ISOTOPE LABELING FOR DETERMINING PROTEIN SYNTHESIS AND PROTEIN EXPRESSION

摘要

A method including isotope labeling of a newly synthesized protein in a sufficient quantity such that a newly synthesized protein spectra and the pre-existing protein spectra are sufficiently separated. A further method including determining a ratio of a new and a pre-existing protein from mass spectra obtained by using mass spectrometry. In this method a resultant spectrum may be presented as integrated peak heights for a corresponding mass to charge ratio in the 'centroid' mode.