Fig. 1

A Structure of Vadadustat B Structure of Roxadustat C The catalytic domain of PHD2 complexed with Vadadustat (AKB-6548) and showing Bidentate coordination of iron (orange sphere) and hydrogen bonding with Arg383, Tyr329 and Tyr303. D The catalytic domain of PHD2 complexed with Roxadustat (FG4529) and showing Bidentate coordination of iron (orange sphere) and hydrogen bonding with Arg383, Tyr329, and Tyr303