Gene description for KCNN4
Gene name potassium channel, calcium activated intermediate/small conductance subfamily N alpha, member 4
Gene symbol KCNN4
Other names/aliases IK
IK1
IKCA1
KCA4
KCa3.1
SK4
hIKCa1
hKCa4
hSK4
Species Homo sapiens
 Database cross references - KCNN4
ExoCarta ExoCarta_3783
Vesiclepedia VP_3783
Entrez Gene 3783
HGNC 6293
MIM 602754
UniProt O15554  
 KCNN4 identified in exosomes derived from the following tissue/cell type
Melanoma cells 25950383    
Melanoma cells 25950383    
Prostate cancer cells 25844599    
 Gene ontology annotations for KCNN4
Molecular Function
    potassium channel activity GO:0005267 TAS
    protein binding GO:0005515 IPI
    calmodulin binding GO:0005516 IBA
    calmodulin binding GO:0005516 IDA
    calcium-activated potassium channel activity GO:0015269 IDA
    small conductance calcium-activated potassium channel activity GO:0016286 IEA
    protein phosphatase binding GO:0019903 IPI
    intermediate conductance calcium-activated potassium channel activity GO:0022894 IBA
    intermediate conductance calcium-activated potassium channel activity GO:0022894 IDA
    protein homodimerization activity GO:0042803 IDA
Biological Process
    immune system process GO:0002376 IEA
    potassium ion transport GO:0006813 TAS
    calcium ion transport GO:0006816 IDA
    cell volume homeostasis GO:0006884 IEA
    defense response GO:0006952 TAS
    stabilization of membrane potential GO:0030322 IDA
    macropinocytosis GO:0044351 IDA
    phospholipid translocation GO:0045332 IEA
    saliva secretion GO:0046541 IEA
    positive regulation of protein secretion GO:0050714 IEA
    positive regulation of T cell receptor signaling pathway GO:0050862 IDA
    protein homotetramerization GO:0051289 IDA
    establishment of localization in cell GO:0051649 IEA
    potassium ion transmembrane transport GO:0071805 IBA
    potassium ion transmembrane transport GO:0071805 IDA
    positive regulation of potassium ion transmembrane transport GO:1901381 TAS
    regulation of calcium ion import across plasma membrane GO:1905664 IDA
Subcellular Localization
    cytosol GO:0005829 IDA
    plasma membrane GO:0005886 IBA
    plasma membrane GO:0005886 IDA
    plasma membrane GO:0005886 TAS
    voltage-gated potassium channel complex GO:0008076 IC
    vesicle GO:0031982 IDA
    ruffle membrane GO:0032587 IDA
    neuron projection GO:0043005 IBA
    neuronal cell body GO:0043025 IBA
 Experiment description of studies that identified KCNN4 in exosomes
1
Experiment ID 259
MISEV standards
EM
Biophysical techniques
TSG101|FLOT1
Enriched markers
Negative markers
NTA
Particle analysis
Identified molecule protein
Identification method Mass spectrometry
PubMed ID 25950383    
Organism Homo sapiens
Experiment description Proteome characterization of melanoma exosomes reveals a specific signature for metastatic cell lines
Authors "Lazar I, Clement E, Ducoux-Petit M, Denat L, Soldan V, Dauvillier S, Balor S4, Burlet-Schiltz O1, Larue L, Muller C Nieto L"
Journal name Pigment Cell Melanoma Res
Publication year 2015
Sample Melanoma cells
Sample name A375M
Isolation/purification methods Differential centrifugation
Unltracentrifugation
Sucrose density gradient
Flotation density 1.13 - 1.19 g/mL
Molecules identified in the study Protein
Methods used in the study Western blotting
Mass spectrometry
2
Experiment ID 260
MISEV standards
EM
Biophysical techniques
TSG101|FLOT1|CD81
Enriched markers
Negative markers
NTA
Particle analysis
Identified molecule protein
Identification method Mass spectrometry
PubMed ID 25950383    
Organism Homo sapiens
Experiment description Proteome characterization of melanoma exosomes reveals a specific signature for metastatic cell lines
Authors "Lazar I, Clement E, Ducoux-Petit M, Denat L, Soldan V, Dauvillier S, Balor S4, Burlet-Schiltz O1, Larue L, Muller C Nieto L"
Journal name Pigment Cell Melanoma Res
Publication year 2015
Sample Melanoma cells
Sample name 1205Lu
Isolation/purification methods Differential centrifugation
Unltracentrifugation
Sucrose density gradient
Flotation density 1.13 - 1.19 g/mL
Molecules identified in the study Protein
Methods used in the study Western blotting
Mass spectrometry
3
Experiment ID 275
MISEV standards
EM
Biophysical techniques
TSG101|Alix|RAB5A|CD9|CD82|CD63|CD81
Enriched markers
AIF
Negative markers
NTA
Particle analysis
Identified molecule protein
Identification method Mass spectrometry
PubMed ID 25844599    
Organism Homo sapiens
Experiment description Molecular profiling of prostate cancer derived exosomes may reveal a predictive signature for response to docetaxel.
