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Cartoon illustrates the assembly of an extended receptor array. The initial components, consisting of the P3 and P5 domains of CheA (orange), MCP trimers (blue), and CheW (yellow) form a core complex. Three core complexes are interconnected by P5/CheW interactions to form a lattice unit, which can assemble further to form an indefinitely large array. Rings containing only CheW may play a role in reinforcing the network to achieve optimal cooperativity and sensitivity.
