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. Author manuscript; available in PMC: 2016 Dec 4.
Published in final edited form as: J Mol Biol. 2015 Oct 30;427(24):3890–3907. doi: 10.1016/j.jmb.2015.10.015

Figure 6. P3P4 crystal structure and model.

Figure 6

(A) Structure of P3P4 (each subunit colored as light and dark ribbons) obtained with ADPCP (orange bonds) present in the nucleotide-binding pocket. View is perpendicular form Fig. 5A. (B) Model of P1 (light and dark purple ribbons) near the P4 ATP-binding pocket in 47AA. (C) CheA P3P4P5 structure based on the P3P4 conformation with CheW/P5 ring overlay [18]. (D) Model of CheA within the array. Trimers of receptor dimers (magenta) [85] located at the vertices of the hexagonal P5/CheW rings are shown from the side and below. The P3P4 structure predicts that the ATP-lids of the P4 domains will be oriented up toward the P5-CheW layer.