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Genetic diversity of b-glucuronidase activity among 14 strains of the dominant human gut anaerobe Ruminococcus gnavus Genet. Mol. Biol.
Beaud,Diane; Ladiré,Monique; Azevedo,Vasco; Bridonneau,Chantal; Anba-Mondoloni,Jamila.
Bacterial beta-glucuronidase activity in the gut increases the enterohepatic circulation of toxic compounds and plays a major role in the etiology of colon cancer. Previously, we had found that the gus gene, which codes for beta-glucuronidase in a dominant anaerobic species of the gut microbiota, Ruminococcus gnavus strain E1, is transcribed as part of an operon that includes three ORFs that code for beta-glucoside permeases of the phosphotransferase systems. This genetic organization had never been described. We have now compared beta-glucuronidase activity and the genetic environment of the gus gene in 14 strains of Ruminococcus gnavus.We found that five out of the seven glucuronidase-positive R. gnavus strains possessed another glucuronidase gene...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Ruminococcus gnavus; Glucuronidases; Digestive microbiota.
Ano: 2006 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572006000200026
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