Fig. 8

The molecular interactions have changed around Ca²⁺ in the active site that are caused by the K93I mutation. The models are displayed using the Pymol program. The residues in which the molecular interaction has changed are colored pink. The residues are represented in the stick scheme. The hydrogen-bonding interactions are displayed by black dash lines. a View of all residues in the wild PelN, b View of all residues in the K93I variant, c View of residue interactions around the Ca²⁺ activity site of the wild-type PelN, d View of residue interactions around the Ca²⁺ activity site of the K93I variant