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Identification
HMDB Protein ID HMDBP01360
Secondary Accession Numbers
  • 6656
Name Cell division protein kinase 9
Synonyms
  1. C-2K
  2. Cell division cycle 2-like protein kinase 4
  3. Cyclin-dependent kinase 9
  4. Serine/threonine-protein kinase PITALRE
Gene Name CDK9
Protein Type Enzyme
Biological Properties
General Function Involved in protein kinase activity
Specific Function Member of the cyclin-dependent kinase pair (CDK9/cyclin- T) complex, also called positive transcription elongation factor b (P-TEFb), which facilitates the transition from abortive to production elongation by phosphorylating the CTD (C-terminal domain) of the large subunit of RNA polymerase II (RNAP II), SUPT5H and RDBP. The CDK9/cyclin-K complex has also a kinase activity toward CTD of RNAP II and can substitute for P-TEFb in vitro
Pathways Not Available
Reactions Not Available
GO Classification
Function
binding
catalytic activity
transferase activity
transferase activity, transferring phosphorus-containing groups
kinase activity
nucleoside binding
purine nucleoside binding
adenyl nucleotide binding
adenyl ribonucleotide binding
atp binding
protein kinase activity
protein serine/threonine kinase activity
Process
phosphorus metabolic process
phosphate metabolic process
metabolic process
cellular metabolic process
protein amino acid phosphorylation
phosphorylation
Cellular Location
  1. Nucleus
Gene Properties
Chromosome Location Chromosome:9
Locus 9q34.1
SNPs CDK9
Gene Sequence
>1119 bp
ATGGCAAAGCAGTACGACTCGGTGGAGTGCCCTTTTTGTGATGAAGTTTCCAAATACGAG
AAGCTCGCCAAGATCGGCCAAGGCACCTTCGGGGAGGTGTTCAAGGCCAGGCACCGCAAG
ACCGGCCAGAAGGTGGCTCTGAAGAAGGTGCTGATGGAAAACGAGAAGGAGGGGTTCCCC
ATTACAGCCTTGCGGGAGATCAAGATCCTTCAGCTTCTAAAACACGAGAATGTGGTCAAC
TTGATTGAGATTTGTCGAACCAAAGCTTCCCCCTATAACCGCTGCAAGGGTAGTATATAC
CTGGTGTTCGACTTCTGCGAGCATGACCTTGCTGGGCTGTTGAGCAATGTTTTGGTCAAG
TTCACGCTGTCTGAGATCAAGAGGGTGATGCAGATGCTGCTTAACGGCCTCTACTACATC
CACAGAAACAAGATCCTGCATAGGGACATGAAGGCTGCTAATGTGCTTATCACTCGTGAT
GGGGTCCTGAAGCTGGCAGACTTTGGGCTGGCCCGGGCCTTCAGCCTGGCCAAGAACAGC
CAGCCCAACCGCTACACCAACCGTGTGGTGACACTCTGGTACCGGCCCCCGGAGCTGTTG
CTCGGGGAGCGGGACTACGGCCCCCCCATTGACCTGTGGGGTGCTGGGTGCATCATGGCA
GAGATGTGGACCCGCAGCCCCATCATGCAGGGCAACACGGAGCAGCACCAACTCGCCCTC
ATCAGTCAGCTCTGCGGCTCCATCACCCCTGAGGTGTGGCCAAACGTGGACAACTATGAG
CTGTACGAAAAGCTGGAGCTGGTCAAGGGCCAGAAGCGGAAGGTGAAGGACAGGCTGAAG
GCCTATGTGCGTGACCCATACGCACTGGACCTCATCGACAAGCTGCTGGTGCTGGACCCT
GCCCAGCGCATCGACAGCGATGACGCCCTCAACCACGACTTCTTCTGGTCCGACCCCATG
CCCTCCGACCTCAAGGGCATGCTCTCCACCCACCTGACGTCCATGTTCGAGTACTTGGCA
CCACCGCGCCGGAAGGGCAGCCAGATCACCCAGCAGTCCACCAACCAGAGTCGCAATCCC
GCCACCACCAACCAGACGGAGTTTGAGCGCGTCTTCTGA
Protein Properties
Number of Residues 372
Molecular Weight 42777.2
Theoretical pI 9.07
Pfam Domain Function
Signals
  • None
Transmembrane Regions
  • None
Protein Sequence
>Cell division protein kinase 9
MAKQYDSVECPFCDEVSKYEKLAKIGQGTFGEVFKARHRKTGQKVALKKVLMENEKEGFP
ITALREIKILQLLKHENVVNLIEICRTKASPYNRCKGSIYLVFDFCEHDLAGLLSNVLVK
FTLSEIKRVMQMLLNGLYYIHRNKILHRDMKAANVLITRDGVLKLADFGLARAFSLAKNS
QPNRYTNRVVTLWYRPPELLLGERDYGPPIDLWGAGCIMAEMWTRSPIMQGNTEQHQLAL
ISQLCGSITPEVWPNVDNYELYEKLELVKGQKRKVKDRLKAYVRDPYALDLIDKLLVLDP
AQRIDSDDALNHDFFWSDPMPSDLKGMLSTHLTSMFEYLAPPRRKGSQITQQSTNQSRNP
ATTNQTEFERVF
GenBank ID Protein Not Available
UniProtKB/Swiss-Prot ID P50750
UniProtKB/Swiss-Prot Entry Name CDK9_HUMAN
PDB IDs Not Available
GenBank Gene ID L25676
GeneCard ID CDK9
GenAtlas ID CDK9
HGNC ID HGNC:1780
References
General References
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  12. Fu TJ, Peng J, Lee G, Price DH, Flores O: Cyclin K functions as a CDK9 regulatory subunit and participates in RNA polymerase II transcription. J Biol Chem. 1999 Dec 3;274(49):34527-30. [PubMed:10574912 ]
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  22. Fujinaga K, Irwin D, Huang Y, Taube R, Kurosu T, Peterlin BM: Dynamics of human immunodeficiency virus transcription: P-TEFb phosphorylates RD and dissociates negative effectors from the transactivation response element. Mol Cell Biol. 2004 Jan;24(2):787-95. [PubMed:14701750 ]
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