Gene description for STXBP1
Gene name syntaxin binding protein 1
Gene symbol STXBP1
Other names/aliases MUNC18-1
NSEC1
P67
RBSEC1
UNC18
Species Homo sapiens
 Database cross references - STXBP1
ExoCarta ExoCarta_6812
Entrez Gene 6812
HGNC 11444
MIM 602926
UniProt P61764  
 STXBP1 identified in exosomes derived from the following tissue/cell type
Hepatocellular carcinoma cells 26054723    
Melanoma cells 15478216    
Melanoma cells 25950383    
Melanoma cells 25950383    
Melanoma cells 25950383    
Melanoma cells 25950383    
Melanoma cells 25950383    
Melanoma cells 25950383    
Neuroblastoma cells 25944692    
Urine 19056867    
 Gene ontology annotations for STXBP1
Molecular Function
    syntaxin binding GO:0019905 IPI
    protein N-terminus binding GO:0047485 IEA
    protein domain specific binding GO:0019904 IEA
    protein kinase binding GO:0019901 IEA
    SNARE binding GO:0000149 ISS
    identical protein binding GO:0042802 ISS
    poly(A) RNA binding GO:0044822 IDA
    protein binding GO:0005515 IPI
    syntaxin-1 binding GO:0017075 ISS
Biological Process
    axon target recognition GO:0007412 ISS
    protein transport GO:0015031 IEA
    platelet degranulation GO:0002576 IMP
    neuromuscular synaptic transmission GO:0007274 IEA
    neurotransmitter secretion GO:0007269 TAS
    synaptic vesicle maturation GO:0016188 ISS
    regulation of synaptic vesicle priming GO:0010807 ISS
    regulation of insulin secretion GO:0050796 TAS
    small molecule metabolic process GO:0044281 TAS
    synaptic transmission GO:0007268 TAS
    protein stabilization GO:0050821 IEA
    platelet aggregation GO:0070527 IMP
    regulation of synaptic vesicle fusion to presynaptic membrane GO:0031630 TAS
    protein localization to plasma membrane GO:0072659 IDA
    energy reserve metabolic process GO:0006112 TAS
    long term synaptic depression GO:0060292 IEA
    vesicle docking involved in exocytosis GO:0006904 IEA
    regulation of SNARE complex assembly GO:0035542 TAS
    negative regulation of synaptic transmission, GABAergic GO:0032229 ISS
    negative regulation of neuron apoptotic process GO:0043524 IEA
    glutamate secretion GO:0014047 TAS
    positive regulation of calcium ion-dependent exocytosis GO:0045956 IEA
Subcellular Localization
    mitochondrion GO:0005739 ISS
    protein complex GO:0043234 ISS
    cytosol GO:0005829 TAS
    extracellular exosome GO:0070062 IDA
    nucleoplasm GO:0005654 IDA
    plasma membrane GO:0005886 ISS
    cytoplasm GO:0005737 ISS
    platelet alpha granule GO:0031091 IDA
 Experiment description of studies that identified STXBP1 in exosomes
1
Experiment ID 234
ISEV standards
✔
EM
EV Biophysical techniques
✔
TSG101|Alix|HSC70|GAPDH
EV Cytosolic markers
✘ EV Membrane markers
✔
HSP90B1
EV Negative markers
✔
qNano
EV Particle analysis
Identified molecule protein
Identification method Mass spectrometry
PubMed ID 26054723    
Organism Homo sapiens
Experiment description Hepatocellular carcinoma-derived exosomes promote motility of immortalized hepatocyte through transfer of oncogenic proteins and RNAs
Authors He M, Qin H, Poon TC, Sze SC, Ding X, Co NN, Ngai SM, Chan TF, Wong N
Journal name Carcinogenesis
Publication year 2015
Sample Hepatocellular carcinoma cells
Sample name HKCI-C3
Isolation/purification methods Differential centrifugation
Filtration
Ultracentrifugation
Sucrose density gradient
Flotation density 1.13-1.19 g/mL
Molecules identified in the study Protein
RNA
Methods used in the study Western blotting
Mass spectrometry
RT-PCR
RNA Sequencing
2
Experiment ID 12
ISEV standards
✔
EM
EV Biophysical techniques
✘ EV Cytosolic markers
✔
MHCI
EV Membrane markers
✔
CANX|cytochrome c
EV Negative markers
✘ EV Particle analysis
Identified molecule protein
Identification method Mass spectrometry
PubMed ID 15478216    
Organism Homo sapiens
Experiment description Proteomic analysis of melanoma-derived exosomes by two-dimensional polyacrylamide gel electrophoresis and mass spectrometry.
