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UniProtKB - Q99J95 (CDK9_MOUSE)

Entry version 173 (02 Jun 2021)
Sequence version 1 (01 Jun 2001)
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Protein

Cyclin-dependent kinase 9

Gene

Cdk9

Organism
Mus musculus (Mouse)
Status
Reviewed-Annotation score:

Annotation score:5 out of 5

<p>The annotation score provides a heuristic measure of the annotation content of a UniProtKB entry or proteome. This score <strong>cannot</strong> be used as a measure of the accuracy of the annotation as we cannot define the 'correct annotation' for any given protein.<p><a href='/help/annotation_score' target='_top'>More...</a></p>-Experimental evidence at protein leveli <p>This indicates the type of evidence that supports the existence of the protein. Note that the 'protein existence' evidence does not give information on the accuracy or correctness of the sequence(s) displayed.<p><a href='/help/protein_existence' target='_top'>More...</a></p>

<p>This section provides any useful information about the protein, mostly biological knowledge.<p><a href='/help/function_section' target='_top'>More...</a></p>Functioni

Protein kinase involved in the regulation of transcription. 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 productive elongation by phosphorylating the CTD (C-terminal domain) of the large subunit of RNA polymerase II (RNAP II) POLR2A, SUPT5H and RDBP. This complex is inactive when in the 7SK snRNP complex form. Phosphorylates EP300, MYOD1, RPB1/POLR2A and AR and the negative elongation factors DSIF and NELF. Regulates cytokine inducible transcription networks by facilitating promoter recognition of target transcription factors (e.g. TNF-inducible RELA/p65 activation and IL-6-inducible STAT3 signaling). Promotes RNA synthesis in genetic programs for cell growth, differentiation and viral pathogenesis. P-TEFb is also involved in cotranscriptional histone modification, mRNA processing and mRNA export. Modulates a complex network of chromatin modifications including histone H2B monoubiquitination (H2Bub1), H3 lysine 4 trimethylation (H3K4me3) and H3K36me3; integrates phosphorylation during transcription with chromatin modifications to control co-transcriptional histone mRNA processing. The CDK9/cyclin-K complex has also a kinase activity towards CTD of RNAP II and can substitute for CDK9/cyclin-T P-TEFb in vitro. Replication stress response protein; the CDK9/cyclin-K complex is required for genome integrity maintenance, by promoting cell cycle recovery from replication arrest and limiting single-stranded DNA amount in response to replication stress, thus reducing the breakdown of stalled replication forks and avoiding DNA damage. In addition, probable function in DNA repair of isoform 2 via interaction with KU70/XRCC6. Promotes cardiac myocyte enlargement. RPB1/POLR2A phosphorylation on 'Ser-2' in CTD activates transcription. AR phosphorylation modulates AR transcription factor promoter selectivity and cell growth. DSIF and NELF phosphorylation promotes transcription by inhibiting their negative effect. The phosphorylation of MYOD1 enhances its transcriptional activity and thus promotes muscle differentiation.

By similarity

<p>This subsection of the <a href="http://www.uniprot.org/help/function%5Fsection">Function</a> section describes the catalytic activity of an enzyme, i.e. a chemical reaction that the enzyme catalyzes.<p><a href='/help/catalytic_activity' target='_top'>More...</a></p>Catalytic activityi

<p>This subsection of the <a href="http://www.uniprot.org/help/function%5Fsection">Function</a> section describes regulatory mechanisms for enzymes, transporters or microbial transcription factors, and reports the components which regulate (by activation or inhibition) the reaction.<p><a href='/help/activity_regulation' target='_top'>More...</a></p>Activity regulationi

Activation by Thr-186 phosphorylation is calcium Ca2+ signaling pathway-dependent; actively inactivated by dephosphorylation mediated by PPP1CA, PPM1A and PPM1B. Reversibly repressed by acetylation at Lys-44 and Lys-48 (By similarity).By similarity

Sites

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the <a href="http://www.uniprot.org/help/function%5Fsection">Function</a> section describes the interaction between a single amino acid and another chemical entity. Priority is given to the annotation of physiological ligands.<p><a href='/help/binding' target='_top'>More...</a></p>Binding sitei48ATPPROSITE-ProRule annotation1
<p>This subsection of the <a href="http://www.uniprot.org/help/function%5Fsection">Function</a> section is used for enzymes and indicates the residues directly involved in catalysis.<p><a href='/help/act_site' target='_top'>More...</a></p>Active sitei149Proton acceptorPROSITE-ProRule annotation1
Binding sitei167ATPPROSITE-ProRule annotation1

Regions

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the <a href="http://www.uniprot.org/help/function%5Fsection">Function</a> section describes a region in the protein which binds nucleotide phosphates. It always involves more than one amino acid and includes all residues involved in nucleotide-binding.<p><a href='/help/np_bind' target='_top'>More...</a></p>Nucleotide bindingi25 – 33ATPPROSITE-ProRule annotation9
Nucleotide bindingi104 – 106ATPPROSITE-ProRule annotation3

<p>The <a href="http://www.geneontology.org/">Gene Ontology (GO)</a> project provides a set of hierarchical controlled vocabulary split into 3 categories:<p><a href='/help/gene_ontology' target='_top'>More...</a></p>GO - Molecular functioni

Complete GO annotation on QuickGO ...

