Binding of metallic ions to the outer membrane of Escherichia coli | Zendy

B. Hoyle | Zendy; Terry J. Beveridge | Zendy

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Binding of metallic ions to the outer membrane of Escherichia coli

Author(s) -

B. Hoyle,

Terry J. Beveridge

Publication year - 1983

Publication title -

applied and environmental microbiology

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.552

H-Index - 324

eISSN - 1070-6291

pISSN - 0099-2240

DOI - 10.1128/aem.46.3.749-752.1983

Subject(s) - bacterial outer membrane , escherichia coli , membrane , metal , metal ions in aqueous solution , chemistry , ion , biophysics , electron microscope , binding site , cell membrane , outer membrane efflux proteins , vesicle , crystallography , biology , biochemistry , physics , organic chemistry , optics , gene

The binding of metal ions by the outer membrane of Escherichia coli K-12 strain AB264 was investigated by using outer membrane obtained after Triton X-100 extraction of purified cell envelopes. Binding studies, conducted under saturating conditions, indicated a selective trapping of certain metallic ions. Low-dose electron microscopy of metal-loaded samples revealed an aggregative deposition of lead on one surface of the membrane which suggests that at least one distinctive binding site is asymmetrically arranged in these outer membrane vesicles.

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