Table 3. Hydrogen-Bonding Interactions between Substrate-Propionates and Amino Acid Residues in the Active Site of CdChdC for the Three Simulated Systems: i.e., Coproheme in the Resting State, MMD (Monovinyl Monopropionyl Deuteroheme) in Coproheme Pose, and MMD in Catalytically Active Pose (90° Rotation)^a.

^aDirect and bridging hydrogen bonds are given separately.