GO - Biological processi

Complete GO annotation on QuickGO ...

<p>UniProtKB Keywords constitute a <a href="http://www.uniprot.org/keywords">controlled vocabulary</a> with a hierarchical structure. Keywords summarise the content of a UniProtKB entry and facilitate the search for proteins of interest.<p><a href='/help/keywords' target='_top'>More...</a></p>Keywordsi

Molecular functionKinase, Serine/threonine-protein kinase, Transferase
Biological processDNA damage, DNA repair, Transcription, Transcription regulation
LigandATP-binding, Nucleotide-binding

Enzyme and pathway databases

Reactome - a knowledgebase of biological pathways and processes

More...Reactomei		R-MMU-112382, Formation of RNA Pol II elongation complex
R-MMU-2173796, SMAD2/SMAD3:SMAD4 heterotrimer regulates transcription
R-MMU-674695, RNA Polymerase II Pre-transcription Events
R-MMU-6796648, TP53 Regulates Transcription of DNA Repair Genes
R-MMU-6807505, RNA polymerase II transcribes snRNA genes
R-MMU-75955, RNA Polymerase II Transcription Elongation
R-MMU-9018519, Estrogen-dependent gene expression

<p>This section provides information about the protein and gene name(s) and synonym(s) and about the organism that is the source of the protein sequence.<p><a href='/help/names_and_taxonomy_section' target='_top'>More...</a></p>Names & Taxonomyi

<p>This subsection of the <a href="http://www.uniprot.org/help/names%5Fand%5Ftaxonomy%5Fsection">Names and taxonomy</a> section provides an exhaustive list of all names of the protein, from commonly used to obsolete, to allow unambiguous identification of a protein.<p><a href='/help/protein_names' target='_top'>More...</a></p>Protein namesi
Recommended name:
Cyclin-dependent kinase 9 (EC:2.7.11.22, EC:2.7.11.23)
Alternative name(s):
Cell division protein kinase 9
<p>This subsection of the <a href="http://www.uniprot.org/help/names%5Fand%5Ftaxonomy%5Fsection">Names and taxonomy</a> section indicates the name(s) of the gene(s) that code for the protein sequence(s) described in the entry. Four distinct tokens exist: 'Name', 'Synonyms', 'Ordered locus names' and 'ORF names'.<p><a href='/help/gene_name' target='_top'>More...</a></p>Gene namesi
Name:Cdk9
<p>This subsection of the <a href="http://www.uniprot.org/help/names%5Fand%5Ftaxonomy%5Fsection">Names and taxonomy</a> section provides information on the name(s) of the organism that is the source of the protein sequence.<p><a href='/help/organism-name' target='_top'>More...</a></p>OrganismiMus musculus (Mouse)
<p>This subsection of the <a href="http://www.uniprot.org/help/names%5Fand%5Ftaxonomy%5Fsection">Names and taxonomy</a> section shows the unique identifier assigned by the NCBI to the source organism of the protein. This is known as the 'taxonomic identifier' or 'taxid'.<p><a href='/help/taxonomic_identifier' target='_top'>More...</a></p>Taxonomic identifieri10090 [NCBI]
<p>This subsection of the <a href="http://www.uniprot.org/help/names%5Fand%5Ftaxonomy%5Fsection">Names and taxonomy</a> section contains the taxonomic hierarchical classification lineage of the source organism. It lists the nodes as they appear top-down in the taxonomic tree, with the more general grouping listed first.<p><a href='/help/taxonomic_lineage' target='_top'>More...</a></p>Taxonomic lineageiEukaryota › Metazoa › Chordata › Craniata › Vertebrata › Euteleostomi › Mammalia › Eutheria › Euarchontoglires › Glires › Rodentia › Myomorpha › Muroidea › Muridae › Murinae › Mus › Mus
<p>This subsection of the <a href="http://www.uniprot.org/help/names%5Fand%5Ftaxonomy%5Fsection">Names and taxonomy</a> section is present for entries that are part of a <a href="http://www.uniprot.org/proteomes">proteome</a>, i.e. of a set of proteins thought to be expressed by organisms whose genomes have been completely sequenced.<p><a href='/help/proteomes_manual' target='_top'>More...</a></p>Proteomesi
  • UP000000589 <p>A UniProt <a href="http://www.uniprot.org/manual/proteomes%5Fmanual">proteome</a> can consist of several components.<br></br>The component name refers to the genomic component encoding a set of proteins.<p><a href='/help/proteome_component' target='_top'>More...</a></p> Componenti: Chromosome 2

Organism-specific databases

Mouse genome database (MGD) from Mouse Genome Informatics (MGI)

More...MGIi		MGI:1328368, Cdk9

<p>This section provides information on the location and the topology of the mature protein in the cell.<p><a href='/help/subcellular_location_section' target='_top'>More...</a></p>Subcellular locationi

Keywords - Cellular componenti

Cytoplasm, Nucleus

<p>This section provides information on the disease(s) and phenotype(s) associated with a protein.<p><a href='/help/pathology_and_biotech_section' target='_top'>More...</a></p>Pathology & Biotechi

