Figure 4From: Hydra: software for tailored processing of H/D exchange data from MS or tandem MS analysesExtracting deuterium levels from MS data. The expansion of a native isotopic distribution for a peptide (red) resulting from deuteration (black) can be quantified in terms of an average deuteration level (Davg), as shown in the equation (inset). Here, Mavg refers to the average mass of the peptide ion and M0 the exact mass of the peptide monoisotopic ion.Back to article page