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Symbol CDK1 contributors: mct/ - updated : 27-12-2011
HGNC name cyclin-dependent kinase 1
HGNC id 1722
Location 10q21.2      Physical location : 62.538.088 - 62.554.604
Synonym name
  • cell division cycle 2, G1 to S and G2 to M
  • p34 protein kinase
  • cell cycle controller CDC2
  • cell division control protein 2 homolog
  • cell division protein kinase 1
  • Synonym symbol(s) CDC2, p34, CDC28A, DKFZp686L20222, MGC111195, P34CDC2
    EC.number 2.7.1. 22,
    TYPE functioning gene
    STRUCTURE 16.39 kb     8 Exon(s)
    MAPPING cloned Y linked Y status confirmed
    Map cen - D10S589 - D10S1794 - CDK1 - D10S1640 - D10S609 - qter
    Authors CEPH (92)
    TRANSCRIPTS type messenger
    identificationnb exonstypebpproduct
    ProteinkDaAAspecific expressionYearPubmed
    8 - 1923 34.1 297 - - 3553962
    full length
    6 splicing 1752 27.5 240 breast cancer tissues - 3553962
  • also called variant 2/isoform 2 or CDC2 delta T
  • lacking an internal coding region compared to variant 1
  • the resulting protein lacks the T loop of the kinase domain and, thereby, lacks the kinase activity
  • being unable to complex with cyclin B1 and also failing to bind to the CDK inhibitor p21
  • - - 1742 - 109 - - 3553962
    also called variant 5/isoform 4
    - - 1754 - 109 - - 3553962
    also called variant 4/isoform 4
    Type ubiquitous
       expressed in (based on citations)
    SystemOrgan level 1Organ level 2Organ level 3Organ level 4LevelPubmedSpeciesStageRna symbol
    Digestiveesophagus   highly
     salivary gland   highly
    Endocrineadrenal gland   highly
    Lymphoid/Immunelymph node   predominantly
    Reproductivefemale systemuterus  moderately
     female systembreastmammary gland highly
    Urinarybladder   highly
    SystemTissueTissue level 1Tissue level 2LevelPubmedSpeciesStageRna symbol
    Blood / hematopoieticbone marrow   
    cell lineage
    cell lines
    at STAGE
    physiological period embryo
    cell cycle     cell cycle, checkpoint, G1S, G2M
    Text umbilical cord and embryonic tissue
  • serine/threonine kinase p34/cdc2 with the PSTAIRE motif
  • an ATP binding site
    interspecies ortholog to Cdk1, Rattus norvegicus
    ortholog to CDK1, Mus musculus
    ortholog to cdk&, Danio rerio
    ortholog to CDK1, Pan troglodytes
  • protein kinase superfamily
  • CMGC Ser/Thr protein kinase family
  • CDC2/CDKX subfamily
  • CATEGORY enzyme , regulatory
    SUBCELLULAR LOCALIZATION     intracellular
    intracellular,cytoplasm,cytoskeleton,microtubule,mitotic spindle
    text continually shuttling between the nucleus and cytoplasm
    basic FUNCTION
  • directly regulates microtubule dynamics at mitosis through phosphorylation of MAP4 (
  • cdc2-mediated phosphorylation is an important regulator of nestin organization and dynamics during mitosis (
  • acting as an histone 1-kinase (H1K)
  • involved in cell cycle regulation (G1 to S and G2 to M transition)
  • phosphorylating JUNB and lowering its level in mitotic and early G1 cells
  • putative upregulated c-Myc target gene
  • G2 phase CCNA1/CDK2 controls the timing of entry into mitosis by controlling the subsequent activation of CCNB/CDK1, but also has an unexpected role in coordinating the activation of CCNB/CDK1 at the centrosome and in the nucleus
  • is the only essential cell cycle CDK (in the absence of interphase Cdks, CDC2 can execute all the events that are required to drive cell division)
  • can activate CDC25C
  • phosphorylates ELAVL1 during G2, thereby helping to retain it in the nucleus in association with 14-3-3 and hindering its post-transcriptional function and anti-apoptotic influence
  • essential for DNA replication downstream formation of replication initiation complexes in hepatocytes but not in fibroblasts
  • involved in CDK1 and CDK2-mediated phosphorylation, a key mechanism governing EZH2 function
  • promote interphase nuclear pore complexes formation in human dividing cells
  • with AURKA and PLK1, participate in a feedback activation loop and activation of CDK1 initiates the feedback loop activity, leading to rapid and timely entry into mitosis
  • implicated in phosphorylation of CHEK1 which participates in cytoplasmic sequestration of CHEK1 activity
  • CDK1, CDK2, CDK5, can phosphorylate human DNMT1 at Ser154, suggesting an important role for CDKs in controlling DNA methylation patterns in mammalian cells
  • robust timing and ordering of cell cycle events depend on gradual changes in the substrate specificity of CDK1
