Phosphorylation sites within CnaA and CnaB subunits identified by TiO2 enrichment and LC-MS/MS analysis.

a[pS] indicates phosphorylated residue.bMascot identity score of >41 indicates identity or extensive homology (pcProbability of phosphorylated residue localization based on Ascore algorithm.CnaA subunit and CnaB subunit peptides contained uniquely identified phosphorylation residues or combinations of phosphorylation residues. Due to the proximity of multiple phosphorylatable residues within these peptides, mass spectra from each identification were submitted to an independent algorithm (Ascore) which assigns confidences to the localization of each phosphorylation.