23 results found
    1. Microbiology and Infectious Disease

    Factors essential for L,D-transpeptidase-mediated peptidoglycan cross-linking and β-lactam resistance in Escherichia coli

    Jean-Emmanuel Hugonnet et al.
    Production of the L,D-transpeptidase YcbB and elevated synthesis of the (p)ppGpp alarmone reveals a new mode of peptidoglycan polymerization that bypasses the D,D-transpeptidase activity of PBPs and leads to broad-spectrum β-lactam resistance in Escherichia coli.
    1. Biochemistry and Chemical Biology
    2. Microbiology and Infectious Disease

    Peptidoglycan precursor synthesis along the sidewall of pole-growing mycobacteria

    Alam García-Heredia et al.
    Peptidoglycan precursor synthesis occurs in both growing and non-growing regions of the mycobacterial cell surface.
    1. Microbiology and Infectious Disease

    Maturing Mycobacterium smegmatis peptidoglycan requires non-canonical crosslinks to maintain shape

    Catherine Baranowski et al.
    Polar elongating mycobacteria (Mycobacterium smegmatis) require specific cell wall chemistries, those catalyzed by targets of critical antibiotics, to maintain rod shape at aging sites of the bacillus.
    1. Microbiology and Infectious Disease

    Mechanisms of substrate recognition by a typhoid toxin secretion-associated muramidase

    Tobias Geiger et al.
    Biochemical analyses and the crystal structure of TtsA reveal fundamental insight into the mechanisms by which this muramidase recognizes its peptidoglycan substrate to facilitate typhoid toxin secretion.
    1. Microbiology and Infectious Disease

    Plasticity of Escherichia coli cell wall metabolism promotes fitness and antibiotic resistance across environmental conditions

    Elizabeth A Mueller et al.
    Environmental specialization of bacterial cell wall synthases influences intrinsic resistance to cell wall active antibiotics.
    1. Epidemiology and Global Health
    2. Microbiology and Infectious Disease

    Tuberculosis: Breaking down walls

    Moagi Tube Shaku, Bavesh Davandra Kana
    A better understanding of the mechanisms underpinning the growth of mycobacteria could help identify targets for new antibiotics.
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    1. Genetics and Genomics

    A regulatory pathway that selectively up-regulates elongasome function in the absence of class A PBPs

    Yesha Patel et al.
    Balanced peptidoglycan synthesis requires regulators, including sigma-I and WalKR, that coordinate the diffusive action of class A PBPs and the directional motion of the MreB-directed elongasome.
    1. Cell Biology
    2. Microbiology and Infectious Disease

    Flotillin-mediated membrane fluidity controls peptidoglycan synthesis and MreB movement

    Aleksandra Zielińska et al.
    Correct cell wall synthesis in bacteria depends on flotillin-mediated membrane fluidity.
    1. Microbiology and Infectious Disease
    2. Physics of Living Systems

    The transpeptidase PBP2 governs initial localization and activity of the major cell-wall synthesis machinery in E. coli

    Gizem Özbaykal et al.
    For initiation of cell-wall insertion, the cross-linking enzyme PBP2 stably binds to a component of the cell envelope that is different from MreB filaments.
    1. Microbiology and Infectious Disease

    Distinct cytoskeletal proteins define zones of enhanced cell wall synthesis in Helicobacter pylori

    Jennifer A Taylor et al.
    The helical bacterium Helicobacter pylori patterns cell wall synthesis using two distinct cytoskeletal proteins, CcmA and MreB, to achieve its characteristic shape.

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