| http://www.w3.org/ns/prov#value | - Cathepsin K is a cysteine protease that plays a role in the degradation of protein components of the bone matrix during bone resorption.1 Produced by bone resorbing macrophages and synovial fibroblasts, Cathepsin K cleaves proteins such as collagen type I, collagen type II and osteonectin.2 It has potential as a drug target in autoimmune diseases and osteoporosis.3, 4
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