Article
Molecular and phenotypic traits of in-vitro-selected mutants of Bifidobacterium resistant to rifaximin.
International journal of antimicrobial agents - 1 Jun 2008
Vitali Beatrice, Turroni Silvia, Serina Stefania, Sosio Margherita, Vannini Lucia, Candela Marco, Guerzoni Maria Elisabetta, Brigidi Patrizia
Abstract excerpt
Nucleotide mutations inside a core region of the rpoB gene, encoding the beta subunit of RNA polymerase, were found in rifaximin-resistant mutants of Bifidobacterium. Five different missense mutations of codons 513, 516, 522 and 529 were identified. Further aspects of rifaximin resistance were investigated, using Bifidobacterium infantis BI07 as a model strain. Partial resistance of RNA polymerase of a BI07...
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