1.
Genet Mol Res
; 13(1): 716-22, 2014 Jan 29.
Article
de Anglais
| MEDLINE
| ID: mdl-24615036
RÉSUMÉ
The mass profiles of cell-free extracts of 180 commensal and pathogenic strains of Escherichia coli were determined by MALDI-TOF mass spectrometry (MS). While some peaks were highly conserved in all E. coli, several peaks occurred only in some strains, showing heterogeneity among them. We did not detect strain-specific peaks for any of the E. coli categories tested. However, review of the fully conserved and the variable peaks suggested that MALDI-TOF MS has the potential to distinguish commensal and uropathogenic E. coli strains. Additionally, eight Shigella sonnei isolates were tested and found to be indistinguishable from E. coli by MALDI-TOF MS under the test conditions.