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. 1980 Aug;143(2):1019–1024. doi: 10.1128/jb.143.2.1019-1024.1980

Morphogenesis of the bacterial division septum: identification of potential sites of division in lkyD mutants of Salmonella typhimurium.

J C Fung, T J MacAlister, R A Weigand, L I Rothfield
PMCID: PMC294407  PMID: 7009540

Abstract

It previously has been shown that lkyD mutants of Salmonella typhimurium form large blebs of outer membrane over the septal and polar regions of dividing cells. To determine whether the outer membrane blebs are formed over potential sites of division even in the absence of septal ingrowth, lkyD strains were studied under conditions in which ingrowth of inner membrane and murein was prevented by inactivation of the envA gene product. In aseptate filaments of the LkyD EnvA strain, outer membrane blebs occurred with the usual frequency and were preferentially located over regions where new septa were formed when cell division was subsequently permitted to resume. The results indicate that the outer membrane blebs of the LkyD strain are markers for potential sites of cell division, implying that an alteration in association of outer membrane and murein exists in these sites before the initiation of septal ingrowth. This localized change in cell envelope organization is independent of the septation-inducing effects of the envA gene product.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

  1. Braun V., Rehn K., Wolff H. Supramolecular structure of the rigid layer of the cell wall of Salmonella, Serratia, Proteus, and Pseudomonas fluorescens. Number of lipoprotein molecules in a membrane layer. Biochemistry. 1970 Dec 22;9(26):5041–5049. doi: 10.1021/bi00828a001. [DOI] [PubMed] [Google Scholar]
  2. Cieśla Z., Bagdasarian M., Szczurkiewicz W., Przygońska M., Klopotowski T. Defective cell division in thermosensitive mutants of Salmonella typhimurium. Mol Gen Genet. 1972;116(2):107–125. doi: 10.1007/BF00582221. [DOI] [PubMed] [Google Scholar]
  3. Donachie W. D., Begg K. J. Growth of the bacterial cell. Nature. 1970 Sep 19;227(5264):1220–1224. doi: 10.1038/2271220a0. [DOI] [PubMed] [Google Scholar]
  4. Fung J., MacAlister T. J., Rothfield L. I. Role of murein lipoprotein in morphogenesis of the bacterial division septum: phenotypic similarity of lkyD and lpo mutants. J Bacteriol. 1978 Mar;133(3):1467–1471. doi: 10.1128/jb.133.3.1467-1471.1978. [DOI] [PMC free article] [PubMed] [Google Scholar]
  5. ROTHFIELD L., OSBORN M. J., HORECKER B. L. BIOSYNTHESIS OF BACTERIAL LIPOPOLYSACCHARIDE. II. INCORPORATION OF GLUCOSE AND GALACTOSE CATALYZED BY PARTICULATE AND SOLUBLE ENZYMES IN SALMONELLA. J Biol Chem. 1964 Sep;239:2788–2795. [PubMed] [Google Scholar]
  6. Rosenbusch J. P. Characterization of the major envelope protein from Escherichia coli. Regular arrangement on the peptidoglycan and unusual dodecyl sulfate binding. J Biol Chem. 1974 Dec 25;249(24):8019–8029. [PubMed] [Google Scholar]
  7. Schwarz U., Asmus A., Frank H. Autolytic enzymes and cell division of Escherichia coli. J Mol Biol. 1969 May 14;41(3):419–429. doi: 10.1016/0022-2836(69)90285-x. [DOI] [PubMed] [Google Scholar]
  8. Slater M., Schaechter M. Control of cell division in bacteria. Bacteriol Rev. 1974 Jun;38(2):199–221. doi: 10.1128/br.38.2.199-221.1974. [DOI] [PMC free article] [PubMed] [Google Scholar]
  9. Suzuki H., Nishimura Y., Yasuda S., Nishimura A., Yamada M., Hirota Y. Murein-lipoprotein of Escherichia coli: a protein involved in the stabilization of bacterial cell envelope. Mol Gen Genet. 1978 Nov 16;167(1):1–9. doi: 10.1007/BF00270315. [DOI] [PubMed] [Google Scholar]
  10. Weigand R. A., Vinci K. D., Rothfield L. I. Morphogenesis of the bacterial division septum: a new class of septation-defective mutants. Proc Natl Acad Sci U S A. 1976 Jun;73(6):1882–1886. doi: 10.1073/pnas.73.6.1882. [DOI] [PMC free article] [PubMed] [Google Scholar]

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