FIG 2 .
OMV show different protein profile from that of OM. Ten micrograms of purified OM and OMV proteins were run on 10% SDS-PAGE followed by Coomassie staining. Protein bands were excised from the gel and digested with trypsin. The resulting peptides were enriched using ZipTip C18 columns then analyzed via liquid chromatography coupled to tandem mass spectrometry (LC-MS/MS) followed by protein identification with Mascot search engine using the NCBInr database. The arrows point to the most abundant proteins in each band. Underlined proteins were detected only in the corresponding compartment.