Homo sapiens Protein: CCNK
Summary
InnateDB Protein IDBP-19549.6
Last Modified 2014-10-13 [Report errors or provide feedback]
Gene Symbol CCNK
Protein Name cyclin K
Synonyms CPR4;
Species Homo sapiens
Ensembl Protein ENSP00000374529
InnateDB Gene IDBG-19541 (CCNK)
Protein Structure
UniProt Annotation
Function Regulatory subunit of cyclin-dependent kinases that mediates activation of target kinases. Plays a role in transcriptional regulation via its role in regulating the phosphorylation of the C-terminal domain (CTD) of the large subunit of RNA polymerase II (POLR2A). {ECO:0000269PubMed:10574912, ECO:0000269PubMed:22012619, ECO:0000269PubMed:9632813}.
Subcellular Localization Nucleus {ECO:0000269PubMed:22012619}.
Disease Associations
Tissue Specificity Ubiquitously expressed. Highest levels in testis. {ECO:0000269PubMed:9632813}.
Comments
Interactions
Number of Interactions This gene and/or its encoded proteins are associated with 32 experimentally validated interaction(s) in this database.
Experimentally validated
Total 32 [view]
Protein-Protein 31 [view]
Protein-DNA 0
Protein-RNA 0
DNA-DNA 1 [view]
RNA-RNA 0
DNA-RNA 0
Gene Ontology

Molecular Function
Accession GO Term
GO:0004693 cyclin-dependent protein serine/threonine kinase activity
GO:0005515 protein binding
GO:0008353 RNA polymerase II carboxy-terminal domain kinase activity
GO:0019901 protein kinase binding
Biological Process
GO:0000079 regulation of cyclin-dependent protein serine/threonine kinase activity
GO:0001701 in utero embryonic development
GO:0006355 regulation of transcription, DNA-templated
GO:0006366 transcription from RNA polymerase II promoter
GO:0006468 protein phosphorylation
GO:0006974 cellular response to DNA damage stimulus
GO:0007067 mitotic nuclear division
GO:0071157 negative regulation of cell cycle arrest
Cellular Component
GO:0002944 cyclin K-CDK12 complex
GO:0002945 cyclin K-CDK13 complex
GO:0005634 nucleus
Protein Structure and Domains
PDB ID
InterPro IPR006671 Cyclin, N-terminal
IPR013763 Cyclin-like
PFAM PF00134
PRINTS
PIRSF
SMART SM00385
TIGRFAMs
Post-translational Modifications
Modification
Cross-References
SwissProt O75909
PhosphoSite PhosphoSite-O75909
TrEMBL G3V2Q3
UniProt Splice Variant
Entrez Gene 8812
UniGene Hs.605039
RefSeq NP_001092872
HUGO HGNC:1596
OMIM 603544
CCDS CCDS45160
HPRD
IMGT
EMBL AB209373 AF060515 AF542236 AH009612 AL110504 BC015935 BT006950 BX247958 CH471061
GenPept AAD09978 AAF82290 AAH15935 AAN06829 AAP35596 BAD92610 CAD62298 EAW81670 EAW81672