Prevalence and distribution of R plasmid mediated beta-lactamases in Enterobacteriaceae.
290 ampicillin - resistant clinical isolates of various genera of Enterobacteriaceae were collected. 223 our of 290 isolates produced beta-lactamases: 95 of these resulted R plasmid mediated. The predominant R plasmid beta-lactamase was the TEM-1 enzyme. TEM-2 and SHV-1 enzymes were also produced.
D000667:Ampicillin / Q000494:pharmacology; D003470:Culture Media; D004755:Enterobacteriaceae / Q000187:drug effects / Q000201:enzymology* / Q000235:genetics; D004926:Escherichia coli / Q000201:enzymology; D007525:Isoelectric Focusing; D011815:R Factors; D001618:beta-Lactamases / Q000235:genetics / Q000378:metabolism*
D003470:Culture Media; D000667:Ampicillin; D001618:beta-Lactamases