Effect of growth conditions on electrophysical properties of Rhodobacter capsulatus PG cells

Electrophysical characteristics of cells of the phototrophic bacterium Rhodobacter capsulatus PG grown in complete Hutner medium in light or dark were found to differ depending on the composition of their lipopolysaccharides (LPS). Under dark cultivation, the cells synthesized LPS with a shortened s...

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Published inMicrobiology (New York) Vol. 77; no. 5; pp. 568 - 571
Main Authors Zubova, S. V., Ivanov, A. Yu, Prokhorenko, I. R.
Format Journal Article
LanguageEnglish
Published Dordrecht SP MAIK Nauka/Interperiodica 01.10.2008
Subjects
Biomedical and Life Sciences
Experimental Articles
Life Sciences
Medical Microbiology
Microbiology
Rhodobacter capsulatus
growth conditions
lipopolysaccharide
electrophysical properties
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Summary:Electrophysical characteristics of cells of the phototrophic bacterium Rhodobacter capsulatus PG grown in complete Hutner medium in light or dark were found to differ depending on the composition of their lipopolysaccharides (LPS). Under dark cultivation, the cells synthesized LPS with a shortened structure that determined the electrophoretic properties of cell surfaces. The observed decrease in the effective high-frequency electroconductivity of the dark-grown cells is assumed to be due to a decrease in the intracellular K + concentration resulting from increased permeability of cytoplasmic membranes of the cells grown under these conditions.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:0026-2617
1608-3237
DOI:10.1134/S0026261708050093