Cathepsin

Cysteine endopeptidases are a class of proteases in which a catalytic cysteine residue participates in peptide bond hydrolysis. They include plant-derived proteolytic enzymes, lysosomal cathepsins, and endoproteases with specific cleavage-site preferences. Papain, ficin, and chymopapain are ...

The proteolytic enzyme network in cell injury involves calpains, caspases, cathepsins, MMP/ADAM family proteases, and the ubiquitin-proteasome system. Different proteolytic enzymes correspond to Ca²⁺ overload, apoptotic execution, lysosomal injury, extracellular matrix remodeling, and ...

Research on the cathepsin family is mainly used to elucidate mechanisms involving lysosomal proteolysis, antigen processing, cell death, matrix remodeling, and inflammatory responses. Members such as Cathepsin B, D, K, L, S, and G differ significantly in catalytic type, cellular localization, ...