Modern mass spectrometry (MS)-based approaches are capable of identifying and quantifying thousands of proteins and phosphorylation events in a single biological experiment. Here we present a (phospho)proteomic workflow based on in-solution proteome digestion of samples labeled by stable isotope labeling by amino acids in cell culture (SILAC) and phosphopeptide enrichment using strong cation exchange (SCX) and TiO 2  chromatographies. These procedures are followed by high-accuracy MS measurement on an Orbitrap mass spectrometer and subsequent bioinformatic processing using MaxQuant software.