New structures of active (PDX1.3) and inactive enzyme (PDX1.2) show Coulombic charge inversion that may alter ligand binding. Citation: "Tunable hetero-assembly of a plant pseudoenzyme-enzyme complex" Irina V. Novikova, Mowei Zhou, Chen Du, Marcelina Parra, Doo Nam Kim, Zachary L. VanAernum, Jared B. Shaw, Hanjo Hellmann, Vicki H. Wysocki, and James E. Evans (2020