FIG. 7.

Local conformational change of EcDppA during state transition (thin line) and the residue size difference between PsDppA and EcDppA (thick line). PyMol (http://www.pymol.org/) was used to superpose the local structures of the open conformation (1DPE.pdb chain A) and the closed conformation (1DPP.pdb chain A). The residue size difference between PsDppA and EcDppA (ΔM_w) was calculated as the average relative molecular masses of PsDppA residues minus those of EcDppA residues. A ΔM_w of ±14 Da corresponds to one -CH₂. Both local structural superposition and relative molecular mass were calculated by using a sliding window of 21 residues. EcDppA numbering was used. r.m.s.d., root mean square deviation.