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Osmotic regulation of biosynthesis of membrane-derived oligosaccharides in Escherichia coli.

作者信息

Kennedy E P, Rumley M K

机构信息

Department of Biological Chemistry, Harvard Medical School, Boston, Massachusetts 02115.

出版信息

J Bacteriol. 1988 Jun;170(6):2457-61. doi: 10.1128/jb.170.6.2457-2461.1988.

Abstract

The osmotic regulation of the biosynthesis of membrane-derived oligosaccharides (MDO) in strains UB1005 and DC2 of Escherichia coli K-12 was examined; this regulation was previously reported by Clark (J. Bacteriol. 161:1049-1053, 1985) to be different from that observed by Kennedy for other strains of E. coli (Proc. Natl. Acad. Sci. USA 79:1092-1095, 1982). Osmotic regulation of the synthesis of MDO in UB1005 and DC2 is in fact indistinguishable from that previously reported for other strains of E. coli, with maximum production of MDO occurring in the medium of lowest osmolarity. The report of Clark to the contrary was apparently based on the inadequate methods for the measurement of MDO employed in that study. MDO are localized in the periplasm of wild-type E. coli cells. However, strain DC2, selected for hypersensitivity to a range of antibiotics, released most of its MDO into the medium, apparently as a result of greater outer membrane permeability.

摘要

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本文引用的文献

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Osmotic regulation and the biosynthesis of membrane-derived oligosaccharides in Escherichia coli.
Proc Natl Acad Sci U S A. 1982 Feb;79(4):1092-5. doi: 10.1073/pnas.79.4.1092.
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