Gene description for QPCT
Gene name glutaminyl-peptide cyclotransferase
Gene symbol QPCT
Other names/aliases GCT
QC
sQC
Species Homo sapiens
 Database cross references - QPCT
ExoCarta ExoCarta_25797
Vesiclepedia VP_25797
Entrez Gene 25797
HGNC 9753
MIM 607065
UniProt Q16769  
 QPCT identified in exosomes derived from the following tissue/cell type
Colorectal cancer cells 17956143    
Colorectal cancer cells 23161513    
Colorectal cancer cells 23161513    
Colorectal cancer cells 23161513    
Mesenchymal stem cells 36408942    
 Gene ontology annotations for QPCT
Molecular Function
    glutaminyl-peptide cyclotransferase activity GO:0016603 IDA
    zinc ion binding GO:0008270 IDA
Biological Process
    cellular protein modification process GO:0006464 TAS
    peptidyl-pyroglutamic acid biosynthetic process, using glutaminyl-peptide cyclotransferase GO:0017186 IDA
Subcellular Localization
    extracellular exosome GO:0070062 IDA
 Experiment description of studies that identified QPCT in exosomes
1
Experiment ID 20
MISEV standards
EM
EV Biophysical techniques
HSP90|CD63|CD81|LAMP1
EV Enriched markers
GOLGA2|cytochrome c
EV Negative markers
EV Particle analysis
Identified molecule protein
Identification method Mass spectrometry
PubMed ID 17956143    
Organism Homo sapiens
Experiment description Proteomic analysis of microvesicles derived from human colorectal cancer cells.
Authors Choi DS, Lee JM, Park GW, Lim HW, Bang JY, Kim YK, Kwon KH, Kwon HJ, Kim KP, Gho YS
Journal name JPR
Publication year 2007
Sample Colorectal cancer cells
Sample name HT29
Isolation/purification methods Differential centrifugation
Sucrose density gradient
Diafiltration
Flotation density 1.16 g/mL
Molecules identified in the study Protein
Methods used in the study Mass spectrometry [LTQ]
Western blotting
2
Experiment ID 207
MISEV standards
EM
EV Biophysical techniques
TSG101|HSP70|FLOT1
EV Enriched markers
VDAC
EV Negative markers
NTA
EV 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
3
Experiment ID 208
MISEV standards
EM
EV Biophysical techniques
TSG101|HSP70|FLOT1
EV Enriched markers
VDAC
EV Negative markers
NTA
EV 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
4
Experiment ID 209
MISEV standards
EV Biophysical techniques
TSG101|HSP70|FLOT1
EV Enriched markers
VDAC
EV Negative markers
NTA
EV 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
5
Experiment ID 488
MISEV standards
EM
EV Biophysical techniques
CD9|CD81|CD63|GAPDH|SDCBP|LAMP1|TFRC|UCHL1|FLOT2|LAMP2|FLOT1|ICAM1|RAB5B|CD151|RAB35|TSG101|RAB5A|CD82
EV Enriched markers
CANX
EV Negative markers
NTA
EV 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
 Protein-protein interactions for QPCT
  Protein Interactor ExoCarta ID Identification method PubMed Species
No interactions are found.
 Pathways in which QPCT is involved
No pathways found





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