Figure 4.

MS2 of the 3+ peptide ADLINNLGTIAK after fragmentation by ETD (A), EThcD (B) or HCD (C). * denotes DiLeu labeled site and the starred peak represents the HCD type reporter ion at m/z 114.

MS2 of the 3+ peptide ADLINNLGTIAK after fragmentation by ETD (A), EThcD (B) or HCD (C). * denotes DiLeu labeled site and the starred peak represents the HCD type reporter ion at m/z 114.