Chemistry databases

ChEMBL database of bioactive drug-like small molecules

More...ChEMBLi		CHEMBL4105875

<p>This section describes post-translational modifications (PTMs) and/or processing events.<p><a href='/help/ptm_processing_section' target='_top'>More...</a></p>PTM / Processingi

Molecule processing

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the 'PTM / Processing' section describes the extent of a polypeptide chain in the mature protein following processing or proteolytic cleavage.<p><a href='/help/chain' target='_top'>More...</a></p>ChainiPRO_00000858011 – 372Cyclin-dependent kinase 9Add BLAST372

Amino acid modifications

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the 'PTM / Processing' section specifies the position and type of each modified residue excluding <a href="http://www.uniprot.org/manual/lipid">lipids</a>, <a href="http://www.uniprot.org/manual/carbohyd">glycans</a> and <a href="http://www.uniprot.org/manual/crosslnk">protein cross-links</a>.<p><a href='/help/mod_res' target='_top'>More...</a></p>Modified residuei44N6-acetyllysine; by P300/CBP, PCAF/KAT2B and GCN5/KAT2ABy similarity1
Modified residuei48N6-acetyllysine; by PCAF/KAT2B and GCN5/KAT2ABy similarity1
Modified residuei175PhosphoserineBy similarity1
Modified residuei186Phosphothreonine; by CaMK1DBy similarity1
Modified residuei347Phosphoserine; by CDK9 and PKABy similarity1
Modified residuei350Phosphothreonine; by CDK9By similarity1
Modified residuei353Phosphoserine; by CDK9By similarity1
Modified residuei354Phosphothreonine; by CDK9By similarity1
Modified residuei357Phosphoserine; by CDK9By similarity1
Modified residuei362Phosphothreonine; by CDK9By similarity1
Modified residuei363Phosphothreonine; by CDK9By similarity1

<p>This subsection of the <a href="http://www.uniprot.org/help/ptm%5Fprocessing%5Fsection">PTM/processing</a> section describes post-translational modifications (PTMs). This subsection <strong>complements</strong> the information provided at the sequence level or describes modifications for which <strong>position-specific data is not yet available</strong>.<p><a href='/help/post-translational_modification' target='_top'>More...</a></p>Post-translational modificationi

Autophosphorylation at Thr-186, Ser-347, Thr-350, Ser-353, Thr-354 and Ser-357 triggers kinase activity by promoting cyclin and substrate binding upon conformational changes. Thr-186 phosphorylation requires the calcium Ca2+ signaling pathway, including CaMK1D and calmodulin. This inhibition is relieved by Thr-29 dephosphorylation. Phosphorylation at Ser-175 inhibits kinase activity. Can be phosphorylated on either Thr-362 or Thr-363 but not on both simultaneously (By similarity).By similarity
Dephosphorylation of Thr-186 by PPM1A and PPM1B blocks CDK9 activity and may lead to CDK9 proteasomal degradation. However, PPP1CA-mediated Thr-186 dephosphorylation is required to release P-TEFb from its inactive P-TEFb/7SK snRNP complex. Dephosphorylation of C-terminus Thr and Ser residues by protein phosphatase-1 (PP1) triggers CDK9 activity (By similarity).By similarity
N6-acetylation of Lys-44 promotes kinase activity, whereas acetylation of both Lys-44 and Lys-48 mediated by PCAF/KAT2B and GCN5/KAT2A reduces kinase activity. The acetylated form associates with PML bodies in the nuclear matrix and with the transcriptionally silent HIV-1 genome; deacetylated upon transcription stimulation. Deacetylated by SIRT7, promoting the kinase activity and subsequent 'Ser-2' phosphorylation of the C-terminal domain (CTD) of RNA polymerase II.By similarity
Polyubiquitinated and thus activated by UBR5. This ubiquitination is promoted by TFIIS/TCEA1 and favors 'Ser-2' phosphorylation of RPB1/POLR2A CTD (By similarity).By similarity

Keywords - PTMi

Acetylation, Phosphoprotein, Ubl conjugation

Proteomic databases

Encyclopedia of Proteome Dynamics

More...EPDi		Q99J95

jPOST - Japan Proteome Standard Repository/Database

More...jPOSTi		Q99J95

PaxDb, a database of protein abundance averages across all three domains of life

More...PaxDbi		Q99J95

PeptideAtlas

More...PeptideAtlasi		Q99J95

PRoteomics IDEntifications database

More...PRIDEi		Q99J95

ProteomicsDB: a multi-organism proteome resource

More...ProteomicsDBi		280041 [Q99J95-1]
280042 [Q99J95-2]
280043 [Q99J95-3]

PTM databases

iPTMnet integrated resource for PTMs in systems biology context

More...iPTMneti		Q99J95

Comprehensive resource for the study of protein post-translational modifications (PTMs) in human, mouse and rat.

