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Electrostatic surfaces and regions interacting with rod proteins. (A and B) Cross-section image of the surface model with electrostatic potential of the S-ring structure. (C and D) Magnified views of the cyan and magenta squares in panel A. (E and F) Magnified views of the cyan and magenta squares in panel B. Sidechains contributing to the interaction with FlgB or FliE are shown in stick models. The secondary structure elements are labeled with gray text in panels C–F.
