| PF02836 | Glycosyl hydrolases family 2, TIM barrel domain (Glyco_hydro_2_C) | Glycosyl hydrolases family 2, TIM barrel domain | This family contains beta-galactosidase, beta-mannosidase and beta-glucuronidase activities. | Domain |
| PF00703 | Glycosyl hydrolases family 2 (Glyco_hydro_2) | Glycosyl hydrolases family 2 | This family contains beta-galactosidase, beta-mannosidase and beta-glucuronidase activities. | Domain |
| PF02837 | Glycosyl hydrolases family 2, sugar binding domain (Glyco_hydro_2_N) | Glycosyl hydrolases family 2, sugar binding domain | This family contains beta-galactosidase, beta-mannosidase and beta-glucuronidase activities and has a jelly-roll fold. The domain binds the sugar moiety during the sugar-hydrolysis reaction. | Domain |
| PF16353 | Beta-galactosidase, domain 4 (LacZ_4) | Beta-galactosidase, domain 4 | This entry represents domain 4 found in beta-galactosidase [1] and it is organised in a jelly-roll type barrel (Rutkiewicz-Krotewicz M. et al. Crystals 2018, 8(1), 13, https://doi.org/10.3390/cryst8010013). | Domain |
| PF02929 | Beta galactosidase small chain (Bgal_small_N) | Beta galactosidase small chain | This domain comprises the small chain of dimeric beta-galactosidases EC:3.2.1.23. This domain is also found in single chain beta-galactosidase. | Domain |