منابع مشابه
Mercury resistance (mer) operons in enterobacteria.
Mercury resistance is found in many genera of bacteria. Common amongst enterobacteria are transposons related to Tn21, which is both mercuric ion- and streptomycin-/spectinomycin- and sulphonamide-resistant. Other Tn21-related transposons often have different antibiotic resistances compared with Tn21, but share many non-antibiotic-resistance genes with it. In this article we discuss possible me...
متن کاملTransferable drug resistance in enterobacteria isolated from urban infants.
Antibiotic-resistant enterobacteria, the vast majority of which carried transmissible R factors, were isolated from 81 out of a total of 100 healthy infants. There was surprisingly little correlation between previous antibacterial therapy and the resistant enterobacterial flora.
متن کاملSynonymous substitution rates in enterobacteria.
It has been shown previously that the synonymous substitution rate between Escherichia coli and Salmonella typhimurium is lower in highly than in weakly expressed genes, and it has been suggested that this is due to stronger selection for translational efficiency in highly expressed genes as reflected in their greater codon usage bias. This hypothesis is tested here by comparing the substitutio...
متن کاملA between-species comparison of antimicrobial resistance in enterobacteria in fecal flora.
Enterobacteria in fecal flora are often reported to be highly resistant. Escherichia coli is the main species; resistance data on other species are rare. To assess the effect of the host's environment, antimicrobial resistance was determined in fecal species of the family Enterobacteriaceae from three populations: healthy people (HP)(n = 125) with no exposure to antimicrobials for 3 months prec...
متن کاملMutagenic DNA repair in enterobacteria.
Sixteen species of enterobacteria have been screened for mutagenic DNA repair activity. In Escherichia coli, mutagenic DNA repair is encoded by the umuDC operon. Synthesis of UmuD and UmuC proteins is induced as part of the SOS response to DNA damage, and after induction, the UmuD protein undergoes an autocatalytic cleavage to produce the carboxy-terminal UmuD' fragment needed for induced mutag...
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ژورنال
عنوان ژورنال: Jornal Brasileiro de Patologia e Medicina Laboratorial
سال: 2016
ISSN: 1676-2444
DOI: 10.5935/1676-2444.20160048