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. 1985 Nov;50(2):483–487. doi: 10.1128/iai.50.2.483-487.1985

Actinlike material in Pseudomonas aeruginosa.

R S Berk, M Moon, R Higbee, C Cramer, A Roher, M Weis, L Hazlett
PMCID: PMC261979  PMID: 3932210

Abstract

Actinlike material was obtained from disrupted Pseudomonas aeruginosa cells by a modification of the method of Hancock and Nikaido (J. Bacteriol. 136:381-390) for isolating outer membrane vesicles. Pelleted membranes were dissolved in Laemmli sample buffer and electrophoresed in parallel lanes with purified rabbit skeletal muscle actin. The bacterial preparation migrated similarly to rabbit skeletal muscle actin. A doublet band was detectable by affinity-purified antiactin antibody in a passive transfer immunoblot. Molecular weight of the actinlike protein doublet was 60,000 to 63,000 as determined by linear regression analysis of Bio-Rad low-molecular-weight standards run on sodium dodecyl sulfate-polyacrylamide gel electrophoresis. Transmission electron microscopy of the actinlike material in high salt concentrations revealed 10- to 14-nm filaments of various lengths. Despite its ability to form filaments and to react with a polyclonal rabbit antiactin antibody, the bacterial filaments did not bind the S-1 fragment of heavy meromyosin.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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