Fig. 5.
Der p 2 semitryptic G49KPFQLEAVFEANQNTKTAK68 peptide modified by 1–5 Hex units. A, MS1 averaged over seven full scans showing the Hex1 (m/z 795.41, z = 3) and Hex2 (m/z 849.43, z = 3) modified peptides. B, MS1 averaged over four full scans ∼90 s earlier in the LC chromatogram showing the same peptide modified by 2–5 Hex units. The sequential mass increments of 54 (z = 3) represent individual Hex units.