32 results found
    1. Structural Biology and Molecular Biophysics

    Structural basis of ribosomal peptide macrocyclization in plants

    Joel Haywood, Jason W Schmidberger ... Joshua S Mylne
    The first crystal structure of an active plant asparaginyl endopeptidase reveals a tetrahedral intermediate state in its active site, which may help to explain why these enzymes have been independently recruited to perform peptide macrocyclization.
    1. Biochemistry and Chemical Biology
    2. Microbiology and Infectious Disease

    Peptidoglycan precursor synthesis along the sidewall of pole-growing mycobacteria

    Alam García-Heredia, Amol Arunrao Pohane ... M Sloan Siegrist
    Peptidoglycan precursor synthesis occurs in both growing and non-growing regions of the mycobacterial cell surface.
    1. Biochemistry and Chemical Biology

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

    Víctor M Hernández-Rocamora, Natalia Baranova ... Waldemar Vollmer
    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. Microbiology and Infectious Disease

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

    Jean-Emmanuel Hugonnet, Dominique Mengin-Lecreulx ... Michel Arthur
    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

    High-throughput Automated Muropeptide Analysis (HAMA) Reveals Peptidoglycan Composition of Gut Microbial Cell Walls

    Ya-Chen Hsu, Pin-Rui Su ... Cheng-Chih Hsu
    Revised
    Reviewed Preprint v2
    Updated
    • Valuable
    • Incomplete
    1. Microbiology and Infectious Disease

    A mutant Escherichia coli that attaches peptidoglycan to lipopolysaccharide and displays cell wall on its surface

    Marcin Grabowicz, Dorothee Andres ... Thomas J Silhavy
    A single mutation in Escherichia coli connects two essential cell envelope assembly pathways and confers vancomycin resistance by displaying molecular decoys at the cell surface.
    1. Microbiology and Infectious Disease

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

    Jennifer A Taylor, Benjamin P Bratton ... Nina R Salama
    The helical bacterium Helicobacter pylori patterns cell wall synthesis using two distinct cytoskeletal proteins, CcmA and MreB, to achieve its characteristic shape.
    1. Microbiology and Infectious Disease

    Peptidoglycan-tethered and free forms of the Braun lipoprotein are in dynamic equilibrium in Escherichia coli

    Yucheng Liang, Jean-Emmanuel Hugonnet ... Michel Arthur
    The Braun lipoprotein is tethered to peptidoglycan independently from the insertion of newly-synthesized peptidoglycan subunits into the expanding cell wall generating a dynamic equilibrium between free and bound protein forms.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    Allosteric cooperation in β-lactam binding to a non-classical transpeptidase

    Nazia Ahmad, Sanmati Dugad ... Pankaj Kumar
    Allosteric mechanism of dual β-lactam binding in L,D-transpeptidase from Mycobacterium tuberculosis.
    1. Biochemistry and Chemical Biology
    2. Physics of Living Systems

    Direct measurement of the mechanical work during translocation by the ribosome

    Tingting Liu, Ariel Kaplan ... Carlos J Bustamante
    ‘Optical tweezers’ measurements of single ribosomes and single mRNA molecules show that the translation rate depends exponentially on the applied force, and suggests that the ribosome functions as a Brownian ratchet.

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