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The proteolytic activity of Pseudomonas fluorescens 07A isolated from milk is not regulated by quorum sensing signals
Pinto, Uelinton M; Costa, Esther D; Mantovani, Hilario C; Vanetti, M. C. D.
  • Pinto, Uelinton M; Cornell University. Department of Microbiology. Ithaca. US
  • Costa, Esther D; Cornell University. Department of Microbiology. Ithaca. US
  • Mantovani, Hilario C; Universidade Federal de Viçosa. Departamento de Microbiologia. Viçosa. BR
  • Vanetti, M. C. D; Universidade Federal de Viçosa. Departamento de Microbiologia. Viçosa. BR
Braz. j. microbiol ; 41(1): 91-96, Jan.-Mar. 2010. graf, tab
Article in English | LILACS | ID: lil-531739
ABSTRACT
The proteolytic activity of Pseudomonas fluorescens 07A was investigated, and was optimal on tryptone-calcium medium. N-acyl-homoserine lactones (AHLs) were not detected on supernatants of late-exponential and stationary-phase culture broths. Synthetic AHLs or bacterial cell extracts added to the medium did not influence growth or proteolytic activity suggesting that quorum sensing might not regulate protease production in this strain.
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Full text: Available Index: LILACS (Americas) Main subject: Peptide Hydrolases / Pseudomonas fluorescens / Milk / Quorum Sensing / Lactones Language: English Journal: Braz. j. microbiol Journal subject: Microbiology Year: 2010 Type: Article Affiliation country: Brazil / United States Institution/Affiliation country: Cornell University/US / Universidade Federal de Viçosa/BR

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Full text: Available Index: LILACS (Americas) Main subject: Peptide Hydrolases / Pseudomonas fluorescens / Milk / Quorum Sensing / Lactones Language: English Journal: Braz. j. microbiol Journal subject: Microbiology Year: 2010 Type: Article Affiliation country: Brazil / United States Institution/Affiliation country: Cornell University/US / Universidade Federal de Viçosa/BR