Download MendeleyBacA: a possible regulator that contributes to the biofilm formation of Pseudomonas aeruginosa .
Wallart, L., Ben Mlouka, M.A., Saffiedine, B., Coquet, L., Le, H., Hardouin, J., Jouenne, T., Phan, G., Kiefer-Meyer, M.C., Girard, E., Broutin, I., Cosette, P.(2024) Front Microbiol 15: 1332448-1332448
- PubMed: 38505547
- DOI: https://doi.org/10.3389/fmicb.2024.1332448
- Primary Citation of Related Structures:
8Q8O - PubMed Abstract:
Previously, we pointed out in P. aeruginosa PAO1 biofilm cells the accumulation of a hypothetical protein named PA3731 and showed that the deletion of the corresponding gene impacted its biofilm formation capacity. PA3731 belongs to a cluster of 4 genes ( pa3732 to pa3729 ) that we named bac for "Biofilm Associated Cluster." The present study focuses on the PA14_16140 protein, i.e., the PA3732 (BacA) homolog in the PA14 strain. The role of BacA in rhamnolipid secretion, biofilm formation and virulence, was confirmed by phenotypic experiments with a bacA mutant. Additional investigations allow to advance that the bac system involves in fact 6 genes organized in operon, i.e., bacA to bacF. At a molecular level, quantitative proteomic studies revealed an accumulation of the BAC cognate partners by the bacA sessile mutant, suggesting a negative control of BacA toward the bac operon. Finally, a first crystallographic structure of BacA was obtained revealing a structure homologous to chaperones or/and regulatory proteins.
Organizational Affiliation:
Univ Rouen Normandie, INSA Rouen Normandie, CNRS, Normandie Univ, PBS UMR 6270, Rouen, France.
