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Ribosomal efficiency and growth rates of freshly isolated Escherichia coli strains originating from the gastrointestinal tract
Author(s) -
Rang Camilla U,
Mikkola Riitta,
Molin Sören,
Conway Patricia L
Publication year - 1997
Publication title -
febs letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.593
H-Index - 257
eISSN - 1873-3468
pISSN - 0014-5793
DOI - 10.1016/s0014-5793(97)01341-0
Subject(s) - escherichia coli , gastrointestinal tract , microbiology and biotechnology , ribosomal rna , biology , biochemistry , gene
It has been previously reported that for natural Escherichia coli isolates from the ECOR collection, there were differences in the ribosomal efficiencies and there was a direct correlation between growth rate and the ribosome efficiency (R‐factor). The aim of this study was to determine whether strains freshly isolated (i.e. subcultured <5 times) from the gastrointestinal tract ecosystem also exhibited this correlation. Eleven E. coli and two Enterobacter spp. isolates from either humans, pigs, rats or a mammoth were investigated. Considerable variability in the R‐factor was noted using an in vitro translation assay, however no consistent correlation between the R‐factor and growth rate was noted.