Unusual fragmentation of derivatized cysteine-containing peptides.
Nick Degraan-WeberBingqing ZhaoJames Patrick ReillyPublished in: Rapid communications in mass spectrometry : RCM (2019)
The combination of a dual-labeling technique and low-energy fragmentation produces an abundant diagnostic ion for the analysis of cysteine-containing peptides. These 118 and 119 Da losses are observed when protons are sequestered.