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Comparison of SDS–PAGE protein patterns with other typing methods for investigating the epidemiology of ‘Klebsiella aerogenes’

Published online by Cambridge University Press:  15 May 2009

M. Costas ,
B. Holmes  and
L. L. Sloss
M. Costas
Affiliation:
National Collection of Type Cultures, Central Public Health Laboratory, London NW9 5HT, UK
B. Holmes
Affiliation:
National Collection of Type Cultures, Central Public Health Laboratory, London NW9 5HT, UK
L. L. Sloss
Affiliation:
National Collection of Type Cultures, Central Public Health Laboratory, London NW9 5HT, UK
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Twenty–four cultures comprising 20 clinical isolates of ‘Klebsiella aerogenes’ from two hospitals, a reference strain of ‘K. aerogenes’ and the type strains of three other Klebsiella species, were characterized by one–dimensional sodium dodecyl sulphate–polyacrylamide gel electrophoresis (SDS–PAGE) of whole–cell proteins. The protein patterns were highly reproducible and were used as the basis of a numerical analysis which divided the clinical isolates into 12 protein types. Comparison with established typing methods indicated that the level of discrimination of SDS–PAGE was similar to that achieved with conventional typing methods but the strains were grouped differently. Protein typing sub–divided five serotype K3 isolates that could also be distinguished by phage typing. Conversely, three strains of protein type 11 were clearly distinguishable by both serotyping and phage typing. We conclude that high–resolution SDS–PAGE of proteins provides an effective adjunct to other methods for typing isolates of ‘K. aerogenes’.

Type
Research Article
Information
Epidemiology & Infection , Volume 104 , Issue 3 , June 1990 , pp. 455 - 465
Copyright
Copyright © Cambridge University Press 1990

References

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