enow.com Web Search

Search results

  1. Results from the WOW.Com Content Network
  2. L-form bacteria - Wikipedia

    en.wikipedia.org/wiki/L-form_bacteria

    L-form bacteria, also known as L-phase bacteria, L-phase variants or cell wall-deficient bacteria (CWDB), are growth forms derived from different bacteria. They lack cell walls . [ 1 ] Two types of L-forms are distinguished: unstable L-forms , spheroplasts that are capable of dividing, but can revert to the original morphology, and stable L ...

  3. Cell wall - Wikipedia

    en.wikipedia.org/wiki/Cell_wall

    The cell wall is essential to the survival of many bacteria, although L-form bacteria can be produced in the laboratory that lack a cell wall. [38] The antibiotic penicillin is able to kill bacteria by preventing the cross-linking of peptidoglycan and this causes the cell wall to weaken and lyse. [ 37 ]

  4. Cell envelope - Wikipedia

    en.wikipedia.org/wiki/Cell_envelope

    The cell envelopes of the bacterial class of mollicutes do not have a cell wall. [5] The main pathogenic bacteria in this class are mycoplasma and ureaplasma. [5] L-form bacteria are strains bacteria that lack cell walls derived from bacteria that normally possess cell walls. [6]

  5. Bacterial cell structure - Wikipedia

    en.wikipedia.org/wiki/Bacterial_cell_structure

    Since the cell wall is required for bacterial survival, but is absent in some eukaryotes, several antibiotics (notably the penicillins and cephalosporins) stop bacterial infections by interfering with cell wall synthesis, while having no effects on human cells which have no cell wall, only a cell membrane.

  6. FtsZ - Wikipedia

    en.wikipedia.org/wiki/FtsZ

    L-form bacteria that lack a cell wall do not require FtsZ for division, which implies that bacteria may have retained components of an ancestral mode of cell division. [16] Much is known about the dynamic polymerization activities of tubulin and microtubules, but little is known about these activities in FtsZ.

  7. Cell (biology) - Wikipedia

    en.wikipedia.org/wiki/Cell_(biology)

    The cell wall acts to protect the cell mechanically and chemically from its environment, and is an additional layer of protection to the cell membrane. Different types of cell have cell walls made up of different materials; plant cell walls are primarily made up of cellulose, fungi cell walls are made up of chitin and bacteria cell walls are ...

  8. Spheroplast - Wikipedia

    en.wikipedia.org/wiki/Spheroplast

    In this screen devised by Eugene Dulaney, growing bacteria were exposed to test substances under hypertonic conditions. Inhibitors of cell wall synthesis caused growing bacteria to form spheroplasts. This screen enabled the discovery of fosfomycin, cephamycin C, thienamycin and several carbapenems. [1]

  9. Mycoplasma - Wikipedia

    en.wikipedia.org/wiki/Mycoplasma

    Mycoplasma is a genus of bacteria that, like the other members of the class Mollicutes, lack a cell wall, and its peptidoglycan, around their cell membrane. [1] The absence of peptidoglycan makes them naturally resistant to antibiotics such as the beta-lactam antibiotics that target cell wall synthesis.