Figure 2. M1-Fg interface.

a, Interface between M1^BC1 B2 (left, primed numbers refer to one helix and non-primed the opposing helix) and FgD (right) in surface representation (basic residues blue, acidic red, polar green, and nonpolar magenta). b, Schematic of the interface between M1^BC1 B1 (left) and B2 (right) in helical projection and FgD (cylinders, β chain in blue and γ in blue-green). Blue dotted lines connect residues making polar contacts, and gray and green arcs correspond to M1 residues making van der Waals contacts to Fg γ 108 and 109, respectively.