Gene description for CTSA
Gene name cathepsin A
Gene symbol CTSA
Other names/aliases GLB2
GSL
NGBE
PPCA
PPGB
Species Homo sapiens
 Database cross references - CTSA
ExoCarta ExoCarta_5476
Vesiclepedia VP_5476
Entrez Gene 5476
HGNC 9251
MIM 613111
UniProt P10619  
 CTSA identified in sEVs derived from the following tissue/cell type
Bone marrow mesenchymal stem cells 36408942    
Bone marrow mesenchymal stem cells 36408942    
Bone marrow mesenchymal stem cells 36408942    
Bone marrow mesenchymal stem cells 36408942    
Chondrocytes 35931686    
Chondrocytes 35931686    
Chondrocytes 35931686    
Chondrocytes 35931686    
Colorectal cancer cells 34887515    
Mesenchymal stem cells 36408942    
Prostate cancer cells 25857301    
Retinal pigment epithelial cells 35333565    
Retinal pigment epithelial cells 35333565    
Urine 15326289    
Urine 19056867    
Urine 21595033    
Urine 21595033    
Urine 21595033    
 Gene ontology annotations for CTSA
Molecular Function
    carboxypeptidase activity GO:0004180 TAS
    serine-type carboxypeptidase activity GO:0004185 IBA
    serine-type carboxypeptidase activity GO:0004185 IMP
    enzyme activator activity GO:0008047 TAS
Biological Process
    proteolysis GO:0006508 IDA
    intracellular protein transport GO:0006886 TAS
    regulation of protein stability GO:0031647 IMP
    regulation of chaperone-mediated autophagy GO:1904714 TAS
    negative regulation of chaperone-mediated autophagy GO:1904715 IGI
Subcellular Localization
    extracellular region GO:0005576 TAS
    lysosome GO:0005764 NAS
    endoplasmic reticulum GO:0005783 TAS
    membrane GO:0016020 HDA
    azurophil granule lumen GO:0035578 TAS
    lysosomal lumen GO:0043202 TAS
    intracellular membrane-bounded organelle GO:0043231 IDA
    extracellular exosome GO:0070062 HDA
    lumenal side of lysosomal membrane GO:0098575 TAS
 Experiment description of studies that identified CTSA in sEVs
1
Experiment ID 489
MISEV standards
✔ Biophysical techniques
✔ Enriched markers
✔ Negative markers
✔ Particle analysis
Identified molecule Protein
Identification method Mass spectrometry
PubMed ID 36408942    
Organism Rattus norvegicus
Experiment description Quantitative proteomic analysis of exosomes from umbilical cord mesenchymal stem cells and rat bone marrow stem cells
Authors "Xu X, Yin F, Guo M, Gan G, Lin G, Wen C, Wang J, Song P, Wang J, Qi ZQ, Zhong CQ."
Journal name Proteomics
Publication year 2023
Sample Bone marrow mesenchymal stem cells
Sample name BMSC - Passage 6
Isolation/purification methods Differential centrifugation
Filtration
Ultracentrifugation
Flotation density -
Molecules identified in the study Protein
Methods used in the study Western blotting
Mass spectometry
2
Experiment ID 490
MISEV standards
✔ Biophysical techniques
✔ Enriched markers
✔ Negative markers
✔ Particle analysis
Identified molecule Protein
Identification method Mass spectrometry
PubMed ID 36408942    
Organism Rattus norvegicus
Experiment description Quantitative proteomic analysis of exosomes from umbilical cord mesenchymal stem cells and rat bone marrow stem cells
Authors "Xu X, Yin F, Guo M, Gan G, Lin G, Wen C, Wang J, Song P, Wang J, Qi ZQ, Zhong CQ."
Journal name Proteomics
Publication year 2023
Sample Bone marrow mesenchymal stem cells
Sample name BMSC - Passage 7
Isolation/purification methods Differential centrifugation
Filtration
Ultracentrifugation
Flotation density -
Molecules identified in the study Protein
Methods used in the study Western blotting
Mass spectometry
3
Experiment ID 491
MISEV standards
✔ Biophysical techniques
✔ Enriched markers
✔ Negative markers
✔ Particle analysis
Identified molecule Protein
Identification method Mass spectrometry
PubMed ID 36408942    
Organism Rattus norvegicus
Experiment description Quantitative proteomic analysis of exosomes from umbilical cord mesenchymal stem cells and rat bone marrow stem cells
Authors "Xu X, Yin F, Guo M, Gan G, Lin G, Wen C, Wang J, Song P, Wang J, Qi ZQ, Zhong CQ."
