This project consisted of three HDX-MS experiments. First, we compared the dimeric PDK1(SKD-PIF) to monomeric PDK1(SKD) and mapped the differences in deuterium incorporation onto the dimer model. We then compared the deuterium incorporation kinetics for the kinase (PDK1(SKD)) and PH (PDK1(PH) domains of PDK1 with full-length PDK1 (PDK1(FL)) in pairwise experiments.