Cyclic AMP and its receptor protein are required for expression of transfer genes of conjugative plasmid F in Escherichia coli

@article{Kumar1983CyclicAA,
  title={Cyclic AMP and its receptor protein are required for expression of transfer genes of conjugative plasmid F in Escherichia coli},
  author={Sushil Kumar and Sunita Srivastava},
  journal={Molecular and General Genetics MGG},
  year={1983},
  volume={190},
  pages={27-34}
}
A number of cya and crp mutants of Escherichia coli HfrH were analyzed for several Tra functions of the F plasmid. The mutants were observed to be deficient in conjugal donor ability, absorption of phages MS2 and Qβ and surface exclusion. These defects were suppressed in cya mutants grown with cAMP supplementation. A cAMP concentration of 3×10-4 M produced maximal suppression of donor ability defect in a cya strain. cAMP did not suppress the Tra− phenotype of crp mutants. Latent periods of MS2… CONTINUE READING

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