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  • Title: Numerical analysis of electrophoretic protein patterns of Morganella morganii strains from faeces, wound, urine and other clinical sources.
    Author: Costas M, Holmes B, Wood AC.
    Journal: J Appl Bacteriol; 1990 Sep; 69(3):426-38. PubMed ID: 2246146.
    Abstract:
    Sixty-five strains of Morganella morganii (mainly of human origin) were characterized by one-dimensional SDS-PAGE of cellular proteins. The strains came from various countries; 13 were from stools (including one from a toucan), 13 from wounds, 11 from urine, five from blood (including one from a snake), five from the respiratory tract (four sputum, one lung), 12 from miscellaneous sources and six from unknown sources. The protein patterns, which contained 45 to 50 discrete bands, were highly reproducible. The patterns of 67 M. morganii cultures plus those of the type strains of seven Proteus and Providencia species were used as the basis for two numerical analyses. In the first, which included all the protein bands, the M. morganii strains formed 21 clusters at the 91% S level. In the second analysis, in which the principal protein bands (in the 31.6-43.2 kDa range) were excluded, the 67 M. morganii cultures formed a single cluster at the 80% S level distinct from the seven Proteus and Providencia reference strains. We conclude that high resolution PAGE combined with computerized analysis of protein patterns provides the basis for typing clinical strains of M. morganii. Reference strains of each of the 21 PAGE types identified are available from NCTC for inclusion in future studies.
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