More...PhosphoSitePlusi		Q99J95

<p>This section provides information on the expression of a gene at the mRNA or protein level in cells or in tissues of multicellular organisms.<p><a href='/help/expression_section' target='_top'>More...</a></p>Expressioni

<p>This subsection of the 'Expression' section provides information on the expression of a gene at the mRNA or protein level in cells or in tissues of multicellular organisms. By default, the information is derived from experiments at the mRNA level, unless specified 'at protein level'.<br></br>Examples: <a href="http://www.uniprot.org/uniprot/P92958#expression">P92958</a>, <a href="http://www.uniprot.org/uniprot/Q8TDN4#expression">Q8TDN4</a>, <a href="http://www.uniprot.org/uniprot/O14734#expression">O14734</a><p><a href='/help/tissue_specificity' target='_top'>More...</a></p>Tissue specificityi

Expressed at high levels in brain and kidney.1 Publication

Gene expression databases

Bgee dataBase for Gene Expression Evolution

More...Bgeei		ENSMUSG00000009555, Expressed in granulocyte and 320 other tissues

ExpressionAtlas, Differential and Baseline Expression

More...ExpressionAtlasi		Q99J95, baseline and differential

Genevisible search portal to normalized and curated expression data from Genevestigator

More...Genevisiblei		Q99J95, MM

<p>This section provides information on the quaternary structure of a protein and on interaction(s) with other proteins or protein complexes.<p><a href='/help/interaction_section' target='_top'>More...</a></p>Interactioni

<p>This subsection of the <a href="http://www.uniprot.org/help/interaction%5Fsection">'Interaction'</a> section provides information about the protein quaternary structure and interaction(s) with other proteins or protein complexes (with the exception of physiological receptor-ligand interactions which are annotated in the <a href="http://www.uniprot.org/help/function%5Fsection">'Function'</a> section).<p><a href='/help/subunit_structure' target='_top'>More...</a></p>Subunit structurei

Component of the super elongation complex (SEC), at least composed of EAF1, EAF2, CDK9, MLLT3/AF9, AFF (AFF1 or AFF4), the P-TEFb complex and ELL (ELL, ELL2 or ELL3). Associates with CCNT1/cyclin-T1, CCNT2/cyclin-T2 (isoform A and isoform B) or CCNK/cyclin-K to form active P-TEFb. P-TEFb forms a complex with AFF4/AF5Q31 and is part of the super elongation complex (SEC).

Component of a complex which is composed of at least 5 members: HTATSF1/Tat-SF1, P-TEFb complex, RNA pol II, SUPT5H, and NCL/nucleolin. Associates with UBR5 and forms a transcription regulatory complex composed of CDK9, RNAP II, UBR5 and TFIIS/TCEA1 that can stimulate target gene transcription (e.g. gamma fibrinogen/FGG) by recruiting their promoters.

Component of the 7SK snRNP inactive complex which is composed of at least 8 members: P-TEFb (composed of CDK9 and CCNT1/cyclin-T1), HEXIM1, HEXIM2, LARP7, BCDIN3, SART3 proteins and 7SK and U6 snRNAs. This inactive 7SK snRNP complex can also interact with NCOR1 and HDAC3, probably to regulate CDK9 acetylation. Release of P-TEFb from P-TEFb/7SK snRNP complex requires both PP2B to transduce calcium Ca2+ signaling in response to stimuli (e.g. UV or hexamethylene bisacetamide (HMBA)), and PPP1CA to dephosphorylate Thr-186. This released P-TEFb remains inactive in the pre-initiation complex with BRD4 until new Thr-186 phosphorylation occurs after the synthesis of a short RNA.

Interacts with BRD4; to target chromatin binding.

Interacts with JMJD6.

Interacts with activated nuclear STAT3 and RELA/p65. Binds to AR and MYOD1.

Forms a complex composed of CDK9, CCNT1/cyclin-T1, EP300 and GATA4 that stimulates hypertrophy in cardiomyocytes (By similarity). The large PER complex involved in the repression of transcriptional termination is composed of at least PER2, CDK9, DDX5, DHX9, NCBP1 and POLR2A (active) (PubMed:22767893).

Interacts with HSF1 (By similarity).

Interacts with TBX21 (PubMed:27292648).

Interacts with WDR43 (PubMed:31128943).

By similarity3 Publications

<p>This subsection of the '<a href="http://www.uniprot.org/help/interaction%5Fsection">Interaction</a>' section provides information about binary protein-protein interactions. The data presented in this section are a quality-filtered subset of binary interactions automatically derived from the <a href="https://www.ebi.ac.uk/intact/">IntAct database</a>. It is updated at every <a href="http://www.uniprot.org/help/synchronization">UniProt release</a>.<p><a href='/help/binary_interactions' target='_top'>More...</a></p>Binary interactionsi

Hide details

GO - Molecular functioni

Complete GO annotation on QuickGO ...

Protein-protein interaction databases

The Biological General Repository for Interaction Datasets (BioGRID)

More...BioGRIDi		223714, 8 interactors

ComplexPortal: manually curated resource of macromolecular complexes

More...ComplexPortali		CPX-230, Positive transcription elongation factor B, CDK9-cyclinT1 complex
CPX-323, Positive transcription elongation factor B, CDK9-cyclinT2a complex
CPX-324, Positive transcription elongation factor B, CDK9-cyclinT2b complex

CORUM comprehensive resource of mammalian protein complexes

More...CORUMi		Q99J95

Database of interacting proteins

More...DIPi		DIP-46368N

Protein interaction database and analysis system

More...IntActi		Q99J95, 104 interactors

Molecular INTeraction database

More...MINTi		Q99J95

STRING: functional protein association networks

More...STRINGi		10090.ENSMUSP00000009699

Miscellaneous databases

RNAct, Protein-RNA interaction predictions for model organisms.

