| Predicate | Object |
|---|---|
| rdf:type | |
| biopax3:comment |
FUNCTION: Serine/threonine kinase involved in cell cycle control and in RNA polymerase II-mediated RNA transcription. Cyclin- dependent kinases (CDKs) are activated by the binding to a cyclin and mediate the progression through the cell cycle. Each different complex controls a specific transition between 2 subsequent phases in the cell cycle. Required for both activation and complex formation of CDK1/cyclin-B during G2-M transition, and for activation of CDK2/cyclins during G1-S transition (but not complex formation). CDK7 is the catalytic subunit of the CDK-activating kinase (CAK) complex. Phosphorylates SPT5/SUPT5H, SF1/NR5A1, POLR2A, p53/TP53, CDK1, CDK2, CDK4, CDK6 and CDK11B/CDK11. CAK activates the cyclin-associated kinases CDK1, CDK2, CDK4 and CDK6 by threonine phosphorylation, thus regulating cell cycle progression. CAK complexed to the core-TFIIH basal transcription factor activates RNA polymerase II by serine phosphorylation of the repetitive C-terminus domain (CTD) of its large subunit (POLR2A), allowing its escape from the promoter and elongation of the transcripts. Phosphorylation of POLR2A in complex with DNA promotes transcription initiation by triggering dissociation from DNA. Its expression and activity are constant throughout the cell cycle. Upon DNA damage, triggers p53/TP53 activation by phosphorylation, but is inactivated in turn by p53/TP53; this feedback loop may lead to an arrest of the cell cycle and of the transcription, helping in cell recovery, or to apoptosis. Required for DNA-bound peptides-mediated transcription and cellular growth inhibition. CATALYTIC ACTIVITY: ATP + a protein = ADP + a phosphoprotein. CATALYTIC ACTIVITY: ATP + [DNA-directed RNA polymerase] = ADP + [DNA-directed RNA polymerase] phosphate. ENZYME REGULATION: Inactivated by phosphorylation. Repressed by roscovitine (seliciclib, CYC202), R547 (Ro-4584820) and SNS-032 (BMS-387032). The association of p53/TP53 to the CAK complex in response to DNA damage reduces kinase activity toward CDK2 and RNA polymerase II repetitive C-terminus domain (CTD), thus stopping cell cycle progression. The inactivation by roscovitine promotes caspase-mediated apoptosis in leukemic cells. SUBUNIT: Associates primarily with cyclin-H (CCNH) and MAT1 to form the CAK complex. CAK can further associate with the core- TFIIH to form the TFIIH basal transcription factor; this complex is sensitive to UV light. The CAK complex binds to p53/TP53 in response to DNA damage. Interacts with CDK2, SF1/NR5A1, PUF60 and PRKCI. SUBCELLULAR LOCATION: Nucleus. Cytoplasm. Cytoplasm, perinuclear region. Note=Colocalizes with PRKCI in the cytoplasm and nucleus. Translocates from the nucleus to cytoplasm and perinuclear region in response to DNA-bound peptides. TISSUE SPECIFICITY: Ubiquitous. INDUCTION: Repressed by DNA-bound peptides. PTM: Phosphorylation of Ser-164 during mitosis inactivates the enzyme. Phosphorylation of Thr-170 is required for activity. Phosphorylated at Ser-164 and Thr-170 by CDK2. SIMILARITY: Belongs to the protein kinase superfamily. CMGC Ser/Thr protein kinase family. CDC2/CDKX subfamily. SIMILARITY: Contains 1 protein kinase domain. WEB RESOURCE: Name=NIEHS-SNPs; URL="http://egp.gs.washington.edu/data/cdk7/"; GENE SYNONYMS:CDK7 CAK CAK1 CDKN7 MO15 STK1. COPYRIGHT: Protein annotation is derived from the UniProt Consortium (http://www.uniprot.org/). Distributed under the Creative Commons Attribution-NoDerivs License.,
SEQUENCE 346 AA; 39038 MW; 0A94BFA7DD416CEB CRC64;
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| biopax3:xref | |
| biopax3:displayName |
CDK7_HUMAN
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| biopax3:name |
2.7.11.22,
2.7.11.23,
39 kDa protein kinase,
CDK-activating kinase 1,
CDK7,
Cell division protein kinase 7,
Serine/threonine-protein kinase 1,
TFIIH basal transcription factor complex kinase subunit,
p39 Mo15
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| biopax3:entityFeature | |
| biopax3:organism | |
| biopax3:sequence |
MALDVKSRAKRYEKLDFLGEGQFATVYKARDKNTNQIVAIKKIKLGHRSEAKDGINRTALREIKLLQELSHPNIIGLLDAFGHKSNISLVFDFMETDLEVIIKDNSLVLTPSHIKAYMLMTLQGLEYLHQHWILHRDLKPNNLLLDENGVLKLADFGLAKSFGSPNRAYTHQVVTRWYRAPELLFGARMYGVGVDMWAVGCILAELLLRVPFLPGDSDLDQLTRIFETLGTPTEEQWPDMCSLPDYVTFKSFPGIPLHHIFSAAGDDLLDLIQGLFLFNPCARITATQALKMKYFSNRPGPTPGCQLPRPNCPVETLKEQSNPALAIKRKRTEALEQGGLPKKLIF
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| biopax3:standardName |
Cyclin-dependent kinase 7
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