Modified peptidoglycan chemical composition in shape-altered Escherichia coli
Article Abstract:
A specific fourfold increase in the tetra-tetra-tetra trimer in dividing cocci of Escherichia coli was gleaned from an analysis of peptidoglycan (PG) synthesis and its fine chemical composition of the mutants. This dramatic increase suggests a difference in biochemical composition of lateral and septal wall PG. Findings showed that PG synthesis exists only in the cell cycle phase corresponding to cell septation and this was remarkably reduced during the phase corresponding to lateral wall elongation.
Publication Name: Microbiology
Subject: Biological sciences
ISSN: 1350-0872
Year: 1996
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Growth of the stress-bearing and shape-maintaining murein sacculus of Escherichia coli
Article Abstract:
The cell wall of bacteria must be reinforced to enable it to resist the intracellular pressure of certain atmospheres and to maintain shape. The murein (peptidoglycan) of eubacteria and the pseudomurein of archaebacteria are analogous structures. Particular muropeptides are described and the synthesis of the murein sacculus is undertaken. A discussion on murein metabolism during growth is presented, and the morphogenesis of E. Coli is described.
Publication Name: Microbiology and Molecular Biology Reviews
Subject: Biological sciences
ISSN: 1092-2172
Year: 1998
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A hypothetical holoenzyme involved in the replication of the murein sacculus of Escherichia coli
Article Abstract:
A safe and accurate mechanism for the replication of the murein sacculus of Escherichia coli into two daughter sacculi during the cell cycle is described in a hypothetical model. Murein is the stress-bearing structure of a bacterium that guarantees its mechanical stability and shape. The model proposes that a multienzyme complex comprised of murein hydrolases and synthase dimers copies the existing murein sacculus that serves as a template.
Publication Name: Microbiology
Subject: Biological sciences
ISSN: 1350-0872
Year: 1996
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