More...RNActi		Q99J95, protein

<p>This section provides information on the tertiary and secondary structure of a protein.<p><a href='/help/structure_section' target='_top'>More...</a></p>Structurei

3D structure databases

SWISS-MODEL Repository - a database of annotated 3D protein structure models

More...SMRi		Q99J95

Database of comparative protein structure models

More...ModBasei		Search...

<p>This section provides information on sequence similarities with other proteins and the domain(s) present in a protein.<p><a href='/help/family_and_domains_section' target='_top'>More...</a></p>Family & Domainsi

Domains and Repeats

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the <a href="http://www.uniprot.org/help/family%5Fand%5Fdomains%5Fsection">Family and Domains</a> section describes the position and type of a domain, which is defined as a specific combination of secondary structures organized into a characteristic three-dimensional structure or fold.<p><a href='/help/domain' target='_top'>More...</a></p>Domaini19 – 315Protein kinasePROSITE-ProRule annotationAdd BLAST297

Region

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the 'Family and Domains' section describes a region of interest that cannot be described in other subsections.<p><a href='/help/region' target='_top'>More...</a></p>Regioni166 – 191T-loopBy similarityAdd BLAST26
Regioni343 – 372DisorderedSequence analysisAdd BLAST30

Compositional bias

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the 'Family and Domains' section describes the position of regions of compositional bias within the protein and the particular type of amino acids that are over-represented within those regions.<p><a href='/help/compbias' target='_top'>More...</a></p>Compositional biasi345 – 372Polar residuesSequence analysisAdd BLAST28

<p>This subsection of the 'Family and domains' section provides information about the sequence similarity with other proteins.<p><a href='/help/sequence_similarities' target='_top'>More...</a></p>Sequence similaritiesi

Belongs to the protein kinase superfamily. CMGC Ser/Thr protein kinase family. CDC2/CDKX subfamily.Curated

Phylogenomic databases

evolutionary genealogy of genes: Non-supervised Orthologous Groups

More...eggNOGi		KOG0669, Eukaryota

Ensembl GeneTree

More...GeneTreei		ENSGT00940000155373

The HOGENOM Database of Homologous Genes from Fully Sequenced Organisms

More...HOGENOMi		CLU_000288_181_1_1

InParanoid: Eukaryotic Ortholog Groups

More...InParanoidi		Q99J95

Identification of Orthologs from Complete Genome Data

More...OMAi		KDPTGCD

Database of Orthologous Groups

More...OrthoDBi		925637at2759

Database for complete collections of gene phylogenies

More...PhylomeDBi		Q99J95

TreeFam database of animal gene trees

More...TreeFami		TF101039

Family and domain databases

Integrated resource of protein families, domains and functional sites

More...InterProi		View protein in InterPro
IPR011009, Kinase-like_dom_sf
IPR000719, Prot_kinase_dom
IPR017441, Protein_kinase_ATP_BS
IPR008271, Ser/Thr_kinase_AS

Pfam protein domain database

More...Pfami		View protein in Pfam
PF00069, Pkinase, 1 hit

Simple Modular Architecture Research Tool; a protein domain database

More...SMARTi		View protein in SMART
SM00220, S_TKc, 1 hit

Superfamily database of structural and functional annotation

More...SUPFAMi		SSF56112, SSF56112, 1 hit

PROSITE; a protein domain and family database

More...PROSITEi		View protein in PROSITE
PS00107, PROTEIN_KINASE_ATP, 1 hit
PS50011, PROTEIN_KINASE_DOM, 1 hit
PS00108, PROTEIN_KINASE_ST, 1 hit

<p>This section displays by default the canonical protein sequence and upon request all isoforms described in the entry. It also includes information pertinent to the sequence(s), including <a href="http://www.uniprot.org/help/sequence%5Flength">length</a> and <a href="http://www.uniprot.org/help/sequences">molecular weight</a>. The information is filed in different subsections. The current subsections and their content are listed below:<p><a href='/help/sequences_section' target='_top'>More...</a></p>Sequences (3+)i

<p>This subsection of the <a href="http://www.uniprot.org/help/sequences%5Fsection">Sequence</a> section indicates if the <a href="http://www.uniprot.org/help/canonical%5Fand%5Fisoforms">canonical sequence</a> displayed by default in the entry is complete or not.<p><a href='/help/sequence_status' target='_top'>More...</a></p>Sequence statusi: Complete.

This entry describes 3 <p>This subsection of the 'Sequence' section lists the alternative protein sequences (isoforms) that can be generated from the same gene by a single or by the combination of up to four biological events (alternative promoter usage, alternative splicing, alternative initiation and ribosomal frameshifting). Additionally, this section gives relevant information on each alternative protein isoform.<p><a href='/help/alternative_products' target='_top'>More...</a></p> isoformsi produced by alternative splicing. AlignAdd to basket

This entry has 3 described isoforms and 3 potential isoforms that are computationally mapped.Show allAlign All

Isoform 1 (identifier: Q99J95-1) [UniParc]FASTAAdd to basket

This isoform has been chosen as the <div> <p><b>What is the canonical sequence?</b><p><a href='/help/canonical_and_isoforms' target='_top'>More...</a></p>canonicali sequence. All positional information in this entry refers to it. This is also the sequence that appears in the downloadable versions of the entry.

