7 ways to study protein phosphorylation

This application note provides an overview of seven major techniques used to study protein phosphorylation, a critical post‑translational modification that regulates cell signaling, metabolism, proliferation, differentiation, and disease pathways. It explains the biological importance of phosphorylation and then compares experimental methods (including SDS‑PAGE, western blotting, flow cytometry, kinase activity assays, ELISA, antibody arrays, and mass spectrometry), highlighting their workflows, advantages, limitations, and appropriate applications.

The resource also outlines essential experimental controls and discusses how each technique contributes uniquely to phospho‑proteomics, from single‑site detection to high‑throughput, discovery‑based phosphoprotein profiling.