Figure 2.
Phosphopeptide spectral library composition. (a) Aposymbiotic and symbiotic conditions contributed to the spectral library and were equally represented, as shown by the equal distribution of the protein groups (PGs). (b) Number of precursors, phosphopeptides, phosphosites and phosphoproteins (in PGs) encompassed by the library. (c) Relative presence of phosphorylated amino acid residues. (d) Localization probability (x) of the assigned phosphosites