The short form of the CheA protein restores kinase activity and chemotactic ability to kinase-deficient mutants.


Escherichia coli expresses two forms of the chemotaxis-associated CheA protein, CheAL and CheAS, as the result of translational initiation at two distinct, in-frame initiation sites in the gene cheA. The long form, CheAL, plays a crucial role in the chemotactic signal transduction mechanism by phosphorylating two other chemotaxis proteins: CheY and CheB… (More)


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