CATH Domain 1ayuA00

CATH Classification

Level	CATH Code	Description
	3	Alpha Beta
	3.90	Alpha-Beta Complex
	3.90.70	Cathepsin B; Chain A
	3.90.70.10	Cysteine proteinases

Domain Context

CATH Clusters

Superfamily	Cysteine proteinases
Functional Family

Enzyme Information

3.4.22.38

Cathepsin K.

based on mapping to UniProt P43235

Broad proteolytic activity. With small-molecule substrates and inhibitors, the major determinant of specificity is P2, which is preferably Leu, Met > Phe, and not Arg.

-!- Prominently expressed in mammalian osteoclasts, and believed to play a role in bone resorption. -!- Belongs to peptidase family C1.

UniProtKB Entries (1)

P43235

CATK_HUMAN

Homo sapiens

Cathepsin K

PDB Structure

PDB	1AYU
External Links	PDBSum Proteopedia
Method	X-RAY DIFFRACTION
Organism	Spodoptera
Primary Citation	Design of potent and selective human cathepsin K inhibitors that span the active site. Thompson, S.K., Halbert, S.M., Bossard, M.J., Tomaszek, T.A., Levy, M.A., Zhao, B., Smith, W.W., Abdel-Meguid, S.S., Janson, C.A., D'Alessio, K.J., McQueney, M.S., Amegadzie, B.Y., Hanning, C.R., DesJarlais, R.L., Briand, J., Sarkar, S.K., Huddleston, M.J., Ijames, C.F., Carr, S.A., Garnes, K.T., Shu, A., Heys, J.R., Bradbeer, J., Zembryki, D., Lee-Rykaczewski, L., James, I.E., Lark, M.W., Drake, F.H., Gowen, M., Gleason, J.G., Veber, D.F. Proc.Natl.Acad.Sci.USA