Journal name Proteomics
Publication year 2023
Sample Bone marrow mesenchymal stem cells
Sample name BMSC - Passage 8
Isolation/purification methods Differential centrifugation
Filtration
Ultracentrifugation
Flotation density -
Molecules identified in the study Protein
Methods used in the study Western blotting
Mass spectometry
4
Experiment ID 492
MISEV standards
✔ Biophysical techniques
✔ Enriched markers
✔ Negative markers
✔ Particle analysis
Identified molecule Protein
Identification method Mass spectrometry
PubMed ID 36408942    
Organism Rattus norvegicus
Experiment description Quantitative proteomic analysis of exosomes from umbilical cord mesenchymal stem cells and rat bone marrow stem cells
Authors "Xu X, Yin F, Guo M, Gan G, Lin G, Wen C, Wang J, Song P, Wang J, Qi ZQ, Zhong CQ."
Journal name Proteomics
Publication year 2023
Sample Bone marrow mesenchymal stem cells
Sample name BMSC - Passage 9
Isolation/purification methods Differential centrifugation
Filtration
Ultracentrifugation
Flotation density -
Molecules identified in the study Protein
Methods used in the study Western blotting
Mass spectometry
5
Experiment ID 494
MISEV standards
✔ Biophysical techniques
✔ Enriched markers
✘ Negative markers
✔ Particle analysis
Identified molecule Protein
Identification method Mass spectrometry
PubMed ID 35931686    
Organism Homo sapiens
Experiment description Extracellular vesicles enriched in connexin 43 promote a senescent phenotype in bone and synovial cells contributing to osteoarthritis progression
Authors "Varela-Eirín M, Carpintero-Fernández P, Guitián-Caamaño A, Varela-Vázquez A, García-Yuste A, Sánchez-Temprano A, Bravo-López SB, Yañez-Cabanas J, Fonseca E, Largo R, Mobasheri A, Caeiro JR, Mayán MD."
Journal name Cell Death Dis
Publication year 2022
Sample Chondrocytes
Sample name Osteoarthritic cartilage
Isolation/purification methods Differential centrifugation
Filtration
Ultracentrifugation
Flotation density -
Molecules identified in the study Protein
Methods used in the study Western blotting
Mass spectometry
6
Experiment ID 496
MISEV standards
✘ Biophysical techniques
✔ Enriched markers
✘ Negative markers
✘ Particle analysis
Identified molecule Protein
Identification method Mass spectrometry
PubMed ID 35931686    
Organism Homo sapiens
Experiment description Extracellular vesicles enriched in connexin 43 promote a senescent phenotype in bone and synovial cells contributing to osteoarthritis progression
Authors "Varela-Eirín M, Carpintero-Fernández P, Guitián-Caamaño A, Varela-Vázquez A, García-Yuste A, Sánchez-Temprano A, Bravo-López SB, Yañez-Cabanas J, Fonseca E, Largo R, Mobasheri A, Caeiro JR, Mayán MD."
Journal name Cell Death Dis
Publication year 2022
Sample Chondrocytes
Sample name Healthy cartilage
Isolation/purification methods Differential centrifugation
Filtration
Ultracentrifugation
Flotation density -
Molecules identified in the study Protein
Methods used in the study Western blotting
Mass spectometry
7
Experiment ID 497
MISEV standards
✘ Biophysical techniques
✔ Enriched markers
✘ Negative markers
✔ Particle analysis
Identified molecule Protein
Identification method Mass spectrometry
PubMed ID 35931686    
Organism Homo sapiens
Experiment description Extracellular vesicles enriched in connexin 43 promote a senescent phenotype in bone and synovial cells contributing to osteoarthritis progression
Authors "Varela-Eirín M, Carpintero-Fernández P, Guitián-Caamaño A, Varela-Vázquez A, García-Yuste A, Sánchez-Temprano A, Bravo-López SB, Yañez-Cabanas J, Fonseca E, Largo R, Mobasheri A, Caeiro JR, Mayán MD."
