Characterization of the CheAS/CheZ complex: a specific interaction resulting in enhanced dephosphorylating activity on CheY‐phosphate

The cheA gene encodes two overlapping polypeptides with a common carboxyl terminus: CheAL and CheAS. CheAL plays a central role in the Escherichiacoli chemotaxis signalling pathway by autophosphorylation and transferring the phosphate to both CheY and CheB. On the other hand, the physiological functions of CheAS remain unknown.

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