Experiment description of studies that identified URB1 in exosomes

1 Experiment ID 226 MISEV standards ✔ EM EV Biophysical techniques ✔ GAPDH|CD9|FLOT1 EV Enriched markers ✔ LMNA|H2AFX|ATP5A1|TOMM20 EV Negative markers ✘ EV Particle analysis Identified molecule mRNA Identification method Small RNA sequencing (Illumina HiSeq 2000 (Solexa) PubMed ID 26027894     Organism Homo sapiens Experiment description Quantitative and qualitative analysis of small RNAs in human endothelial cells and exosomes provides insights into localized RNA processing, degradation and sorting Authors Bas W. M. van Balkom, Almut S. Eisele, D. Michiel Pegtel, Sander Bervoets, Marianne C. Verhaar Journal name Journal of Extracellular Vesicles Publication year 2015 Sample Endothelial cells Sample name HMEC-1 Isolation/purification methods Differential ultracentrifugation Sucrose density gradient Flotation density 1.10 g/mL Molecules identified in the study miRNA Protein snoRNA lncRNA yRNA snRNA mRNA ncRNA mtRNA vtRNA scaRNA lincRNA Methods used in the study Small RNA sequencing (Illumina HiSeq 2000 (Solexa) Western blotting

2 Experiment ID 211 MISEV standards ✔ EM EV Biophysical techniques ✔ TSG101|Alix|EpCAM|TFRC EV Enriched markers ✔ cytochrome c|GOLGA2 EV Negative markers ✘ EV Particle analysis Identified molecule protein Identification method Mass spectrometry PubMed ID 23333927     Organism Homo sapiens Experiment description Characterization and proteomic analysis of ovarian cancer-derived exosomes. Authors Liang B, Peng P, Chen S, Li L, Zhang M, Cao D, Yang J, Li H, Gui T, Li X, Shen K. Journal name J Proteomics Publication year 2013 Sample Ovarian cancer cells Sample name IGROV1 Isolation/purification methods Differential centrifugation Ultracentrifugation Sucrose density gradient Flotation density 1.09-1.15 g/mL Molecules identified in the study Protein Methods used in the study Mass spectrometry

3 Experiment ID 212 MISEV standards ✔ CEM EV Biophysical techniques ✔ TSG101|Alix|EpCAM|TFRC EV Enriched markers ✔ Cytochrome C|GOLGA2 EV Negative markers ✘ EV Particle analysis Identified molecule protein Identification method Mass spectrometry PubMed ID 23333927     Organism Homo sapiens Experiment description Characterization and proteomic analysis of ovarian cancer-derived exosomes. Authors Liang B, Peng P, Chen S, Li L, Zhang M, Cao D, Yang J, Li H, Gui T, Li X, Shen K. Journal name J Proteomics Publication year 2013 Sample Ovarian cancer cells Sample name OVCAR-3 Isolation/purification methods Differential centrifugation Ultracentrifugation Sucrose density gradient Flotation density 1.09-1.15 g/mL Molecules identified in the study Protein Methods used in the study Mass spectrometry

Protein-protein interactions for URB1

Protein Interactor ExoCarta ID Identification method PubMed Species No interactions are found.

Pathways in which URB1 is involved

No pathways found