Gene description for CDK12
Gene name cyclin-dependent kinase 12
Gene symbol CDK12
Other names/aliases CRK7
CRKR
CRKRS
Species Homo sapiens
 Database cross references - CDK12
ExoCarta ExoCarta_51755
Entrez Gene 51755
HGNC 24224
MIM 615514
UniProt Q9NYV4  
 CDK12 identified in exosomes derived from the following tissue/cell type
Neuroblastoma cells 25944692    
Squamous carcinoma cells 20124223    
 Gene ontology annotations for CDK12
Molecular Function
    cyclin-dependent protein serine/threonine kinase activity GO:0004693 IEA
    ATP binding GO:0005524 IEA
    protein kinase activity GO:0004672 IDA
    RNA polymerase II carboxy-terminal domain kinase activity GO:0008353 IMP
    cyclin binding GO:0030332 IPI
    protein binding GO:0005515 IPI
Biological Process
    RNA splicing GO:0008380 ISS
    mRNA processing GO:0006397 IEA
    regulation of cell cycle GO:0051726 IEA
    phosphorylation of RNA polymerase II C-terminal domain GO:0070816 IMP
    regulation of MAP kinase activity GO:0043405 IMP
    protein autophosphorylation GO:0046777 IDA
Subcellular Localization
    cyclin K-CDK12 complex GO:0002944 IPI
    nuclear speck GO:0016607 IDA
    nucleus GO:0005634 IDA
    nucleoplasm GO:0005654 IDA
    nuclear cyclin-dependent protein kinase holoenzyme complex GO:0019908 ISS
    nucleolus GO:0005730 IDA
 Experiment description of studies that identified CDK12 in exosomes
1
Experiment ID 224
ISEV standards
EM|AFM
EV Biophysical techniques
Alix|TSG101
EV Cytosolic markers
CD63|CD81
EV Membrane markers
GOLGA2
EV Negative markers
EV Particle analysis
Identified molecule protein
Identification method Mass spectrometry
PubMed ID 25944692    
Organism Homo sapiens
Experiment description Proteogenomic analysis reveals exosomes are more oncogenic than ectosomes
Authors Keerthikumar S, Gangoda L, Liem M, Fonseka P, Atukorala I, Ozcitti C, Mechler A, Adda CG, Ang CS, Mathivanan S
Journal name Oncotarget
Publication year 2015
Sample Neuroblastoma cells
Sample name SH-SY5Y
Isolation/purification methods Differential centrifugation
Ultracentrifugation
OptiPrep density gradient
Flotation density 1.10 g/mL
Molecules identified in the study Protein
Methods used in the study Mass spectrometry
Western blotting
2
Experiment ID 191
ISEV standards
EV Biophysical techniques
Alix
EV Cytosolic markers
CD81|CD9
EV Membrane markers
EV Negative markers
EV Particle analysis
Identified molecule protein
Identification method Mass spectrometry
PubMed ID 20124223    
Organism Homo sapiens
Experiment description Hypoxic tumor cell modulates its microenvironment to enhance angiogenic and metastatic potential by secretion of proteins and exosomes.
Authors Park JE, Tan HS, Datta A, Lai RC, Zhang H, Meng W, Lim SK, Sze SK.
Journal name Mol Cell Proteomics
Publication year 2010
Sample Squamous carcinoma cells
Sample name Squamous carcinoma cell (A431)
Isolation/purification methods Differential centrifugation
Flotation density -
Molecules identified in the study Protein
Methods used in the study Mass spectrometry
 Protein-protein interactions for CDK12
  Protein Interactor ExoCarta ID Identification method PubMed Species
No interactions are found.
 Pathways in which CDK12 is involved
No pathways found





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