Gene Gene information from NCBI Gene database.
Entrez ID 1513
Gene name Cathepsin K
Gene symbol CTSK
Synonyms (NCBI Gene)
CTS02CTSOCTSO1CTSO2PKNDPYCD
Chromosome 1
Chromosome location 1q21.3
Summary The protein encoded by this gene is a lysosomal cysteine proteinase involved in bone remodeling and resorption. This protein, which is a member of the peptidase C1 protein family, is predominantly expressed in osteoclasts. However, the encoded protein is
SNPs SNP information provided by dbSNP.
40
SNP ID Visualize variation Clinical significance Consequence
rs29001685 A>G Likely-pathogenic Coding sequence variant, missense variant
rs74315301 T>C Pathogenic Terminator codon variant, stop lost
rs74315302 C>G Pathogenic Missense variant, coding sequence variant
rs74315303 G>A,T Likely-pathogenic Stop gained, coding sequence variant, synonymous variant
rs74315304 G>A,T Likely-pathogenic Missense variant, coding sequence variant
miRNA miRNA information provided by mirtarbase database.
84
miRTarBase ID miRNA Experiments Reference
MIRT038461 hsa-miR-296-3p CLASH 23622248
MIRT915948 hsa-miR-23a CLIP-seq
MIRT915949 hsa-miR-23b CLIP-seq
MIRT915950 hsa-miR-23c CLIP-seq
MIRT915951 hsa-miR-3154 CLIP-seq
Transcription factors Transcription factors information provided by TRRUST V2 database.
2
Transcription factor Regulation Reference
MITF Activation 21602817
SPI1 Unknown 15304486
Gene ontology (GO) Gene Ontology (GO) annotations describing the biological processes, molecular functions, and cellular components associated with a gene.
48
GO ID Ontology Definition Evidence Reference
GO:0000423 Process Mitophagy HMP 24912190
GO:0001968 Function Fibronectin binding IEA
GO:0001968 Function Fibronectin binding IPI 22952693
GO:0004197 Function Cysteine-type endopeptidase activity IBA
GO:0004197 Function Cysteine-type endopeptidase activity IDA 22952693
Other IDs Other IDs provides unique identifiers for this gene in OMIM, HGNC, and Ensembl databases.
MIM HGNC e!Ensembl
601105 2536 ENSG00000143387
Protein Protein information from UniProt database.
UniProt ID Unique identifier for the protein in the UniProt database. Click to view detailed protein information.
P43235
Protein name Cathepsin K (EC 3.4.22.38) (Cathepsin O) (Cathepsin O2) (Cathepsin X)
Protein 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 deg
PDB 1ATK , 1AU0 , 1AU2 , 1AU3 , 1AU4 , 1AYU , 1AYV , 1AYW , 1BGO , 1BY8 , 1MEM , 1NL6 , 1NLJ , 1Q6K , 1SNK , 1TU6 , 1U9V , 1U9W , 1U9X , 1VSN , 1YK7 , 1YK8 , 1YT7 , 2ATO , 2AUX , 2AUZ , 2BDL , 2R6N , 3C9E , 3H7D , 3KW9 , 3KWB , 3KWZ , 3KX1 , 3O0U , 3O1G , 3OVZ , 4DMX , 4DMY , 4N79 , 4N8W , 4X6H , 4X6I , 4X6J , 4YV8 , 4YVA , 5J94 , 5JA7 , 5JH3 , 5TDI , 5TUN
Family and domains

Pfam

Accession ID Position in sequence Description Type
PF08246 Inhibitor_I29 26 86 Cathepsin propeptide inhibitor domain (I29) Domain
PF00112 Peptidase_C1 115 328 Papain family cysteine protease Domain
Tissue specificity TISSUE SPECIFICITY: Predominantly expressed in osteoclasts (bones) (PubMed:7805878). Expressed in thyroid epithelial cells (PubMed:11082042). {ECO:0000269|PubMed:11082042, ECO:0000269|PubMed:7805878}.
Sequence
Sequence length 329
Interactions View interactions
Pathways Pathway information has different metabolic/signaling pathways associated with genes.
