Figure 3.

Lateral contacts involved in strands assembly. (A) Two adjacent molecules in opposing strands of the MamK filament model are shown in cartoon representation, in dark blue and khaki, respectively, with the EM map density at a contour level of 5.0 shown in grey. The top panel is represented from the side of the filament, and the bottom panel corresponds to a view from the top of the filament. (B) Close‐up view of the lateral contacts across strands in the MamK filament model shown with a black box in (A), with interacting residues in sticks. Two salt‐bridges, between Glu 81 and Arg 195, and between Arg 85 and Glu 202, form the interface, stabilized by additional hydrogen bonds.