« Hide
        10         20         30         40         50
MAKQYDSVEC PFCDEVTKYE KLAKIGQGTF GEVFKAKHRQ TGQKVALKKV 
        60         70         80         90        100
LMENEKEGFP ITALREIKIL QLLKHENVVN LIEICRTKAS PYNRCKGSIY 
       110        120        130        140        150
LVFDFCEHDL AGLLSNVLVK FTLSEIKRVM QMLLNGLYYI HRNKILHRDM 
       160        170        180        190        200
KAANVLITRD GVLKLADFGL ARAFSLAKNS QPNRYTNRVV TLWYRPPELL 
       210        220        230        240        250
LGERDYGPPI DLWGAGCIMA EMWTRSPIMQ GNTEQHQLAL ISQLCGSITP 
       260        270        280        290        300
EVWPNVDKYE LFEKLELVKG QKRKVKDRLK AYVRDPYALD LIDKLLVLDP 
       310        320        330        340        350
AQRIDSDDAL NHDFFWSDPM PSDLKGMLST HLTSMFEYLA PPRRKGSQIT 
       360        370 
QQSTNQSRNP ATTNQTEFER VF
Length:372
Mass (Da):42,762
Last modified:June 1, 2001 - v1
<p>The checksum is a form of redundancy check that is calculated from the sequence. It is useful for tracking sequence updates.</p> <p>It should be noted that while, in theory, two different sequences could have the same checksum value, the likelihood that this would happen is extremely low.</p> <p>However UniProtKB may contain entries with identical sequences in case of multiple genes (paralogs).</p> <p>The checksum is computed as the sequence 64-bit Cyclic Redundancy Check value (CRC64) using the generator polynomial: x<sup>64</sup> + x<sup>4</sup> + x<sup>3</sup> + x + 1. The algorithm is described in the ISO 3309 standard. </p> <p class="publication">Press W.H., Flannery B.P., Teukolsky S.A. and Vetterling W.T.<br /> <strong>Cyclic redundancy and other checksums</strong><br /> <a href="http://www.nrbook.com/b/bookcpdf.php">Numerical recipes in C 2nd ed., pp896-902, Cambridge University Press (1993)</a>)</p> Checksum:i973B18869F9963E3
GO
Isoform 2 (identifier: Q99J95-2) [UniParc]FASTAAdd to basket

The sequence of this isoform differs from the canonical sequence as follows:
     1-51: Missing.

Show »
Length:321
Mass (Da):37,002
Checksum:i4E7C2E2B4DB2042A
GO
Isoform 3 (identifier: Q99J95-3) [UniParc]FASTAAdd to basket

The sequence of this isoform differs from the canonical sequence as follows:
     1-129: Missing.

Show »
Length:243
Mass (Da):28,026
Checksum:i99DBB3953EB6971A
GO

<p>In eukaryotic reference proteomes, unreviewed entries that are likely to belong to the same gene are computationally mapped, based on gene identifiers from Ensembl, EnsemblGenomes and model organism databases.<p><a href='/help/gene_centric_isoform_mapping' target='_top'>More...</a></p>Computationally mapped potential isoform sequencesi

There are 3 potential isoforms mapped to this entry.BLASTAlignShow allAdd to basket
EntryEntry nameProtein names
Gene namesLengthAnnotation
D6RHP4D6RHP4_MOUSE
Cyclin-dependent kinase 9
Cdk9
61Annotation score:

Annotation score:1 out of 5

<p>The annotation score provides a heuristic measure of the annotation content of a UniProtKB entry or proteome. This score <strong>cannot</strong> be used as a measure of the accuracy of the annotation as we cannot define the 'correct annotation' for any given protein.<p><a href='/help/annotation_score' target='_top'>More...</a></p>
B0R021B0R021_MOUSE
Cyclin-dependent kinase 9
Cdk9
54Annotation score:

Annotation score:1 out of 5

<p>The annotation score provides a heuristic measure of the annotation content of a UniProtKB entry or proteome. This score <strong>cannot</strong> be used as a measure of the accuracy of the annotation as we cannot define the 'correct annotation' for any given protein.<p><a href='/help/annotation_score' target='_top'>More...</a></p>
D6RGN3D6RGN3_MOUSE
Cyclin-dependent kinase 9
Cdk9
36Annotation score:

Annotation score:1 out of 5

<p>The annotation score provides a heuristic measure of the annotation content of a UniProtKB entry or proteome. This score <strong>cannot</strong> be used as a measure of the accuracy of the annotation as we cannot define the 'correct annotation' for any given protein.<p><a href='/help/annotation_score' target='_top'>More...</a></p>

<p>This subsection of the 'Sequence' section reports difference(s) between the protein sequence shown in the UniProtKB entry and other available protein sequences derived from the same gene.<p><a href='/help/sequence_caution' target='_top'>More...</a></p>Sequence cautioni