Journal name Cell Death Dis
Publication year 2022
Sample Chondrocytes
Sample name T/C-28a2
Isolation/purification methods Differential centrifugation
Filtration
Ultracentrifugation
Flotation density -
Molecules identified in the study Protein
Methods used in the study Western blotting
Mass spectometry
8
Experiment ID 498
MISEV standards
✔ Biophysical techniques
✔ Enriched markers
✘ Negative markers
✔ Particle analysis
Identified molecule Protein
Identification method Mass spectrometry
PubMed ID 35931686    
Organism Homo sapiens
Experiment description Extracellular vesicles enriched in connexin 43 promote a senescent phenotype in bone and synovial cells contributing to osteoarthritis progression
Authors "Varela-Eirín M, Carpintero-Fernández P, Guitián-Caamaño A, Varela-Vázquez A, García-Yuste A, Sánchez-Temprano A, Bravo-López SB, Yañez-Cabanas J, Fonseca E, Largo R, Mobasheri A, Caeiro JR, Mayán MD."
Journal name Cell Death Dis
Publication year 2022
Sample Chondrocytes
Sample name T/C-28a2
Isolation/purification methods Differential centrifugation
Filtration
Ultracentrifugation
Flotation density -
Molecules identified in the study Protein
Methods used in the study Western blotting
Mass spectometry
9
Experiment ID 1203
MISEV standards
✔ Biophysical techniques
✔ Enriched markers
✘ Negative markers
✘ Particle analysis
Identified molecule protein
Identification method Mass spectrometry
PubMed ID 34887515    
Organism Homo sapiens
Experiment description Supermeres are functional extracellular nanoparticles replete with disease biomarkers and therapeutic targets
Authors "Zhang Q, Jeppesen DK, Higginbotham JN, Graves-Deal R, Trinh VQ, Ramirez MA, Sohn Y, Neininger AC, Taneja N, McKinley ET, Niitsu H, Cao Z, Evans R, Glass SE, Ray KC, Fissell WH, Hill S, Rose KL, Huh WJ, Washington MK, Ayers GD, Burnette DT, Sharma S, Rome LH, Franklin JL, Lee YA, Liu Q, Coffey RJ."
Journal name Nat Cell Biol
Publication year 2021
Sample Colorectal cancer cells
Sample name DiFi
Isolation/purification methods Differential centrifugation
Filtration
Centrifugal ultrafiltration
Ultracentrifugation
OptiPrep density gradient centrifugation
Flotation density -
Molecules identified in the study Protein
miRNA
Methods used in the study Western blotting
Mass spectrometry
RNA sequencing
10
Experiment ID 488
MISEV standards
✔ Biophysical techniques
✔ Enriched markers
✔ Negative markers
✔ Particle analysis
Identified molecule Protein
Identification method Mass spectrometry
PubMed ID 36408942    
Organism Homo sapiens
Experiment description Quantitative proteomic analysis of exosomes from umbilical cord mesenchymal stem cells and rat bone marrow stem cells
Authors "Xu X, Yin F, Guo M, Gan G, Lin G, Wen C, Wang J, Song P, Wang J, Qi ZQ, Zhong CQ."
Journal name Proteomics
Publication year 2023
Sample Mesenchymal stem cells
Sample name UCMSC
Isolation/purification methods Differential centrifugation
Filtration
Ultracentrifugation
Flotation density -
Molecules identified in the study Protein
Methods used in the study Western blotting
Mass spectometry
11
Experiment ID 250
MISEV standards
✔ Biophysical techniques
✔ Enriched markers
✘ Negative markers
✘ Particle analysis
Identified molecule protein
Identification method Mass spectrometry
PubMed ID 25857301    
Organism Homo sapiens
Experiment description Large oncosomes contain distinct protein cargo and represent a separate functional class of tumor-derived extracellular vesicles.