Authors "Kharaziha P, Chioureas D, Rutishauser D, Baltatzis G, Lennartsson L, Fonseca P, Azimi A, Hultenby K, Zubarev R, Ullen A, Yachnin J, Nilsson S, Panaretakis T."
Journal name Oncotarget
Publication year 2015
Sample Prostate cancer cells
Sample name DU145 - Docetaxel sensitive
Isolation/purification methods Filtration
Ultracentrifugation
Sucrose density gradient
Flotation density 1.12-1.19 g/mL
Molecules identified in the study Protein
Methods used in the study Mass spectrometry/Flow cytometry/Western blotting
 Protein-protein interactions for KCNN4
  Protein Interactor ExoCarta ID Identification method PubMed Species
1 P3H1 64175
Affinity Capture-MS Homo sapiens
2 HNRNPH1 3187
Affinity Capture-RNA Homo sapiens
3 SGCA  
Affinity Capture-MS Homo sapiens
4 MCAM 4162
Proximity Label-MS Homo sapiens
5 LGALS9 3965
Affinity Capture-MS Homo sapiens
6 USE1 55850
Affinity Capture-MS Homo sapiens
7 TMEM9 252839
Affinity Capture-MS Homo sapiens
8 BLOC1S6  
Affinity Capture-MS Homo sapiens
9 CXCR4 7852
Affinity Capture-MS Homo sapiens
10 RAB7A 7879
Affinity Capture-Western Homo sapiens
11 GP9 2815
Affinity Capture-MS Homo sapiens
12 JPH3 57338
FRET Homo sapiens
13 SLC39A4 55630
Affinity Capture-MS Homo sapiens
14 SLC30A2  
Two-hybrid Homo sapiens
15 PEX19 5824
Affinity Capture-MS Homo sapiens
16 TNFSF8  
Affinity Capture-MS Homo sapiens
17 LRRC25  
Affinity Capture-MS Homo sapiens
18 RYR2 6262
FRET Homo sapiens
19 Calml3  
Affinity Capture-MS Mus musculus
20 LGALS3 3958
Affinity Capture-MS Homo sapiens
21 OPALIN  
Affinity Capture-MS Homo sapiens
22 TSG101 7251
Affinity Capture-Western Homo sapiens
23 TSPAN17 26262
Affinity Capture-MS Homo sapiens
24 LGALS1 3956
Affinity Capture-MS Homo sapiens
25 TYROBP  
Affinity Capture-MS Homo sapiens
26 B4GAT1 11041
Affinity Capture-MS Homo sapiens
27 CALM1 801
Two-hybrid Homo sapiens
Reconstituted Complex Homo sapiens
Co-purification Homo sapiens
28 JPH4 84502
FRET Homo sapiens
29 DHPS 1725
Affinity Capture-MS Homo sapiens
30 FFAR1  
Affinity Capture-MS Homo sapiens
31 EIF2B5 8893
Affinity Capture-MS Homo sapiens
32 SDC2 6383
Affinity Capture-MS Homo sapiens
33 PGAM2 5224
Affinity Capture-MS Homo sapiens
34 TNNC1  
Affinity Capture-MS Homo sapiens
35 VSIG4  
Affinity Capture-MS Homo sapiens
36 AMHR2  
Affinity Capture-MS Homo sapiens
37 GPR152  
Two-hybrid Homo sapiens
38 KCNE3  
Affinity Capture-MS Homo sapiens
39 USP8 9101
Affinity Capture-Western Homo sapiens
40 PMP22  
Two-hybrid Homo sapiens
41 CDH1 999
Proximity Label-MS Homo sapiens
42 PBXIP1 57326
Affinity Capture-MS Homo sapiens
43 CREB3L3  
Affinity Capture-MS Homo sapiens
44 DCAF8L2  
Affinity Capture-MS Homo sapiens
45 ACKR2  
Affinity Capture-MS Homo sapiens
46 GPR182  
Affinity Capture-MS Homo sapiens
47 KIAA1644  
Affinity Capture-MS Homo sapiens
48 CACNA1D  
FRET Homo sapiens
49 ASPH 444
Affinity Capture-MS Homo sapiens
50 Cam  
Reconstituted Complex Drosophila melanogaster
51 TRDN 10345
Affinity Capture-MS Homo sapiens
52 CREB3  
Affinity Capture-MS Homo sapiens
53 TREML2 79865
Affinity Capture-MS Homo sapiens
54 HLA-DRB1 3123
Affinity Capture-MS Homo sapiens
55 NEUROG3  
Affinity Capture-MS Homo sapiens
56 CNIH3  
Two-hybrid Homo sapiens
57 C3orf52  
Affinity Capture-MS Homo sapiens
58 KCNE4  
Affinity Capture-MS Homo sapiens
59 CASQ2 845
Affinity Capture-MS Homo sapiens
View the network image/svg+xml
 Pathways in which KCNN4 is involved
PathwayEvidenceSource
Ca2+ activated K+ channels TAS Reactome
Neuronal System TAS Reactome
Potassium Channels TAS Reactome





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