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. 2016 Dec 6;11(12):e0166643. doi: 10.1371/journal.pone.0166643

Fig 3. Interactions of the N- and C-terminal segments with neighboring molecules.

Fig 3

(A) Segments 17–32 are swapped between two molecules related by 2-fold symmetry and are shown as thick ribbon with residues 23–26 in ß-strand conformation. One molecule is painted rainbow, the other is cyan with the N-terminus colored magenta. (B) The extended C-terminus containing His-tag of magenta molecule contacts a symmetry-related molecule (rainbow colored, N-terminus in blue to C-terminus in red). The extended C-terminus is shown as thick ribbon. These interactions connect molecules into a long chain. (C) A model of GtgE reconstructed by re-swapping the N-terminal segment. The residues 40–214 of molecule A were connected to the swapped segment 17–32 of molecule B through a short linker.