Gene description for AP1S1
Gene name adaptor-related protein complex 1, sigma 1 subunit
Gene symbol AP1S1
Other names/aliases AP19
Species Homo sapiens
 Database cross references - AP1S1
ExoCarta ExoCarta_1174
Entrez Gene 1174
HGNC 559
MIM 603531
UniProt P61966  
 AP1S1 identified in exosomes derived from the following tissue/cell type
Mesenchymal stem cells Unpublished / Not applicable
 Gene ontology annotations for AP1S1
Molecular Function
    protein transporter activity GO:0008565 IEA
Biological Process
    post-Golgi vesicle-mediated transport GO:0006892 TAS
    response to virus GO:0009615 IEP
    intracellular protein transport GO:0006886 IEA
    regulation of defense response to virus by virus GO:0050690 TAS
    antigen processing and presentation of exogenous peptide antigen via MHC class II GO:0019886 TAS
    viral process GO:0016032 TAS
    membrane organization GO:0061024 TAS
    receptor-mediated endocytosis GO:0006898 TAS
Subcellular Localization
    AP-1 adaptor complex GO:0030121 TAS
    trans-Golgi network membrane GO:0032588 TAS
    extracellular exosome GO:0070062 IDA
    membrane GO:0016020 IDA
    cytoplasmic vesicle membrane GO:0030659 TAS
    clathrin-coated endocytic vesicle membrane GO:0030669 TAS
    cytosol GO:0005829 TAS
    Golgi membrane GO:0000139 TAS
    coated pit GO:0005905 IEA
    lysosomal membrane GO:0005765 TAS
 Experiment description of studies that identified AP1S1 in exosomes
Experiment ID 126
ISEV standards
EV Biophysical techniques
EV Cytosolic markers
EV Membrane markers
EV Negative markers
EV 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PubMed ID Unpublished / Not applicable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
 Protein-protein interactions for AP1S1
  Protein Interactor ExoCarta ID Identification method PubMed Species
1 AP1M2 10053
Invivo Homo sapiens
Affinity Capture-MS Homo sapiens
2 SLC16A1 6566
Affinity Capture-MS Homo sapiens
3 SEC61A1  
Affinity Capture-MS Homo sapiens
4 AP1G2 8906
Two-hybrid Homo sapiens
5 AP1G1 164
Affinity Capture-MS Homo sapiens
Two-hybrid Homo sapiens
6 ARMC6 93436
Affinity Capture-MS Homo sapiens
7 FLJ10213  
Affinity Capture-MS Homo sapiens
8 RAB10 10890
Affinity Capture-MS Homo sapiens
Affinity Capture-MS Homo sapiens
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