Screening 469 Escherichia coli Isolates Form South East of Iran for Tellurite Resistance Phenotype
نویسندگان
چکیده
منابع مشابه
Chromosomal instability in enterohaemorrhagic Escherichia coli O157:H7: impact on adherence, tellurite resistance and colony phenotype
Tellurite (Tel) resistant enterohaemorrhagic Escherichia coli (EHEC) O157:H7 is a global pathogen. In strain EDL933 Tel resistance (Tel(R) ) is encoded by duplicate ter cluster in O islands (OI) 43 and 48, which also harbour iha, encoding the adhesin and siderophore receptor Iha. We identified five EHEC O157:H7 strains that differentiate into large (L) colonies and small (S) colonies with high ...
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Tellurite (TeO3(2-)) is highly toxic toward Escherichia coli (MIC, approximately 1 microgram ml-1). Mutants (Tel) that were resistant to low levels of TeO3(2-) (MIC, approximately 10 micrograms ml-1) and collaterally resistant to arsenate were isolated. These Tel mutants were unable to grow on media containing low levels of Pi, which supported growth of the parent strain. When grown at much hig...
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Tellurite and selenate reductase activities were identified in extracts of Escherichia coli. These activities were detected on non-denaturing polyacrylamide gels using an in situ methyl viologen activity-staining technique. The activity bands produced from membrane-protein extracts had the same RF values as those of nitrate reductases (NRs) A and Z. Tellurite and selenate reductase activities w...
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ژورنال
عنوان ژورنال: Journal of Medical Sciences
سال: 2005
ISSN: 1682-4474
DOI: 10.3923/jms.2005.316.319