The sequence BAE25966 differs from that shown. Reason: Frameshift.Curated

Experimental Info

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the 'Sequence' section reports difference(s) between the canonical sequence (displayed by default in the entry) and the different sequence submissions merged in the entry. These various submissions may originate from different sequencing projects, different types of experiments, or different biological samples. Sequence conflicts are usually of unknown origin.<p><a href='/help/conflict' target='_top'>More...</a></p>Sequence conflicti122T → R in BAE34054 (PubMed:16141072).Curated1
Sequence conflicti154N → S in BAE25055 (PubMed:16141072).Curated1

Alternative sequence

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the 'Sequence' section describes the sequence of naturally occurring alternative protein isoform(s). The changes in the amino acid sequence may be due to alternative splicing, alternative promoter usage, alternative initiation, or ribosomal frameshifting.<p><a href='/help/var_seq' target='_top'>More...</a></p>Alternative sequenceiVSP_0162901 – 129Missing in isoform 3. 1 PublicationAdd BLAST129
Alternative sequenceiVSP_0162891 – 51Missing in isoform 2. 1 PublicationAdd BLAST51

Sequence databases

Select the link destinations:

EMBL nucleotide sequence database

More...EMBLi

GenBank nucleotide sequence database

More...GenBanki

DNA Data Bank of Japan; a nucleotide sequence database

More...DDBJi
Links Updated
AF327431 mRNA Translation: AAK15699.1
AF327569 Genomic DNA Translation: AAK15706.1
AK089276 mRNA Translation: BAC40824.1
AK142397 mRNA Translation: BAE25055.1
AK143217 mRNA Translation: BAE25312.1
AK144607 mRNA Translation: BAE25966.1 Frameshift.
AK157340 mRNA Translation: BAE34054.1
AL772271 Genomic DNA No translation available.
BC003901 mRNA Translation: AAH03901.1

The Consensus CDS (CCDS) project

More...CCDSi		CCDS15927.1 [Q99J95-1]

NCBI Reference Sequences

More...RefSeqi		NP_570930.1, NM_130860.3 [Q99J95-1]
XP_011237303.1, XM_011239001.1 [Q99J95-3]

Genome annotation databases

Ensembl eukaryotic genome annotation project

More...Ensembli		ENSMUST00000009699; ENSMUSP00000009699; ENSMUSG00000009555 [Q99J95-1]
ENSMUST00000120105; ENSMUSP00000113327; ENSMUSG00000009555 [Q99J95-2]

Database of genes from NCBI RefSeq genomes

More...GeneIDi		107951

KEGG: Kyoto Encyclopedia of Genes and Genomes

More...KEGGi		mmu:107951

UCSC genome browser

More...UCSCi		uc008jgn.2, mouse [Q99J95-1]

Keywords - Coding sequence diversityi

Alternative splicing

<p>This section provides links to proteins that are similar to the protein sequence(s) described in this entry at different levels of sequence identity thresholds (100%, 90% and 50%) based on their membership in UniProt Reference Clusters (<a href="http://www.uniprot.org/help/uniref">UniRef</a>).<p><a href='/help/similar_proteins_section' target='_top'>More...</a></p>Similar proteinsi

<p>This section is used to point to information related to entries and found in data collections other than UniProtKB.<p><a href='/help/cross_references_section' target='_top'>More...</a></p>Cross-referencesi

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
AF327431 mRNA Translation: AAK15699.1
AF327569 Genomic DNA Translation: AAK15706.1
AK089276 mRNA Translation: BAC40824.1
AK142397 mRNA Translation: BAE25055.1
AK143217 mRNA Translation: BAE25312.1
AK144607 mRNA Translation: BAE25966.1 Frameshift.
AK157340 mRNA Translation: BAE34054.1
AL772271 Genomic DNA No translation available.
BC003901 mRNA Translation: AAH03901.1
CCDSiCCDS15927.1 [Q99J95-1]
RefSeqiNP_570930.1, NM_130860.3 [Q99J95-1]
XP_011237303.1, XM_011239001.1 [Q99J95-3]

3D structure databases

SMRiQ99J95
ModBaseiSearch...

Protein-protein interaction databases

BioGRIDi223714, 8 interactors
ComplexPortaliCPX-230, Positive transcription elongation factor B, CDK9-cyclinT1 complex
CPX-323, Positive transcription elongation factor B, CDK9-cyclinT2a complex
CPX-324, Positive transcription elongation factor B, CDK9-cyclinT2b complex
CORUMiQ99J95
DIPiDIP-46368N
IntActiQ99J95, 104 interactors
MINTiQ99J95
STRINGi10090.ENSMUSP00000009699

Chemistry databases

ChEMBLiCHEMBL4105875

PTM databases

iPTMnetiQ99J95
PhosphoSitePlusiQ99J95

Proteomic databases

EPDiQ99J95
jPOSTiQ99J95
PaxDbiQ99J95
PeptideAtlasiQ99J95
PRIDEiQ99J95
ProteomicsDBi280041 [Q99J95-1]
280042 [Q99J95-2]
280043 [Q99J95-3]

Protocols and materials databases

Antibodypedia a portal for validated antibodies

More...Antibodypediai		1447, 553 antibodies

The DNASU plasmid repository

More...DNASUi		107951

Genome annotation databases

EnsembliENSMUST00000009699; ENSMUSP00000009699; ENSMUSG00000009555 [Q99J95-1]
ENSMUST00000120105; ENSMUSP00000113327; ENSMUSG00000009555 [Q99J95-2]
GeneIDi107951
KEGGimmu:107951
UCSCiuc008jgn.2, mouse [Q99J95-1]