Authors "Minciacchi VR, You S, Spinelli C, Morley S, Zandian M, Aspuria PJ, Cavallini L, Ciardiello C, Reis Sobreiro M, Morello M, Kharmate G, Jang SC, Kim DK, Hosseini-Beheshti E, Tomlinson Guns E, Gleave M, Gho YS, Mathivanan S, Yang W, Freeman MR, Di Vizio D"
Journal name Oncotarget
Publication year 2015
Sample Prostate cancer cells
Sample name DU145 - expressing DIAPH3 hRNA
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 Western blotting
Mass spectrometry
12
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
13
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
14
Experiment ID 13
MISEV standards
✔ Biophysical techniques
✔ Enriched markers
✘ Negative markers
✘ Particle analysis
Identified molecule protein
Identification method Mass spectrometry
PubMed ID 15326289    
Organism Homo sapiens
Experiment description Identification and proteomic profiling of exosomes in human urine.
Authors "Pisitkun T, Shen RF, Knepper MA"
Journal name PNAS
Publication year 2004
Sample Urine
Sample name Urine - Normal
Isolation/purification methods Ultracentrifugation
Flotation density -
Molecules identified in the study Protein
Methods used in the study Mass spectrometry [LCQ DECA XP]
Western blotting
15
Experiment ID 63
MISEV standards
✘ Biophysical techniques
✔ Enriched markers
✘ Negative markers
✘ Particle analysis
Identified molecule protein
Identification method Mass spectrometry
PubMed ID 19056867    
Organism Homo sapiens
Experiment description Large-scale proteomics and phosphoproteomics of urinary exosomes.
Authors "Gonzales PA, Pisitkun T, Hoffert JD, Tchapyjnikov D, Star RA, Kleta R, Wang NS, Knepper MA"
Journal name JASN
Publication year 2009
Sample Urine
Sample name Urine - Normal
Isolation/purification methods Differential centrifugation
Flotation density -
Molecules identified in the study Protein
Methods used in the study Mass spectrometry [LTQ]
Western blotting
16
Experiment ID 193
MISEV standards
✔ Biophysical techniques
✔ Enriched markers
✔ Negative markers
✘ Particle analysis
Identified molecule protein
Identification method Mass spectrometry
PubMed ID 21595033    
Organism Homo sapiens
Experiment description Proteomic analysis of urinary exosomes from patients of early IgA nephropathy and thin basement membrane nephropathy.
Authors "Moon PG, Lee JE, You S, Kim TK, Cho JH, Kim IS, Kwon TH, Kim CD, Park SH, Hwang D, Kim YL, Baek MC."
Journal name Proteomics
Publication year 2011
Sample Urine
Sample name Urine - Normal
Isolation/purification methods Differential centrifugation
Ultracentrifugation
Sucrose density gradient
Flotation density -
Molecules identified in the study Protein
Methods used in the study Mass spectrometry
17
Experiment ID 194
MISEV standards
✘ Biophysical techniques
✘ Enriched markers
✘ Negative markers
✘ Particle analysis
Identified molecule protein
Identification method Mass spectrometry
PubMed ID 21595033    
Organism Homo sapiens
Experiment description Proteomic analysis of urinary exosomes from patients of early IgA nephropathy and thin basement membrane nephropathy.
Authors "Moon PG, Lee JE, You S, Kim TK, Cho JH, Kim IS, Kwon TH, Kim CD, Park SH, Hwang D, Kim YL, Baek MC."
Journal name Proteomics
Publication year 2011
Sample Urine
Sample name Urine - Patients of basement membrane nephropathy
Isolation/purification methods Differential centrifugation
Ultracentrifugation
Sucrose density gradient
Flotation density -
Molecules identified in the study Protein
Methods used in the study Mass spectrometry
18
Experiment ID 195
MISEV standards
✘ Biophysical techniques
✘ Enriched markers
✘ Negative markers
✘ Particle analysis
Identified molecule protein
Identification method Mass spectrometry
PubMed ID 21595033    
Organism Homo sapiens
Experiment description Proteomic analysis of urinary exosomes from patients of early IgA nephropathy and thin basement membrane nephropathy.
Authors "Moon PG, Lee JE, You S, Kim TK, Cho JH, Kim IS, Kwon TH, Kim CD, Park SH, Hwang D, Kim YL, Baek MC."
