4-Quinolone resistance mutations in the DNA gyrase of Escherichia coli clinical isolates identified by using the polymerase chain reaction.
AUTOR(ES)
Oram, M
RESUMO
Seven nalidixic acid-resistant clinical isolates of Escherichia coli were shown to carry resistance mutations in their gyrase A proteins. Six had serine-83 to leucine or tryptophan changes; the seventh had an aspartate-87 to valine substitution. The frequent occurrence of a mutation at serine-83 implies a key role for this residue in quinolone action.
ACESSO AO ARTIGO
http://www.pubmedcentral.nih.gov/articlerender.fcgi?artid=245014Documentos Relacionados
- Differences in genomic DNA sequences between pathogenic and nonpathogenic isolates of Entamoeba histolytica identified by polymerase chain reaction.
- DNA gyrase mutations in quinolone-resistant clinical isolates of Neisseria gonorrhoeae.
- Antagonism of wild-type and resistant Escherichia coli and its DNA gyrase by the tricyclic 4-quinolone analogs ofloxacin and S-25930 stereoisomers.
- Detection of Trypanosoma cruzi by DNA amplification using the polymerase chain reaction.
- Quantitation of human immunodeficiency virus DNA by using the polymerase chain reaction.
