4,063 results found
    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, Yaser Hashem ... Joachim Frank
    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, Vivek Singh ... Alexey Amunts
    Structural analysis of translating human mitoribosome illustrates elemental steps of translation in mitochondria.
    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, Christina M Zimanyi ... Rachelle Gaudet
    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. Structural Biology and Molecular Biophysics

    High-resolution structures of the actomyosin-V complex in three nucleotide states provide insights into the force generation mechanism

    Sabrina Pospich, H Lee Sweeney ... Stefan Raunser
    The cryo-EM structures of actomyosin-V, including a novel strongly bound post-rigor transition state, reveal a pronounced structural heterogeneity of myosin-V and the specific selection of the closed D-loop conformation of F-actin.
    1. Structural Biology and Molecular Biophysics
    2. Neuroscience

    Coupled ion binding and structural transitions along the transport cycle of glutamate transporters

    Grégory Verdon, SeCheol Oh ... Olga Boudker
    Crystal structures of an archaeal homologue of mammalian glutamate transporters in apo and ion-only bound outward- and inward-facing states reveal ion-coupled conformational changes supporting mechanisms of coupling, gating, and transport.
    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, Kevin D Whitley ... Klaus Schulten
    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. Biochemistry and Chemical Biology
    2. Chromosomes and Gene Expression

    METTL18-mediated histidine methylation of RPL3 modulates translation elongation for proteostasis maintenance

    Eriko Matsuura-Suzuki, Tadahiro Shimazu ... Shintaro Iwasaki
    METTL18 methylates histidine 245 of ribosomal protein RPL3, retards ribosome traversal at tyrosine codons, and thus ensures nascent protein folding for proteostasis maintenance.
    1. Computational and Systems Biology

    The structural connectome constrains fast brain dynamics

    Pierpaolo Sorrentino, Caio Seguin ... Andrew Zalesky
    The fast spreading of neural activity across the brain has a complex structure, imposed by the white-matter bundles.
    1. Structural Biology and Molecular Biophysics

    Structural dynamics determine voltage and pH gating in human voltage-gated proton channel

    Shuo Han, Sophia Peng ... Shizhen Wang
    Visualization of the real-time conformational transitions of the human voltage-gated proton channel hHv1 provided novel insights into how voltage and pH gradients modify the dynamic behaviors of channel structures to control proton flow across membrane.
    1. Structural Biology and Molecular Biophysics

    Robust membrane protein tweezers reveal the folding speed limit of helical membrane proteins

    Seoyoon Kim, Daehyo Lee ... Duyoung Min
    An exceedingly low speed limit was estimated for a helical hairpin formation by analyzing hours-long, incessant structural transitions.

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