37 results found
    1. Genetics and Genomics
    2. Microbiology and Infectious Disease

    Arrayed CRISPRi and quantitative imaging describe the morphotypic landscape of essential mycobacterial genes

    Timothy J de Wet et al.
    A high-throughput functional genomics approach combining inducible CRISPR-interference and quantitative imaging yields an atlas of 'phenoprints' to guide gene function assignments, identify metabolic pathway-specific morphotypes, and inform antibiotic mechanism-of-action studies.
    1. Structural Biology and Molecular Biophysics

    Fidaxomicin jams Mycobacterium tuberculosis RNA polymerase motions needed for initiation via RbpA contacts

    Hande Boyaci et al.
    Cryo-electron microscopy structures show how the clinically used antimicrobial fidaxomicin binds and inhibits Mycobacterium tuberculosis RNA polymerase by acting like a doorstop to jam the enzyme in an open conformation via the general transcription factor RbpA.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    Structure and function of the mycobacterial transcription initiation complex with the essential regulator RbpA

    Elizabeth A Hubin et al.
    The essential mycobacterial transcription factor RbpA interacts with promoter DNA and cooperates with another essential transcription factor, CarD, to stimulate the formation of an intermediate leading to the open promoter complex.
    1. Biochemistry and Chemical Biology

    Membrane-partitioned cell wall synthesis in mycobacteria

    Alam García-Heredia et al.
    Mycobacteria employ plasma membrane compartments to organize their cell wall synthesis, and the finalized cell wall compartmentalizes the plasma membrane to promote an environment conducive to its own synthesis.
    1. Microbiology and Infectious Disease

    A single regulator NrtR controls bacterial NAD+ homeostasis via its acetylation

    Rongsui Gao et al.
    Functional definition of NrtR and the discovery of its acetylation represents a first paradigm for linking protein acetylation to bacterial central NAD+ metabolism.
    1. Evolutionary Biology
    2. Microbiology and Infectious Disease

    Ribosomal mutations promote the evolution of antibiotic resistance in a multidrug environment

    James E Gomez et al.
    Mutations in several components of a bacterial ribosome are shown to broadly decrease antibiotic and stress sensitivity, and readily accessible reversion mutations allow these ribosomal mutations to serve as stepping stones to high level antibiotic resistance.
    1. Microbiology and Infectious Disease

    A conserved cell division protein directly regulates FtsZ dynamics in filamentous and unicellular actinobacteria

    Félix Ramos-León et al.
    Identification of a novel regulator that directly influences the assembly and function of the cell division machinery in industrially and medically important bacteria.
    1. Structural Biology and Molecular Biophysics

    The structure of the endogenous ESX-3 secretion system

    Nicole Poweleit et al.
    The structure of the endogenous ESX-3 secretion system reveals a highly coordinated inner membrane complex and suggests a mechanism for the regulated secretion of ESX substrates.
    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.

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