Gene description for KRT7
Gene name keratin 7, type II
Gene symbol KRT7
Other names/aliases CK7
K2C7
K7
SCL
Species Homo sapiens
 Database cross references - KRT7
ExoCarta ExoCarta_3855
Vesiclepedia VP_3855
Entrez Gene 3855
HGNC 6445
MIM 148059
UniProt P08729  
 KRT7 identified in sEVs derived from the following tissue/cell type
Bladder cancer cells 20224111    
Colorectal cancer cells 19837982    
Colorectal cancer cells 23161513    
Colorectal cancer cells 23161513    
Colorectal cancer cells 23161513    
Gastric cancer cells 33991177    
Gastric cancer cells 33991177    
Gastric cancer cells 33991177    
Mesenchymal stem cells Unpublished / Not applicable
Neuroblastoma cells 25944692    
Ovarian cancer cells 23333927    
Ovarian cancer cells 23333927    
Prostate cancer cells 25844599    
Prostate cancer cells 25844599    
Retinal pigment epithelial cells 35333565    
Retinal pigment epithelial cells 35333565    
 Gene ontology annotations for KRT7
Molecular Function
    protein binding GO:0005515 IPI
    structural constituent of skin epidermis GO:0030280 IBA
Biological Process
    keratinization GO:0031424 IBA
    intermediate filament organization GO:0045109 IBA
Subcellular Localization
    nucleus GO:0005634 HDA
    cytoplasm GO:0005737 IDA
    cytosol GO:0005829 IDA
    cytosol GO:0005829 TAS
    intermediate filament GO:0005882 NAS
    keratin filament GO:0045095 IBA
    intermediate filament cytoskeleton GO:0045111 IDA
    extracellular exosome GO:0070062 HDA
 Experiment description of studies that identified KRT7 in sEVs
1
Experiment ID 76
MISEV standards
✔ Biophysical techniques
✔ Enriched markers
✔ Negative markers
✘ Particle analysis
Identified molecule protein
Identification method Mass spectrometry
PubMed ID 20224111    
Organism Homo sapiens
Experiment description Proteomics analysis of bladder cancer exosomes.
Authors "Welton JL, Khanna S, Giles PJ, Brennan P, Brewis IA, Staffurth J, Mason MD, Clayton A."
Journal name MCP
Publication year 2010
Sample Bladder cancer cells
Sample name HT1376
Isolation/purification methods Differential centrifugation
Sucrose density gradient
Flotation density 1.10-1.19 g/mL
Molecules identified in the study Protein
Methods used in the study Mass spectrometry [MALDI TOF/TOF]
Western blotting
FACS
2
Experiment ID 21
MISEV standards
✔ Biophysical techniques
✔ Enriched markers
✘ Negative markers
✘ Particle analysis
Identified molecule protein
Identification method
Mass spectrometry   
PubMed ID 19837982    
Organism Homo sapiens
Experiment description Proteomic and bioinformatic analysis of immunoaffinity-purified exosomes derived from the human colon tumor cell line LIM1215.
Authors "Suresh Mathivanan, Justin W.E. Lim, Bow J. Tauro, Hong Ji, Robert L. Moritz and Richard J. Simpson"
Journal name MCP
Publication year 2009
Sample Colorectal cancer cells
Sample name LIM1215
Isolation/purification methods Filtration
Ultracentrifugation
Sucrose density gradient
Flotation density 1.10-1.12 g/mL
Molecules identified in the study Protein
Methods used in the study Mass spectrometry [Orbitrap]
Western blotting
3
Experiment ID 207
MISEV standards
✔ Biophysical techniques
✔ Enriched markers
✔ Negative markers
✔ Particle analysis
Identified molecule protein
Identification method Mass spectrometry
PubMed ID 23161513    
Organism Homo sapiens
Experiment description Proteomic analysis of exosomes from mutant KRAS colon cancer cells identifies intercellular transfer of mutant KRAS.
Authors "Demory Beckler M, Higginbotham JN, Franklin JL, Ham AJ, Halvey PJ, Imasuen IE, Whitwell C, Li M, Liebler DC, Coffey RJ."
Journal name Mol Cell Proteomics
Publication year 2012
Sample Colorectal cancer cells
Sample name DKO-1
Isolation/purification methods Differential centrifugation
Filtration
Flotation density -
Molecules identified in the study Protein
Methods used in the study Mass spectrometry
4
Experiment ID 208
MISEV standards
✔ Biophysical techniques
✔ Enriched markers
✔ Negative markers
✔ Particle analysis
Identified molecule protein
Identification method Mass spectrometry
PubMed ID 23161513    
Organism Homo sapiens
Experiment description Proteomic analysis of exosomes from mutant KRAS colon cancer cells identifies intercellular transfer of mutant KRAS.
