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00925njm 22002777a 4500 dc Ferrandiz-Avellano, Maria-Jose author Ardanuy, Carmen author Liñares, Josefina author Balsalobre-Arenas, Maria Luz author Garcia, Maria Teresa author de la Campa, Adela G author 2011-01 Eight rifampin-resistant streptococci of the mitis group were identified at the species level by using a concatenated 16S rRNA gene-sodA-rpoB-hlpA sequence. Characterization of their rpoB alleles showed single amino acid changes involved in rifampin resistance. Comparison of RpoB sequences from pneumococcal recombinant isolates, viridans isolates, and type strains revealed a species-specific amino acid signature, which allowed it to be ascertained that recombinant RpoBs were originated in genetic interchanges with Streptococcus mitis and Streptococcus oralis. Antimicrob Agents Chemother. 2011 Jan;55(1):368-72. doi: 10.1128/AAC.00856-10. Epub 2010 Nov 1. 10.1128/AAC.00856-10 1098-6596 0066-4804 Antimicrobial agents and chemotherapy 21041504 http://hdl.handle.net/20.500.12105/8709 New species genetic approach to identify strains of mitis group streptococci that are donors of rifampin resistance to Streptococcus pneumoniae