32 results found
    1. Computational and Systems Biology
    2. Structural Biology and Molecular Biophysics

    Energetics and conformational pathways of functional rotation in the multidrug transporter AcrB

    Yasuhiro Matsunaga et al.
    High-performance computing simulations reveal how two remote sites in the multidrug transporter AcrB work together for drug extrusion using the proton-motive force.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    Coupling of remote alternating-access transport mechanisms for protons and substrates in the multidrug efflux pump AcrB

    Thomas Eicher et al.
    A transport mechanism is uncovered in the major drug-efflux system in E. coli involving two remote alternating-access conformational cycles, which could provide the basis for the development of allosteric inhibitors against multidrug resistance.
    1. Structural Biology and Molecular Biophysics

    An allosteric transport mechanism for the AcrAB-TolC multidrug efflux pump

    Zhao Wang et al.
    The tripartite drug efflux pump AcrA-AcrB-TolC, representative of a wide group of pumps from Gram-negative bacteria, enters a transport-competent state through long-distance conformational changes that switch the channel from a closed to an open state.
    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. Developmental Biology

    Patched1 and Patched2 inhibit Smoothened non-cell autonomously

    Brock Roberts et al.
    Ptch1/2 can lower the sensitivity of Smo to activation by Shh via the secretion of a sterol precursor.
    1. Cell Biology
    2. Microbiology and Infectious Disease

    ISG15 counteracts Listeria monocytogenes infection

    Lilliana Radoshevich et al.
    The induction of ISG15 during bacterial infection can be independent of Type I Interferons and leads to an increase in the secretion of cytokines known to be critical for bacterial clearance.
    1. Evolutionary Biology

    Robust and accurate prediction of residue–residue interactions across protein interfaces using evolutionary information

    Sergey Ovchinnikov et al.
    Co-evolving residue pairs in the different components of a protein complex almost always make contact across the protein–protein interface, thus providing powerful restraints for the modeling of protein complexes.
    1. Microbiology and Infectious Disease

    The anti-tubercular drug delamanid as a potential oral treatment for visceral leishmaniasis

    Stephen Patterson et al.
    Biological and pharmacokinetic studies indicate that the anti-tubercular drug, delamanid, could be repurposed for the treatment of visceral leishmaniasis.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    Regulation of multispanning membrane protein topology via post-translational annealing

    Reid C Van Lehn et al.
    Coarse-grained modeling reveals a new mechanism for multispanning membrane protein topogenesis, in which misintegrated configurations of the proteins undergo post-translational annealing to reach final, fully integrated multispanning topologies.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    Conformational dynamics of the nucleotide binding domains and the power stroke of a heterodimeric ABC transporter

    Smriti Mishra et al.
    The conformational cycle of an ABC heterodimeric transporter reveals a divergence in the structural mechanism of ABC exporters.

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