Authors "Demory Beckler M, Higginbotham JN, Franklin JL, Ham AJ, Halvey PJ, Imasuen IE, Whitwell C, Li M, Liebler DC, Coffey RJ."
Journal name Mol Cell Proteomics
Publication year 2012
Sample Colorectal cancer cells
Sample name Dks-8
Isolation/purification methods Differential centrifugation
Filtration
Flotation density -
Molecules identified in the study Protein
Methods used in the study Mass spectrometry
5
Experiment ID 209
MISEV standards
✘ Biophysical techniques
✔ Enriched markers
✔ Negative markers
✔ Particle analysis
Identified molecule protein
Identification method Mass spectrometry
PubMed ID 23161513    
Organism Homo sapiens
Experiment description Proteomic analysis of exosomes from mutant KRAS colon cancer cells identifies intercellular transfer of mutant KRAS.
Authors "Demory Beckler M, Higginbotham JN, Franklin JL, Ham AJ, Halvey PJ, Imasuen IE, Whitwell C, Li M, Liebler DC, Coffey RJ."
Journal name Mol Cell Proteomics
Publication year 2012
Sample Colorectal cancer cells
Sample name DLD-1
Isolation/purification methods Differential centrifugation
Filtration
Flotation density -
Molecules identified in the study Protein
Methods used in the study Mass spectrometry
6
Experiment ID 363
MISEV standards
✘ Biophysical techniques
✔ Enriched markers
✔ Negative markers
✔ Particle analysis
Identified molecule Protein
Identification method Mass spectrometry
PubMed ID 33991177    
Organism Homo sapiens
Experiment description Cancer stem cell marker DCLK1 reprograms small extracellular vesicles toward migratory phenotype in gastric cancer cells
Authors "Carli ALE, Afshar-Sterle S, Rai A, Fang H, O'Keefe R, Tse J, Ferguson FM, Gray NS, Ernst M, Greening DW, Buchert M."
Journal name Proteomics
Publication year 2021
Sample Gastric cancer cells
Sample name MKN1 - 100K pellet
Isolation/purification methods Differential centrifugation
Ultracentrifugation
Flotation density -
Molecules identified in the study Protein
Methods used in the study Western blotting
Mass spectrometry
7
Experiment ID 364
MISEV standards
✘ Biophysical techniques
✔ Enriched markers
✔ Negative markers
✔ Particle analysis
Identified molecule Protein
Identification method Mass spectrometry
PubMed ID 33991177    
Organism Homo sapiens
Experiment description Cancer stem cell marker DCLK1 reprograms small extracellular vesicles toward migratory phenotype in gastric cancer cells
Authors "Carli ALE, Afshar-Sterle S, Rai A, Fang H, O'Keefe R, Tse J, Ferguson FM, Gray NS, Ernst M, Greening DW, Buchert M."
Journal name Proteomics
Publication year 2021
Sample Gastric cancer cells
Sample name MKN1 - 100K pellet
Isolation/purification methods Differential centrifugation
Ultracentrifugation
Flotation density -
Molecules identified in the study Protein
Methods used in the study Western blotting
Mass spectrometry
8
Experiment ID 365
MISEV standards
✘ Biophysical techniques
✔ Enriched markers
✔ Negative markers
✔ Particle analysis
Identified molecule Protein
Identification method Mass spectrometry
PubMed ID 33991177    
Organism Homo sapiens
Experiment description Cancer stem cell marker DCLK1 reprograms small extracellular vesicles toward migratory phenotype in gastric cancer cells
Authors "Carli ALE, Afshar-Sterle S, Rai A, Fang H, O'Keefe R, Tse J, Ferguson FM, Gray NS, Ernst M, Greening DW, Buchert M."
Journal name Proteomics
Publication year 2021
Sample Gastric cancer cells
Sample name MKN1 - 100K pellet
Isolation/purification methods Differential centrifugation
Ultracentrifugation
Flotation density -
Molecules identified in the study Protein
Methods used in the study Western blotting
Mass spectrometry
9
Experiment ID 126
MISEV standards
✘ Biophysical techniques
✔ Enriched markers
✘ Negative markers
✘ Particle analysis
Identified molecule protein
Identification method Mass spectrometry [LTQ-FT Ultra]
PubMed ID Unpublished / Not applicable
Organism Homo sapiens
Experiment description Mesenchymal Stem Cell Exosomes: The Future MSC-based Therapy?
