Gene description for OSBPL1A
Gene name oxysterol binding protein-like 1A
Gene symbol OSBPL1A
Other names/aliases ORP-1
Species Homo sapiens
 Database cross references - OSBPL1A
ExoCarta ExoCarta_114876
Entrez Gene 114876
HGNC 16398
MIM 606730
UniProt Q9BXW6  
 OSBPL1A identified in exosomes derived from the following tissue/cell type
Hepatocytes 26054723    
Urine 19056867    
 Gene ontology annotations for OSBPL1A
Molecular Function
    cholesterol binding GO:0015485 IDA
    protein binding GO:0005515 IPI
    phospholipid binding GO:0005543 NAS
Biological Process
    vesicle-mediated transport GO:0016192 NAS
    lipid transport GO:0006869 IEA
    cholesterol metabolic process GO:0008203 NAS
    antigen processing and presentation of exogenous peptide antigen via MHC class II GO:0019886 TAS
Subcellular Localization
    nucleus GO:0005634 IDA
    nucleoplasm GO:0005654 IDA
    cytoplasm GO:0005737 IDA
    intracellular GO:0005622 IC
    lysosomal membrane GO:0005765 TAS
    extracellular exosome GO:0070062 IDA
    late endosome GO:0005770 IDA
 Experiment description of studies that identified OSBPL1A in exosomes
Experiment ID 237
ISEV standards
EV Biophysical techniques
EV Cytosolic markers
EV Membrane markers
EV Negative markers
EV Particle analysis
Identified molecule mRNA
Identification method RNA Sequencing
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 Hepatocytes
Sample name MIHA
Isolation/purification methods Differential centrifugation
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
RNA Sequencing
Experiment ID 63
ISEV standards
EV Biophysical techniques
EV Cytosolic markers
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 OSBPL1A
  Protein Interactor ExoCarta ID Identification method PubMed Species
No interactions are found.
 Pathways in which OSBPL1A is involved
MHC class II antigen presentation TAS Reactome

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