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Molecular surface of the MotB-C dimer colored according to the average main-chain rmsd for the superimposition of the structures of MotB-C and the PG-binding domains of PALs and RmpM (see Fig. 2D). The color gradient from blue, through white, to red corresponds to the rmsd range from 0 to ≥4 Å. The modeled glycan chains are shown in ball representation, and the hypothetical position of the peptide cross-bridge linking the (0) NAM residues is shown in yellow.
