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. Author manuscript; available in PMC: 2013 Dec 21.
Published in final edited form as: Biochemistry. 2012 Dec 11;51(51):10218–10228. doi: 10.1021/bi301287h

Figure 1.

Figure 1

Working model of the core bacterial chemosensory array (20, 31, 32). Receptor trimer-of-dimers (gray) are arrayed in a hexagonal pattern with one trimer at each vertex. Homodimers of the multi-domain CheA His kinase (black) pack between the long edges of adjacent trimers and also contact CheW (white oval). CheW and the structurally homologous P5 domain of CheA (black oval) interact with one another in a head to tail fashion forming an interconnected ring. This basic hexagonal unit is propagated throughout the array, forming a network of interconnected rings.