Authors "Ruenn Chai Lai, Ronne Wee Yeh Yeo, Soon Sim Tan, Bin Zhang, Yijun Yin, Newman Siu Kwan Sze, Andre Choo, and Sai Kiang Lim"
Journal name Mesenchymal Stem Cell Therapy
Publication year 2011
Sample Mesenchymal stem cells
Sample name huES9.E1
Isolation/purification methods HPLC
Flotation density -
Molecules identified in the study Protein
Methods used in the study Western blotting
Antobody array
Mass spectrometry
10
Experiment ID 224
MISEV standards
✔ Biophysical techniques
✔ Enriched markers
✔ Negative markers
✘ 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
11
Experiment ID 211
MISEV standards
✔ Biophysical techniques
✔ Enriched markers
✔ Negative markers
✘ Particle analysis
Identified molecule protein
Identification method Mass spectrometry
PubMed ID 23333927    
Organism Homo sapiens
Experiment description Characterization and proteomic analysis of ovarian cancer-derived exosomes.
Authors "Liang B, Peng P, Chen S, Li L, Zhang M, Cao D, Yang J, Li H, Gui T, Li X, Shen K."
Journal name J Proteomics
Publication year 2013
Sample Ovarian cancer cells
Sample name IGROV1
Isolation/purification methods Differential centrifugation
Ultracentrifugation
Sucrose density gradient
Flotation density 1.09-1.15 g/mL
Molecules identified in the study Protein
Methods used in the study Mass spectrometry
12
Experiment ID 212
MISEV standards
✔ Biophysical techniques
✔ Enriched markers
✔ Negative markers
✘ Particle analysis
Identified molecule protein
Identification method Mass spectrometry
PubMed ID 23333927    
Organism Homo sapiens
Experiment description Characterization and proteomic analysis of ovarian cancer-derived exosomes.
Authors "Liang B, Peng P, Chen S, Li L, Zhang M, Cao D, Yang J, Li H, Gui T, Li X, Shen K."
Journal name J Proteomics
Publication year 2013
Sample Ovarian cancer cells
Sample name OVCAR-3
Isolation/purification methods Differential centrifugation
Ultracentrifugation
Sucrose density gradient
Flotation density 1.09-1.15 g/mL
Molecules identified in the study Protein
Methods used in the study Mass spectrometry
13
Experiment ID 275
MISEV standards
✔ Biophysical techniques
✔ Enriched markers
✔ Negative markers
✔ 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
14
Experiment ID 274
MISEV standards
✔ Biophysical techniques
✔ Enriched markers
✔ Negative markers
✔ 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 resistant
Isolation/purification methods Filtration
Ultracentrifugation
Sucrose density gradient
Flotation density 1.13-1.18 g/mL
Molecules identified in the study Protein
Methods used in the study Mass spectrometry
Flow cytometry
Western blotting
15
Experiment ID 834
MISEV standards
✔ Biophysical techniques
✔ Enriched markers
✔ Negative markers
✔ Particle analysis
Identified molecule Protein
Identification method Mass spectrometry
PubMed ID 35333565    
Organism Homo sapiens
Experiment description LAMP2A regulates the loading of proteins into exosomes
Authors "Ferreira JV, da Rosa Soares A, Ramalho J, Máximo Carvalho C, Cardoso MH, Pintado P, Carvalho AS, Beck HC, Matthiesen R, Zuzarte M, Girão H, van Niel G, Pereira P"
Journal name Sci Adv
Publication year 2022
Sample Retinal pigment epithelial cells
Sample name ARPE-19
Isolation/purification methods Differential centrifugation
Filtration
Ultracentrifugation
Flotation density -
Molecules identified in the study Protein
Methods used in the study Western blotting
Mass spectrometry
16
Experiment ID 835
MISEV standards
✔ Biophysical techniques
✔ Enriched markers
✔ Negative markers
✔ Particle analysis
