Requirement of Adenosine 3′, 5′-Cyclic Phosphate for Flagella Formation in Escherichia coli and Salmonella typhimurium

Adenosine-3',5'-cyclic phosphate (cyclic AMP) is absolutely required for flagella formation and, hence, motility in cyclic AMP-deficient mutants of Escherichia coli and Salmonella typhimurium.