Figure 3 | Scientific Reports

Figure 3

From: An odorant-binding protein in the elephant's trunk is finely tuned to sex pheromone (Z)-7-dodecenyl acetate

Figure 3

Examples of post-translationally modified peptides assigned to LafrOBP1 from trunk wash of the African elephant. An acetylated peptide, a phosphorylated peptide and the O-glycosylated peptide are shown. Identical peptides and corresponding fragmentation spectra were observed also in the recombinant protein expressed in the yeast Pichia pastoris (see Table S2). Panel A shows the fragmentation spectrum of the acetylated peptide (147–163) bearing modification at Lys151. Panel B shows the fragmentation spectrum of the phosphorylated peptide (152–163) bearing modification at Thr157. Panel C shows the fragmentation spectrum of the O-glycosylated peptide (124–146) bearing a tetra-N-acetyl-lactosamine-containing core-2 O-glycan linked to Ser128.

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