55 results found
    1. Microbiology and Infectious Disease
    2. Structural Biology and Molecular Biophysics

    Structural intermediates observed only in intact Escherichia coli indicate a mechanism for TonB-dependent transport

    Thushani D Nilaweera, David A Nyenhuis, David S Cafiso
    Pulse electron paramagnetic resonance on intact Escherichia coli reveals a substrate-induced structural transition in BtuB, the vitamin B12 transporter, which is not seen in reconstituted membranes and indicates a mechanism of transport.
    1. Computational and Systems Biology

    A convolutional neural network for the prediction and forward design of ribozyme-based gene-control elements

    Calvin M Schmidt, Christina D Smolke
    Machine learning has been applied to develop predictive models for designing RNA gene-control elements with targeted gene-regulatory activities.
    1. Microbiology and Infectious Disease
    2. Structural Biology and Molecular Biophysics

    A Vibrio cholerae viral satellite maximizes its spread and inhibits phage by remodeling hijacked phage coat proteins into small capsids

    Caroline M Boyd, Sundharraman Subramanian ... Kimberley D Seed
    A phage parasite encodes an external scaffolding protein to pirate and rearrange phage-encoded coat proteins to more efficiently transfer the phage parasite genome to new hosts and limit phage production.
    1. Chromosomes and Gene Expression
    2. Microbiology and Infectious Disease

    A low Smc flux avoids collisions and facilitates chromosome organization in Bacillus subtilis

    Anna Anchimiuk, Virginia S Lioy ... Stephan Gruber
    Bacterial chromosome folding by DNA loop extrusion is here shown to rely on avoidance of SMC collisions by low SMC abundance, clustering of loading sites, efficient translocation, and rare unloading.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    Synergy between RecBCD subunits is essential for efficient DNA unwinding

    Rani Zananiri, Omri Malik ... Ariel Kaplan
    A new optical tweezers assay sheds light on the mechanism of cooperation and force generation by the subunits of RecBCD, critical for the repair of double strand breaks in bacteria.
    1. Microbiology and Infectious Disease

    Glutamine synthetase mRNA releases sRNA from its 3′UTR to regulate carbon/nitrogen metabolic balance in Enterobacteriaceae

    Masatoshi Miyakoshi, Teppei Morita ... Kan Tanaka
    Under nitrogen limitation, Salmonella and Escherichia coli express a messenger RNA to translate glutamine synthetase, and concomitantly the messenger RNA produces a small RNA from its 3′ end to inhibit the translation of 2-oxoglutarate dehydrogenase of the TCA cycle.
    1. Microbiology and Infectious Disease

    A bacterial regulatory uORF senses multiple classes of ribosome-targeting antibiotics

    Gabriele Baniulyte, Joseph T Wade
    Not revised
    Reviewed Preprint v1
    • Important
    • Solid
    1. Biochemistry and Chemical Biology
    2. Cell Biology

    Guanidine hydrochloride reactivates an ancient septin hetero-oligomer assembly pathway in budding yeast

    Courtney R Johnson, Marc G Steingesser ... Michael A McMurray
    A naturally-occurring small molecule acts as a chemical chaperone in vivo to alter the folding of a budding yeast septin and promote an oligomerization pathway that was lost during evolution.
    1. Microbiology and Infectious Disease

    A chimeric nuclease substitutes a phage CRISPR-Cas system to provide sequence-specific immunity against subviral parasites

    Zachary K Barth, Maria HT Nguyen, Kimberley D Seed
    Horizontal transfer of a sequence-specific DNA-binding domain allows a virus to destroy its subviral parasite and overcome parasite-mediated restriction.
    1. Structural Biology and Molecular Biophysics

    Functional roles of Mg2+ binding sites in ion-dependent gating of a Mg2+ channel, MgtE, revealed by solution NMR

    Tatsuro Maruyama, Shunsuke Imai ... Masanori Osawa
    Nuclear magnetic resonance analysis revealed the structural and dynamical changes in MgtE during the channel closure caused by the cooperative Mg2+-binding, which had remained undescribed only by a static crystal structure.

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