Journal name Proteomics
Publication year 2011
Sample Urine
Sample name Urine - Patients of early IgA nephropathy
Isolation/purification methods Differential centrifugation
Ultracentrifugation
Sucrose density gradient
Flotation density -
Molecules identified in the study Protein
Methods used in the study Mass spectrometry
 Protein-protein interactions for CTSA
  Protein Interactor ExoCarta ID Identification method PubMed Species
1 BAG3 9531
Affinity Capture-MS Homo sapiens
2 ANLN 54443
Affinity Capture-MS Homo sapiens
3 MAD2L1BP  
Affinity Capture-MS Homo sapiens
4 APOA1BP 128240
Co-fractionation Homo sapiens
5 GINS2  
Co-fractionation Homo sapiens
6 KIF14 9928
Affinity Capture-MS Homo sapiens
7 MVD 4597
Co-fractionation Homo sapiens
8 HMCES  
Co-fractionation Homo sapiens
9 ASS1 445
Co-fractionation Homo sapiens
10 CASP7  
Co-fractionation Homo sapiens
11 VAPA 9218
Affinity Capture-MS Homo sapiens
12 CALR3  
Proximity Label-MS Homo sapiens
13 TIMM9  
Co-fractionation Homo sapiens
14 RHOC 389
Affinity Capture-MS Homo sapiens
Affinity Capture-MS Homo sapiens
15 ECT2 1894
Affinity Capture-MS Homo sapiens
16 Bcas2  
Affinity Capture-MS Mus musculus
17 LAGE3  
Affinity Capture-MS Homo sapiens
18 LRRC59 55379
Proximity Label-MS Homo sapiens
19 GLB1 2720
Affinity Capture-MS Homo sapiens
Co-fractionation Homo sapiens
20 DNAJB2 3300
Affinity Capture-MS Homo sapiens
Affinity Capture-MS Homo sapiens
Affinity Capture-MS Homo sapiens
21 PLAUR 5329
Co-fractionation Homo sapiens
22 HNRNPA2B1 3181
Co-fractionation Homo sapiens
23 DNAJB1 3337
Affinity Capture-MS Homo sapiens
24 RORC 6097
Affinity Capture-MS Homo sapiens
25 KIF20A 10112
Affinity Capture-MS Homo sapiens
26 NHLRC2 374354
Affinity Capture-MS Homo sapiens
27 C9orf40  
Affinity Capture-MS Homo sapiens
28 MEPCE 56257
Affinity Capture-MS Homo sapiens
29 FBXO6 26270
Affinity Capture-MS Homo sapiens
Affinity Capture-MS Homo sapiens
30 DDX58 23586
Affinity Capture-RNA Homo sapiens
31 LTB4R2  
Two-hybrid Homo sapiens
32 YPEL5 51646
Affinity Capture-MS Homo sapiens
33 OAT 4942
Co-fractionation Homo sapiens
34 CTSD 1509
Co-fractionation Homo sapiens
35 KLHDC9  
Affinity Capture-MS Homo sapiens
Affinity Capture-MS Homo sapiens
36 CDK2 1017
Affinity Capture-MS Homo sapiens
37 NAMPT 10135
Co-fractionation Homo sapiens
38 BZW2 28969
Co-fractionation Homo sapiens
39 RAB2A 5862
Co-fractionation Homo sapiens
40 CHMP4B 128866
Affinity Capture-MS Homo sapiens
41 SFXN5  
Affinity Capture-MS Homo sapiens
Affinity Capture-MS Homo sapiens
42 FTO 79068
Co-fractionation Homo sapiens
43 SUMO2 6613
Co-fractionation Homo sapiens
44 FZR1  
Affinity Capture-MS Homo sapiens
45 PEPD 5184
Co-fractionation Homo sapiens
46 PVRL4  
Affinity Capture-MS Homo sapiens
47 SGTA 6449
Proximity Label-MS Homo sapiens
48 TRNT1 51095
Co-fractionation Homo sapiens
49 VIM 7431
Affinity Capture-MS Homo sapiens
50 RHOA 387
Affinity Capture-MS Homo sapiens
Affinity Capture-MS Homo sapiens
51 PHF8  
Affinity Capture-MS Homo sapiens
52 ABCE1 6059
Affinity Capture-MS Homo sapiens
53 NEU1 4758
Affinity Capture-Western Homo sapiens
Co-fractionation Homo sapiens
Co-fractionation Homo sapiens
54 CTNNBIP1 56998
Affinity Capture-MS Homo sapiens
55 TMEM192 201931
Affinity Capture-MS Homo sapiens
56 ABHD14A  
Co-fractionation Homo sapiens
View the network image/svg+xml



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