LAUSR

Multiplexed enhanced protein dynamic mass spectrometry (mePROD MS) enables robust quantification of translation in cell culture. Tandem mass tags (TMT) are combined with pulsed stable isotope labeling in cell culture (pSILAC) to monitor newly synthesized proteins on a proteome wide scale. While approaches combining pSILAC and TMT typically require long labeling times to reach sufficient intensity of the newly synthesized peptides in the mass spectrometer, mePROD uses a carrier signal that boosts the survey scan intensity and strongly increases identification rates. Hence, this protocol provides an easy and cost-efficient method to profile proteome-wide translatome changes at a temporal resolution of minutes.