PMC:7640975 / 12152-13506 JSONTXT

{"target":"https://pubannotation.org/docs/sourcedb/PMC/sourceid/7640975","sourcedb":"PMC","sourceid":"7640975","source_url":"https://www.ncbi.nlm.nih.gov/pmc/7640975","text":"nt biological replicates of mock-infected cellular samples were each labeled with iTRAQ-113, iTRAQ-114, and iTRAQ-115; the three independent biological replicates of PDCoV-infected samples were each labeled with iTRAQ-116, iTRAQ-119, and iTRAQ-121. All the labeled samples of each group were mixed with an equal amount, and then fractionated using an ACQUITY ultra performance liquid chromatography (UPLC) system (Waters Corp., Milford, MA, USA) combined with an ACQUITY UPLC BEH C18 column (300 Å, 1.7 μm, 2.1 mm × 150 mm). Finally, a total of 10 fractions of each group were collected. After merging two fractions of each group into one, the pooled 10 fractions were dried by using a rotary vacuum concentrator.\n\n2.6 LC-MS/MS Analysis\nLC-MS/MS analyses of the labeled peptides were carried out using a Q-Exactive mass spectrometer (Thermo Fisher Scientific, San Jose, CA, USA) combined with an EASY-nLC 1200 system (Thermo Fisher Scientific). After loading 2 μg of the labeled peptides onto a C18 reversed phase HPLC column (Thermo Fisher Scientific), peptides were chromatographed for 120 min at a flow rate of 300 nL/min over gradients from 2–80% (mobile phase A comprising 0.1% (v/v) formic acid and 2% (v/v) acetonitrile; mobile phase B comprising 0.1% (v/v) formic acid and 80% (v/v) acetonitrile). The following ion source parameters, including 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