3.4.22.1 amyloid beta peptide + H2O cathepsin B is involved in degradation of amyloid beta peptides, its inhibition can lead to amyloid beta accumulation, an early trigger of Alzheimer's disease, cystatin C regulates the enzyme negatively, CysC ablation ameliorates amyloid beta-associated neuronal and synaptic deficits in hippocampal circuits, neuroprotective effects of CysC ablation depend on CatB, overview 3.4.22.1 amyloid beta precursor protein + H2O cathepsin B selectively cleaves the wild-type beta-secretase site but not the rare Swedish mutant beta-secretase site 3.4.22.1 amyloid-beta + H2O - 3.4.22.1 caspase 1 precursor + H2O - 3.4.22.1 Collagen + H2O - 3.4.22.1 Collagen IV + H2O - 3.4.22.1 Collagen IV + H2O collagen IV of the basement membrane damaged by cathepsin B, that is released after mechanical injury, during initial post-traumatic stages, overview 3.4.22.1 Gelatin + H2O - 3.4.22.1 Laminin + H2O laminin of the basement membrane damaged by cathepsin B, that is released after mechanical injury, during initial post-traumatic stages, overview 3.4.22.1 additional information enzyme is involved in myoblast-myoblast fusion