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Comparison of the polypeptide composition of Escherichia coli outer membranes prepared by two methods.

Authors
  • I Chopra
  • S W Shales
Publication Date
Oct 01, 1980
Source
PMC
Keywords
Disciplines
  • Biology
License
Unknown

Abstract

Escherichia coli outer membranes were prepared by centrifugation to equilibrium in sucrose gradients and then treated with Sarkosyl in the presence of ethylenediaminetetraacetate. The polypeptide profiles of the two outer membrane preparations were compared by two-dimensional polyacrylamide gel electrophoresis. The patterns obtained were not identical, and Sarkosyl removed several minor proteins from the outer membrane.

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