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  • Title: Isolation of outer membrane proteins of Escherchia coli and their characterization on polyacrylamide gel.
    Author: Uemura J, Mizushima S.
    Journal: Biochim Biophys Acta; 1975 Dec 01; 413(2):163-76. PubMed ID: 1103976.
    Abstract:
    Proteins from the outer membrane of Escherichia coli were studied on a ureadodecyl sulfate polyacrylamide gel by electrophoresis. A polyacrylamide gel containing sodium dodecyl sulfate and urea gave an excellent resolution of outer membrane proteins. Seventeen protein bands were reproducibly observed on a gel. By use of Sephadex G-200, DEAE-cellulose and polyacrylamide gel, eight proteins were purified to near homogeneity. Five of them were found to be heat-modifiable proteins. The behavior of these purified proteins was studied on a polyacrylamide gel under three different electrophoretic conditions, which had been used for the analysis of cell envelope proteins. Thus correspondence was made between these purified proteins and envelope proteins reported by other investigators.
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