Id |
Subject |
Object |
Predicate |
Lexical cue |
T366 |
0-61 |
Sentence |
denotes |
Analysis of Disulfide Bonds for SARS-Cov-2 S Protein by LC-MS |
T367 |
62-247 |
Sentence |
denotes |
Two 10-μg aliquots of SARS-CoV-2 S protein were denatured by incubating with 20% acetonitrile at room temperature and alkylated by 13.75 mM of iodoacetamide at room temperature in dark. |
T368 |
248-382 |
Sentence |
denotes |
The two aliquots of proteins were then digested respectively using alpha lytic protease, or a combination of trypsin, Lys-C and Glu-C. |
T369 |
383-458 |
Sentence |
denotes |
Following digestion, the proteins were deglycosylated by PNGaseF treatment. |
T370 |
459-682 |
Sentence |
denotes |
The resulting peptides were separated on an Acclaim PepMap RSLC C18 column (75 μm x 15 cm) and eluted into the nano-electrospray ion source of an Orbitrap Fusion Lumos Tribrid mass spectrometer at a flow rate of 200 nL/min. |
T371 |
683-828 |
Sentence |
denotes |
The elution gradient consists of 1%–40% acetonitrile in 0.1% formic acid over 370 min followed by 10 min of 80% acetonitrile in 0.1% formic acid. |
T372 |
829-926 |
Sentence |
denotes |
The spray voltage was set to 2.2 kV and the temperature of the heated capillary was set to 280°C. |
T373 |
927-1107 |
Sentence |
denotes |
Full MS scans were acquired from m/z 200 to 2000 at 60k resolution, and MS/MS scans following electron transfer dissociation (ETD) were collected in the Orbitrap at 15k resolution. |
T374 |
1108-1248 |
Sentence |
denotes |
The raw spectra were analyzed by Byonic (v3.8.13, Protein Metrics Inc.) with mass tolerance set as 20 ppm for both precursors and fragments. |
T375 |
1249-1329 |
Sentence |
denotes |
The search output was filtered at 1% false discovery rate and 10 ppm mass error. |
T376 |
1330-1412 |
Sentence |
denotes |
The spectra assigned as cross-linked peptides were manually evaluated for Cys0015. |