Identified molecule Protein
Identification method Mass spectrometry
PubMed ID 35333565    
Organism Homo sapiens
Experiment description LAMP2A regulates the loading of proteins into exosomes
Authors "Ferreira JV, da Rosa Soares A, Ramalho J, Máximo Carvalho C, Cardoso MH, Pintado P, Carvalho AS, Beck HC, Matthiesen R, Zuzarte M, Girão H, van Niel G, Pereira P"
Journal name Sci Adv
Publication year 2022
Sample Retinal pigment epithelial cells
Sample name ARPE-19
Isolation/purification methods Differential centrifugation
Filtration
Ultracentrifugation
Flotation density -
Molecules identified in the study Protein
Methods used in the study Western blotting
Mass spectrometry
 Protein-protein interactions for KRT7
  Protein Interactor ExoCarta ID Identification method PubMed Species
1 AP3S1 1176
Co-fractionation Homo sapiens
2 UBE2H 7328
Affinity Capture-MS Homo sapiens
3 GOLGA4  
Affinity Capture-MS Homo sapiens
4 NES 10763
Affinity Capture-MS Homo sapiens
5 KRT84 3890
Cross-Linking-MS (XL-MS) Homo sapiens
6 PHLPP1  
Proximity Label-MS Homo sapiens
7 KRT72 140807
Cross-Linking-MS (XL-MS) Homo sapiens
8 KRT76 51350
Cross-Linking-MS (XL-MS) Homo sapiens
9 DIDO1  
Co-fractionation Homo sapiens
10 KRT6B 3854
Cross-Linking-MS (XL-MS) Homo sapiens
11 KRT1 3848
Cross-Linking-MS (XL-MS) Homo sapiens
12 GRB2 2885
Affinity Capture-MS Homo sapiens
13 METTL14  
Affinity Capture-MS Homo sapiens
14 HMGB1 3146
Two-hybrid Homo sapiens
15 RNF135  
Affinity Capture-MS Homo sapiens
16 ACOT9 23597
Affinity Capture-MS Homo sapiens
17 KRT6A 3853
Cross-Linking-MS (XL-MS) Homo sapiens
18 KRT17 3872
Cross-Linking-MS (XL-MS) Homo sapiens
19 KRT12 3859
Cross-Linking-MS (XL-MS) Homo sapiens
20 ATF2  
Affinity Capture-MS Homo sapiens
21 EPPK1 83481
Affinity Capture-MS Homo sapiens
22 KRT5 3852
Cross-Linking-MS (XL-MS) Homo sapiens
23 UBE3A 7337
Reconstituted Complex Homo sapiens
24 KRT77 374454
Cross-Linking-MS (XL-MS) Homo sapiens
25 ERLIN2 11160
Co-fractionation Homo sapiens
26 RNF208  
Affinity Capture-MS Homo sapiens
27 KRT20 54474
Cross-Linking-MS (XL-MS) Homo sapiens
28 PCNA 5111
Affinity Capture-MS Homo sapiens
29 CEP44  
Affinity Capture-MS Homo sapiens
30 APEX1 328
Affinity Capture-RNA Homo sapiens
31 KIAA1429 25962
Affinity Capture-MS Homo sapiens
32 KRT15 3866
Cross-Linking-MS (XL-MS) Homo sapiens
33 KRT6C 286887
Cross-Linking-MS (XL-MS) Homo sapiens
34 RNF38  
Affinity Capture-MS Homo sapiens
35 KDM1A 23028
Two-hybrid Homo sapiens
36 INA 9118
Affinity Capture-MS Homo sapiens
37 SMTNL2  
Affinity Capture-MS Homo sapiens
38 ANKRD35  
Affinity Capture-MS Homo sapiens
39 NEFM 4741
Affinity Capture-MS Homo sapiens
40 BAG1 573
Affinity Capture-MS Homo sapiens
41 KRT75 9119
Cross-Linking-MS (XL-MS) Homo sapiens
42 KRT10 3858
Cross-Linking-MS (XL-MS) Homo sapiens
43 KRT14 3861
Cross-Linking-MS (XL-MS) Homo sapiens
44 CORO1A 11151
Affinity Capture-MS Homo sapiens
45 COG3 83548
Co-fractionation Homo sapiens
46 NEFL 4747
Affinity Capture-MS Homo sapiens
47 KRT2 3849
Cross-Linking-MS (XL-MS) Homo sapiens
48 KRT19 3880
Cross-Linking-MS (XL-MS) Homo sapiens
49 DDX39B 7919
Affinity Capture-MS Homo sapiens
50 COG7 91949
Co-fractionation Homo sapiens
51 KRT16 3868
Cross-Linking-MS (XL-MS) Homo sapiens
52 CYLD  
Affinity Capture-MS Homo sapiens
View the network image/svg+xml
 Pathways in which KRT7 is involved
PathwayEvidenceSource
Developmental Biology TAS Reactome
Formation of the cornified envelope TAS Reactome
Keratinization TAS Reactome





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