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The CXY phosphatase family. A, proposed transition state for CheY-P dephosphorylation (adapted from Ref. 12) highlighting the role of the essential Glu and Asn side chains (orange) and contributing residues from CheY (blue). B, structural comparison within the CXY family and FliMm. Secondary structural elements of each protein are shown as ribbons. The α2′/βx′/c2′ regions differentiate the members from each other (dark orange).
