48 results found
    1. Structural Biology and Molecular Biophysics

    An expanded allosteric network in PTP1B by multitemperature crystallography, fragment screening, and covalent tethering

    Daniel A Keedy et al.
    By measuring how multiple conformations shift in response to temperature, a new allosteric binding site is discovered for the phosphatase PTP1B.
    1. Microbiology and Infectious Disease

    Coordination of peptidoglycan synthesis and outer membrane constriction during Escherichia coli cell division

    Andrew N Gray et al.
    The protein CpoB regulates PBP1B activity in response to the Tol energy state, which facilitates feedback and synchronicity between envelope constriction processes during Gram-negative bacterial cell division.
    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. 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. Microbiology and Infectious Disease

    Global phenotypic profiling identifies a conserved actinobacterial cofactor for a bifunctional PBP-type cell wall synthase

    Joel W Sher et al.
    A broadly useful phenotypic profiling dataset was generated and used to identify a cofactor required for a polar cell wall synthase in Corynebacterium glutamicum that is conserved throughout the Actinobacteria.
    1. Cell Biology
    2. Microbiology and Infectious Disease

    Class-A penicillin binding proteins do not contribute to cell shape but repair cell-wall defects

    Antoine Vigouroux et al.
    Class-A penicillin-binding proteins are dispensable for rod-like cell-shape but essential for mechanical integrity by sensing and repairing cell-wall defects locally, as investigated in the model system Escherichia coli.
    1. Cell Biology
    2. Computational and Systems Biology

    EGF-dependent re-routing of vesicular recycling switches spontaneous phosphorylation suppression to EGFR signaling

    Martin Baumdick et al.
    Plasticity arising from autocatalytic receptor activation coexists with robustness in ligand responsiveness only by differential endosomal sorting of spontaneous and ligand-activated EGFR as distinct molecular states.
    1. Biochemistry and Chemical Biology

    Real-time monitoring of peptidoglycan synthesis by membrane-reconstituted penicillin-binding proteins

    Víctor M Hernández-Rocamora et al.
    The synthesis of bacterial cell wall peptidoglycan was reconstituted in lipid bilayers and detected by a novel Förster resonance energy transfer real-time assay.
    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.

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