and that the mass spectrometer does not detect every last peptide, so minor PTMs occurring on a small percentage of proteins are often not observed. In the top-down approach, intact proteins are ...

TThe expression CMS is a single quadrupole mass spectrometer, equipped with ESI and APCI probes, switchable with minimal effort. The instrument has a mass range of m/z 10 to m/z 1,200, and a ...

Mass spectrometry is an analytical technique that uses an instrument called a mass spectrometer to measure the mass-to-charge ratios of molecular ions. Molecules fragment within the mass ...