Organism-specific databases

Comparative Toxicogenomics Database

More...CTDi		1025
MGIiMGI:1328368, Cdk9

Phylogenomic databases

eggNOGiKOG0669, Eukaryota
GeneTreeiENSGT00940000155373
HOGENOMiCLU_000288_181_1_1
InParanoidiQ99J95
OMAiKDPTGCD
OrthoDBi925637at2759
PhylomeDBiQ99J95
TreeFamiTF101039

Enzyme and pathway databases

ReactomeiR-MMU-112382, Formation of RNA Pol II elongation complex
R-MMU-2173796, SMAD2/SMAD3:SMAD4 heterotrimer regulates transcription
R-MMU-674695, RNA Polymerase II Pre-transcription Events
R-MMU-6796648, TP53 Regulates Transcription of DNA Repair Genes
R-MMU-6807505, RNA polymerase II transcribes snRNA genes
R-MMU-75955, RNA Polymerase II Transcription Elongation
R-MMU-9018519, Estrogen-dependent gene expression

Miscellaneous databases

BioGRID ORCS database of CRISPR phenotype screens

More...BioGRID-ORCSi		107951, 24 hits in 56 CRISPR screens

ChiTaRS: a database of human, mouse and fruit fly chimeric transcripts and RNA-sequencing data

More...ChiTaRSi		Cdk9, mouse

Protein Ontology

More...PROi		PR:Q99J95
RNActiQ99J95, protein

The Stanford Online Universal Resource for Clones and ESTs

More...SOURCEi		Search...

Gene expression databases

BgeeiENSMUSG00000009555, Expressed in granulocyte and 320 other tissues
ExpressionAtlasiQ99J95, baseline and differential
GenevisibleiQ99J95, MM

Family and domain databases

InterProiView protein in InterPro
IPR011009, Kinase-like_dom_sf
IPR000719, Prot_kinase_dom
IPR017441, Protein_kinase_ATP_BS
IPR008271, Ser/Thr_kinase_AS
PfamiView protein in Pfam
PF00069, Pkinase, 1 hit
SMARTiView protein in SMART
SM00220, S_TKc, 1 hit
SUPFAMiSSF56112, SSF56112, 1 hit
PROSITEiView protein in PROSITE
PS00107, PROTEIN_KINASE_ATP, 1 hit
PS50011, PROTEIN_KINASE_DOM, 1 hit
PS00108, PROTEIN_KINASE_ST, 1 hit

MobiDB: a database of protein disorder and mobility annotations

More...MobiDBi		Search...

<p>This section provides general information on the entry.<p><a href='/help/entry_information_section' target='_top'>More...</a></p>Entry informationi

<p>This subsection of the 'Entry information' section provides a mnemonic identifier for a UniProtKB entry, but it is not a stable identifier. Each reviewed entry is assigned a unique entry name upon integration into UniProtKB/Swiss-Prot.<p><a href='/help/entry_name' target='_top'>More...</a></p>Entry nameiCDK9_MOUSE
<p>This subsection of the 'Entry information' section provides one or more accession number(s). These are stable identifiers and should be used to cite UniProtKB entries. Upon integration into UniProtKB, each entry is assigned a unique accession number, which is called 'Primary (citable) accession number'.<p><a href='/help/accession_numbers' target='_top'>More...</a></p>AccessioniPrimary (citable) accession number: Q99J95
Secondary accession number(s): B0R020
, Q3U002, Q3UMY2, Q3UPT3, Q3UQI6, Q8BTN0
<p>This subsection of the 'Entry information' section shows the date of integration of the entry into UniProtKB, the date of the last sequence update and the date of the last annotation modification ('Last modified'). The version number for both the entry and the <a href="http://www.uniprot.org/help/canonical%5Fand%5Fisoforms">canonical sequence</a> are also displayed.<p><a href='/help/entry_history' target='_top'>More...</a></p>Entry historyiIntegrated into UniProtKB/Swiss-Prot: February 1, 2005
Last sequence update: June 1, 2001
Last modified: June 2, 2021
This is version 173 of the entry and version 1 of the sequence. See complete history.
<p>This subsection of the 'Entry information' section indicates whether the entry has been manually annotated and reviewed by UniProtKB curators or not, in other words, if the entry belongs to the Swiss-Prot section of UniProtKB (<strong>reviewed</strong>) or to the computer-annotated TrEMBL section (<strong>unreviewed</strong>).<p><a href='/help/entry_status' target='_top'>More...</a></p>Entry statusiReviewed (UniProtKB/Swiss-Prot)
Annotation programChordata Protein Annotation Program

<p>This section contains any relevant information that doesn't fit in any other defined sections<p><a href='/help/miscellaneous_section' target='_top'>More...</a></p>Miscellaneousi

Keywords - Technical termi

Reference proteome

Documents

  1. Human and mouse protein kinases
    Human and mouse protein kinases: classification and index
  2. MGD cross-references
    Mouse Genome Database (MGD) cross-references in UniProtKB/Swiss-Prot
  3. SIMILARITY comments
    Index of protein domains and families
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