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  1. Aug 31, 2023 · Escherichia coli. Gram Stain of Escherichia coli. Note gram-negative (pink) bacilli. Escherichia coli is shared under a CC BY license and was authored, remixed, and/or curated by LibreTexts.

  2. Dec 31, 2022 · Escherichia coli have served as important model organisms for over a century—used to elucidate key aspects of genetics, evolution, molecular biology, and pathogenesis. However, defining which strains actually belong to this species is erratic and unstable due to shifts in the characters and criteria used to distinguish bacterial species.

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  4. Type and morphology. E. coli is a gram-negative, facultative anaerobe, nonsporulating coliform bacterium. Cells are typically rod-shaped, and are about 2.0 μm long and 0.25–1.0 μm in diameter, with a cell volume of 0.6–0.7 μm 3.

  5. Mar 7, 2017 · We report 111 nonessential mutations impacting E. coli morphology, with nearly half of those genes being poorly annotated or uncharacterized. Further, these genes appear to be tightly linked to transport or redox processes within the cell.

    • Shawn French, Jean-Philippe Côté, Jonathan M. Stokes, Ray Truant, Eric D. Brown
    • 10.1128/mBio.01977-16
    • 2017
    • mBio. 2017 Mar-Apr; 8(2): e01977-16.
  6. Jul 18, 2017 · The results reveal that the cylindrical part of Escherichia coli is composed of multi-domain morphological structures. The length of the domains starts at 150 nm in newborn cells, and...

    • Sharareh Tavaddod, Hossein Naderi-Manesh
    • 2017
  7. Aug 31, 2023 · There are three basic shapes of bacteria: coccus, bacillus, and spiral. Based on planes of division, the coccus shape can appear in several distinct arrangements: diplococcus, streptococcus, tetrad, ….

  8. Jan 1, 2008 · E. coli is Gram-negative and its envelope has three layers: cytoplasmic membrane, peptidoglycan, and outer membrane. The peptidoglycan is rigid determining the rod shape. To a good approximation, the E. coli cell has hemispherical caps and a cylindrical section in between.