  KEGG  Reactome
  Lysosome
Apoptosis
Osteoclast differentiation
Toll-like receptor signaling pathway
Rheumatoid arthritis
  Collagen degradation
Degradation of the extracellular matrix
Activation of Matrix Metalloproteinases
Trafficking and processing of endosomal TLR
MHC class II antigen presentation
RUNX1 regulates transcription of genes involved in differentiation of keratinocytes
Associated diseases Disease associations from ClinVar (causal & non-causal) and other databases (OMIM, Orphanet, GWAS, etc.).
17
Evidence Score: ★☆☆☆☆  Gene-disease association found in Text Mining only ★★☆☆☆  Found in Text Mining and Unknown/Other Associations ★★★☆☆  Reported in Unknown/Other Associations across ≥2 Sources ★★★★☆  ClinVar: Pathogenic/Likely Pathogenic (<5 Variants) ★★★★★  ClinVar: Pathogenic/Likely Pathogenic (≥5 Variants)
Causal Diseases associated with Pathogenic or Likely Pathogenic variants in ClinVar
Phenotype Name Clinical Significance dbSNP ID RCV Accession Evidence Score
Abnormality of the skeletal system Likely pathogenic; Pathogenic rs762780994 RCV001814239
★★★★☆
ClinVar: Pathogenic / Likely Pathogenic (<5 Variants)
Pyknodysostosis Pathogenic; Likely pathogenic rs1654043546, rs2101951671, rs759107967, rs760640027, rs199919553, rs2101953129, rs1057517279, rs2101953595, rs2101951545, rs1237746431, rs2101954034, rs2525178790, rs2525180438, rs2525166561, rs1225660627
View all (73 more)
RCV005635146
RCV003469773
RCV003469777
RCV003469727
RCV001733850
View all (87 more)
★★★★★
ClinVar: Pathogenic / Likely Pathogenic (≥5 Variants)
Unknown / Other Associations ClinVar entries with uncertain/conflicting evidence, and associations from other databases (OMIM, Orphanet, GWAS, etc.) where the gene is not established as causal.
Phenotype Name Clinical Significance Source Evidence Score
ATRIAL FIBRILLATION GWAS catalog
★★☆☆☆
Found in Text Mining + Unknown/Other Associations
Chronic lymphocytic leukemia/small lymphocytic lymphoma Conflicting classifications of pathogenicity ClinVar
★★☆☆☆
Found in Text Mining + Unknown/Other Associations
CTSK-related disorder Benign; Likely benign ClinVar
★★☆☆☆
Found in Text Mining + Unknown/Other Associations
DENTAL ENAMEL HYPOPLASIA Disgenet
★★☆☆☆
Found in Text Mining + Unknown/Other Associations
Associations from Text Mining Disease associations identified through text mining
Disease Name Disease (Merged) Source PMID Relationship Type Evidence Score
Acute monocytic leukemia Monocytic Leukemia BEFREE 28837273
★☆☆☆☆
Found in Text Mining only
Adenocarcinoma Adenocarcinoma BEFREE 15162377
★☆☆☆☆
Found in Text Mining only
Alveolar Soft Part Sarcoma Alveolar Sarcoma BEFREE 21602817, 26975036
★☆☆☆☆
Found in Text Mining only
Anemia Anemia HPO_DG
★☆☆☆☆
Found in Text Mining only
Anemia, Sickle Cell Anemia BEFREE 26330244
★☆☆☆☆
Found in Text Mining only
Aortic Aneurysm Aortic Aneurysm BEFREE 20203298, 21817099
★☆☆☆☆
Found in Text Mining only
Aortic Aneurysm Abdominal Aortic aneurysm Pubtator 17322367, 22804761, 23958260, 24833013 Associate
★☆☆☆☆
Found in Text Mining only
Aortic Aneurysm, Abdominal Aortic Aneurysm BEFREE 21817099, 26960947, 28087488
★☆☆☆☆
Found in Text Mining only
Arteriosclerosis Arteriosclerosis BEFREE 17098827, 17420353, 17522380
★☆☆☆☆
Found in Text Mining only
Arthritis Arthritis BEFREE 12379519, 18240253, 23543761, 30773420, 8703060
★☆☆☆☆
Found in Text Mining only