PBID | Uniprot | Name | Gene | Alternative | Organism | Uniprot Description |
PB0100 | P43235 | Cathepsin K | CTSK | CTS02, CTSO, CTSO1, CTSO2, PKND, PYCD | Homo_sapiens | 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). |
Domains | Gene Ontology |
PF00112 (Peptidase_C1) PF08246 (Inhibitor_I29) |
GO:0001968 (enables) fibronectin binding
GO:0004197 (enables) cysteine-type endopeptidase activity GO:0004252 (enables) serine-type endopeptidase activity GO:0005515 (enables) protein binding GO:0005518 (enables) collagen binding GO:0008233 (enables) peptidase activity GO:0008234 (enables) cysteine-type peptidase activity GO:0016787 (enables) hydrolase activity GO:0043394 (enables) proteoglycan binding GO:0000422 (involved in) autophagy of mitochondrion GO:0001957 (involved in) intramembranous ossification GO:0006508 (involved in) proteolysis GO:0006590 (involved in) thyroid hormone generation GO:0006955 (involved in) immune response GO:0022617 (involved in) extracellular matrix disassembly GO:0030574 (involved in) collagen catabolic process GO:0045453 (involved in) bone resorption GO:0051603 (involved in) proteolysis involved in cellular protein catabolic process GO:0061037 (involved in) negative regulation of cartilage development GO:0005615 (is active in) extracellular space GO:0005576 (located in) extracellular region GO:0005654 (located in) nucleoplasm GO:0005737 (located in) cytoplasm GO:0005764 (located in) lysosome GO:0005886 (located in) plasma membrane GO:0009897 (located in) external side of plasma membrane GO:0016020 (located in) membrane GO:0016324 (located in) apical plasma membrane GO:0036021 (located in) endolysosome lumen GO:0043202 (located in) lysosomal lumen GO:0043231 (located in) intracellular membrane-bounded organelle |
External Links | Description |
Intact | Open source database system and analysis tools for molecular interaction data. |
Protein Atlas | An open access resource for human proteins |
InterPro (new pfam) | InterPro provides functional analysis of proteins by classifying them into families and predicting domains and important sites. |