  • CDK1 and AURKB cooperatively modulate microtubule dynamics and AURKB-dependent phosphorylation of INCENP controls spindle function by excluding the CPC from spindle regions engaged in microtubule polymerization
  • permits resection by phosphorylation of RBBP8 but also prevents RAD51 binding to the resected ends during M-phase double-strand break repair
  • is a critical regulator of DSB repair in M phase
  • archetypical kinase and a central regulator that drives cells through G2 phase and mitosis
  • essential for cell proliferation and tumorigenesis, it is not required for DNA replication and liver regeneration
  • is redundant for S phase progression, but its loss results in endoreduplication
  • CELLULAR PROCESS cell cycle, division, mitosis
    cell cycle, checkpoint
    a component
  • component with cyclin A and B1 of the M phase promoting factor (MPF)
  • being a component of the kinase complex that phosphorylates the repetitive C-terminus of RNA polymerase II
  • CDK1/CCNB1 activity shields cells against extrinsic death stimuli and unravel the molecular details of the crosstalk between cell cycle and extrinsic apoptotic pathways
    small molecule nucleotide,
  • ATP
  • protein
  • proliferating cell nuclear antigen, PCNA (
  • kinase associated phosphatase, KAP (
  • cyclin A1 (
  • protein-tyrosine kinase Lck (
  • cyclin B (
  • Fanconi anemia polypeptide, FAC (
  • indirectly interact with TGFbeta RII via cyclin B2 (
  • LATS, large tumor suppressor, homolog 1 (Drosophila), LATS1 (
  • Cyclin B1 (
  • promyelocytic leukemia zinc finger, PLZF (
  • Myt1 (
  • survivin (
  • p53 (
  • Hamartin and tuberin (
  • FEZ1/LZTS1 (
  • CCAAT displacement protein (CDP)/Cux transcription factor (
  • response gene to complement 32 protein, RGC32 (
  • Gadd45b and Gadd45g (
  • WARTS protein kinase (
  • Disabled-2, Dab2 (
  • separase (
  • inactivation of EEF2K by CDK1 may serve to keep EEF2 active during mitosis (where calcium levels rise) and thereby permit protein synthesis to proceed in mitotic cells
  • CDK1 bind to RALBP1 during mitosis, such that endocytosis is inhibited (increased expression of CDK1 inhibits transport function of RALBP1 and promotes apoptosis)
  • different levels of CCNB1-CDK1 kinase activity trigger different mitotic events, thus revealing how the remarkable reorganization of the cell is coordinated at mitotic entry
  • KMT2E is a novel cellular target of CDK1, and the phosphorylation of KMT2E may have an indispensable role in the mitotic progression
  • combined action of CDK1, NEK6, NEK7, and likely other kinases contributes to hyperphosphorylation of NUP98 during mitosis (
  • CEP63 binds to and recruits CDK1 to centrosomes, and thereby regulates mitotic entry (
  • positive feedback in Cdk1 activation serves to overcome the activity of Cdk-opposing phosphatases and thus sustains forward progression in mitosis (
  • CDK1/CCNB1-dependent hyper-phosphorylation of BCL2L11 during prolonged mitotic arrest is an important cell death signal
  • as cells progress through S phase, CCNA2 initially forms complexes with CDK2, and, later, most CCNA2 molecules are bound to CDK1
  • CDK1 and POU5F1 interplay to inhibit ES cell differentiation into trophectoderm and thereby maintain stemness
  • UCHL1 physically interacts with CDK1, CDK4, and CDK5, enhancing their kinase activity
  • CDKN3 dephosphorylates threonine-161 of CDK1 during mitotic exit
  • PIN1 interacts with SEPT9 upon mitotic phosphorylation at Thr-24 by CDK1
  • cell & other
    activated by
  • phosphorylation of the threonine T161
  • inhibited by
  • through phosphorylation on Y15 by WEE1, phosphorylation of Y15 has a key role in radiation-induced G2 delay
  • phosphorylation of tyrosine Y15 and threonine T14 by CDK7
  • onset of the anaphase
  • Phosphorylated by
  • increasig of WEE1 and PKMYT1 and the reduction of CDK1 and CCNB1 are involved in 1,25[OH]2VD3-induced G2/M arrest of keratinocyte (
  • casein kinase II, CKII (
  • myelin transcription factor 1, MYT1 (
  • MYT1 and WEE1, that can phosphorylate CDK1
  • maintained in an inactive state by phosphorylation of WEE1 and MYT1
    corresponding disease(s)
    Other morbid association(s)
    TypeGene ModificationChromosome rearrangementProtein expressionProtein Function
    constitutional       loss of function
    cells lacking CDK1 cannot proliferate but instead enter a senescent state and survive in culture medium
    Variant & Polymorphism
    Candidate gene
    Therapy target
    potential of CDK1 inhibitors in cancer therapy