4,443 results found
    1. Computational and Systems Biology
    2. Microbiology and Infectious Disease

    Operon mRNAs are organized into ORF-centric structures that predict translation efficiency

    David H Burkhardt et al.
    Operonic mRNAs in bacteria are comprised of ORF (open reading frame)-wide units of secondary structure, which are intrinsically distinct between adjacent ORFs and encode a rough blueprint for ORF-specific translation efficiency.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    Structures in multiple conformations reveal distinct transition metal and proton pathways in an Nramp transporter

    Aaron T Bozzi et al.
    Nramp-family transporters adapt a common fold to a novel mechanism in which the spatial and temporal separation of like-charge transition metal and proton co-substrates circumvents the expected electrostatic repulsion.
    1. Evolutionary Biology

    Myoglobin primary structure reveals multiple convergent transitions to semi-aquatic life in the world's smallest mammalian divers

    Kai He et al.
    Ancestral sequence reconstruction of an essential muscle protein involved in oxygen storage and transport accurately tracks secondary aquatic transitions in a speciose clade of insectivorous mammals.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    Ensemble cryo-EM uncovers inchworm-like translocation of a viral IRES through the ribosome

    Priyanka D Abeyrathne et al.
    An ensemble of cryo-EM structures reveals how eukaryotic elongation factor 2 positions the first codon of a viral mRNA for translation.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    Cryo-EM visualization of the ribosome in termination complex with apo-RF3 and RF1

    Jesper Pallesen et al.
    Cryo-electron microscopy has been used to provide a structural interpretation of the complete action cycle of release factor 3 during translation termination, which includes a coordinated sequence of interactions with a class-I release factor and the ribosome.
    1. Structural Biology and Molecular Biophysics

    Structural basis of mitochondrial translation

    Shintaro Aibara et al.
    Structural analysis of translating human mitoribosome illustrates elemental steps of translation in mitochondria.
    1. Chromosomes and Gene Expression

    An mRNA-binding channel in the ES6S region of the translation 48S-PIC promotes RNA unwinding and scanning

    Irene Díaz-López et al.
    The ES6S region of the small subunit ribosome makes a place for the threading and secondary structure unwinding of mRNA, which regulates genome-wide translation.
    1. Structural Biology and Molecular Biophysics

    Structural model for differential cap maturation at growing microtubule ends

    Juan Estévez-Gallego et al.
    The tubulin GTPase cycle structurally modulates the microtubule cap, causing lattice expansion, which is an intermediate state involved in phosphate release and regulatory signaling.
    1. Computational and Systems Biology
    2. Structural Biology and Molecular Biophysics

    Free-energy simulations reveal molecular mechanism for functional switch of a DNA helicase

    Wen Ma et al.
    Integration of structural bioinformatics and free-energy simulations reveals how a helicase switches its function from unwinding to rezipping DNA, during which a key metastable conformation is predicted and verified by single-molecule measurements.
    1. Structural Biology and Molecular Biophysics

    Hexameric and pentameric complexes of the ExbBD energizer in the Ton system

    Saori Maki-Yonekura et al.
    Crystallography and single particle cryo-EM reveal hexameric and pentameric structures of the ExbBD energizer in the Ton system and oligomeric transition, which provides a unique working mechanism and a new vision of dynamic membrane biology.

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