolism [911, 13, 14, 18, 26, 46]
Beta-galactosidase 3.2.1.23 lacZ Hydrolysis of terminal non-reducing beta-D-galactose residues in beta-D-galactosides Galactose metabolism [911, 14, 18, 26, 46]
Beta-fructofuranosidase 3.2.1.26 sacA Hydrolysis of terminal non-reducing beta-D-fructofuranoside residues in beta-D-fructofuranosides Galactose, starch and sucrose metabolism [911, 13, 14, 18, 26]
Beta-N-acetylhexosaminidase 3.2.1.52 nagZ Hydrolysis of terminal non-reducing N-acetyl-D-hexosamine residues in N-acetyl-beta-D-hexosaminides Amino sugar and nucleotide sugar metabolism [9, 10, 14, 26]
6-phospho-beta-galactosidase 3.2.1.85 lacG Hydrolysis of 6-phospho-beta-D-galactosides Galactose metabolism [10, 13, 18]
6-phospho-beta-glucosidase 3.2.1.86 bglA Hydrolysis of 6-phospho-beta-D-glucosyl-(1->4)-D-glucose Glycolysis [911, 13, 18, 26]
Trehalose-6-phosphate hydrolase 3.2.1.93 treC Hydrolysis of alpha,alpha-trehalose 6-phosphate Starch and sucrose metabolism [10, 11, 13, 14, 18]