The Pseudomonas aeruginosa rhlAB operon is not expressed during the logarithmic phase of growth even in the presence of its activator RhlR and the autoinducer N-butyryl-homoserine lactone
Por:
Medina G., Juárez K., Soberón-Chávez G.
Publicada:
1 ene 2003
Resumen:
The Pseudomonas aeruginosa rhlAB operon encodes the enzyme rhamnosyltransferase 1, which produces the biosurfactant mono-rhamnolipid; rhlAB induction is dependent on the quorum-sensing transcription activator RhlR complexed with the autoinducer N-butyryl-homoserine lactone (C4-HSL). In this work we studied rhlAB induction in a P. aeruginosa and Escherichia coli background. We found that, in both bacteria, its expression is not induced during the logarithmic phase of growth even in the presence of RhlR and C4-HSL. Additionally, we found that rhlAB expression is partially ?s dependent.
Filiaciones:
Depto. de Microbiologia Molecular, Instituto de Biotecnolo?a, Univ. Nacional Autonoma de Mexico, Apdo. Postal 510-3, Cuernavaca Morelos 62251, Mexico
All Open Access, Bronze
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