Name	CTSK
Full Name	Cathepsin K
Synonyms	Cathepsin O, Cathepsin O2, Cathepsin X \| CTSO, CTSO2
Primary ID	P43235
Links	- -
Type	protein
Relations	4
Inhibitors	Odanacatib
Function	Thiol protease involved in osteoclastic bone resorption and may participate partially in the disorder of bone remodeling. Displays potent endoprotease activity against fibrinogen at acid pH. May play an important role in extracellular matrix degradation. Involved in the release of thyroid hormone thyroxine (T4) by limited proteolysis of TG/thyroglobulin in the thyroid follicle lumen (PubMed:11082042).