Authors Mears R, Craven RA, Hanrahan S, Totty N, Upton C, Young SL, Patel P, Selby PJ, Banks RE
Journal name PROTEOMICS
Publication year 2004
Sample Melanoma cells
Sample name MeWo
SK-MEL-28
Isolation/purification methods Filtration
Ultracentrifugation
Sucrose density gradient
Flotation density 1.13-1.20 g/mL
Molecules identified in the study Protein
Methods used in the study Mass spectrometry [4700 Proteomics Analyzer]
Western blotting
3
Experiment ID 254
ISEV standards
✔
EM
EV Biophysical techniques
✔
TSG101
EV Cytosolic markers
✔
FLOT1|CD81
EV Membrane markers
✘ EV Negative markers
✔
NTA
EV 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 MNT-1
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
4
Experiment ID 255
ISEV standards
✔
EM
EV Biophysical techniques
✔
TSG101
EV Cytosolic markers
✔
FLOT1
EV Membrane markers
✘ EV Negative markers
✔
NTA
EV 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 G1
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
5
Experiment ID 256
ISEV standards
✔
EM
EV Biophysical techniques
✔
TSG101
EV Cytosolic markers
✔
FLOT1
EV Membrane markers
✘ EV Negative markers
✔
NTA
EV 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 501mel
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
6
Experiment ID 257
ISEV standards
✔
EM
EV Biophysical techniques
✔
TSG101
EV Cytosolic markers
✔
FLOT1
EV Membrane markers
✘ EV Negative markers
✔
NTA
EV 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 Daju
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
7
Experiment ID 258
ISEV standards
✔
EM
EV Biophysical techniques
✔
TSG101
EV Cytosolic markers
✔
FLOT1|CD81
EV Membrane markers
✘ EV Negative markers
✔
NTA
EV 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 SKMEL28
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
8
Experiment ID 260
ISEV standards
✔
EM
EV Biophysical techniques
✔
TSG101
EV Cytosolic markers
✔
FLOT1|CD81
EV Membrane markers
✘ EV Negative markers
✔
NTA
EV 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
9
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
10
Experiment ID 63
ISEV standards
✘ EV Biophysical techniques
✘ EV Cytosolic markers
✔
AQP2
EV Membrane markers
✘ EV Negative markers
✘ EV 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
 Protein-protein interactions for STXBP1
  Protein Interactor ExoCarta ID Identification method PubMed Species
1 TUBB2A 7280
Affinity Capture-Western Homo sapiens
2 SYTL4 94121
Affinity Capture-Western Homo sapiens
3 TUBA4A 7277
Affinity Capture-Western Homo sapiens
4 STX1B 112755
Reconstituted Complex Homo sapiens
5 Apba1  
Two-hybrid Rattus norvegicus
6 MAPT  
Affinity Capture-Western Homo sapiens
7 DOC2B  
Invitro Homo sapiens
Invivo Homo sapiens
Two-hybrid Homo sapiens
8 USO1 8615
Affinity Capture-MS Homo sapiens
9 STX1A 6804
Invivo Homo sapiens
Invivo Homo sapiens
Affinity Capture-Western Homo sapiens
Reconstituted Complex Homo sapiens
Affinity Capture-Western Homo sapiens
Affinity Capture-Western Homo sapiens
Reconstituted Complex Homo sapiens
10 Stx5a  
Two-hybrid Rattus norvegicus
11 SNAP25 6616
Affinity Capture-MS Homo sapiens
12 STX3 6809
Reconstituted Complex Homo sapiens
13 CDK5 1020
Affinity Capture-MS Homo sapiens
Affinity Capture-Western Homo sapiens
14 DOC2A  
Invitro Homo sapiens
Invivo Homo sapiens
Two-hybrid Homo sapiens
15 Apba2  
Two-hybrid Rattus norvegicus
16 STX4 6810
Reconstituted Complex Homo sapiens
Affinity Capture-Western Homo sapiens
17 STX2 2054
Reconstituted Complex Homo sapiens
Affinity Capture-Western Homo sapiens
18 Dlgh4  
Two-hybrid Rattus norvegicus
View the network image/svg+xml
 Pathways in which STXBP1 is involved
PathwayEvidenceSource
Regulation of insulin secretion TAS Reactome





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