Figure 4From: Calculations of relative intensities of fragment ions in the MSMS spectra of a doubly charged penta-peptideGAVLK_NH_3 isomer. An example of a GAVLK penta-peptide isomer designated as GAVLK_NH_3. It is protonated at the amide nitrogen in position 3 and at the amine group of the C-terminal lysine. Arrows point to the moving and sequestered protons.Back to article page