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. Author manuscript; available in PMC: 2009 Jun 13.
Published in final edited form as: J Mol Biol. 2008 Apr 16;379(4):656–665. doi: 10.1016/j.jmb.2008.04.023

Figure 1.

Figure 1

Dimer configurations of sensor kinase periplasmic domains. PDB IDs appears in parentheses. (A) Tar (1VLT) - cylinders depict the proposed 4-helix TM bundle that extends from the periplasmic domain; (B) PhoQ (3BQ8); (C) PhoQ (1YAX); (D) CitA (1P0Z); (E) and CitA (2J80). Each dimer configuration is depicted in two panels. The left panel shows the protein from the “side” view, sitting on top of the membrane, as it would be seen if viewed from the plane of the membrane. The right panel is rotated 90 degrees and depicts the “bottom” view of the protein, as it would be seen if looking through the membrane from below. N-terminal helices are colored light blue. Blue and red spheres indicate the N and C-termini respectively. N-terminal distances are: (A) 17 Å (B) 18 Å (C) 27 Å (D) 30 Å and (E) 15 Å. C-terminal distances are: (A) 18 Å (B) 18 Å (C) 50 Å (D) 29 Å and (E) 30 Å.