Glycosidases are found in various organisms, including humans, plants, bacteria, and fungi. In humans, they are predominantly located in the digestive tract, lysosomes, and other cellular compartments. There are several types of glycosidases, each specific to certain substrates. For example, glucosidases target glucose-containing bonds, while galactosidases target galactose-containing bonds. The diversity in substrate specificity allows glycosidases to participate in numerous biochemical pathways.