1,387 results found
    1. Structural Biology and Molecular Biophysics

    Coil-to-α-helix transition at the Nup358-BicD2 interface activates BicD2 for dynein recruitment

    James M Gibson, Heying Cui ... Chunyu Wang
    A cargo recognition α-helix was identified in Nup358, which is required for activation of a dynein-dependent transport pathway that is essential for brain development.
    1. Structural Biology and Molecular Biophysics
    2. Chromosomes and Gene Expression

    Mechanism for priming DNA synthesis by yeast DNA Polymerase α

    Rajika L Perera, Rubben Torella ... Luca Pellegrini
    The details of how the enzyme DNA polymerase α initiates the polymerization of nucleotides in DNA replication, a critical step in the synthesis of new chromosomal DNA, have been revealed in atomic detail.
    1. Structural Biology and Molecular Biophysics

    α/β coiled coils

    Marcus D Hartmann, Claudia T Mendler ... Birte Hernandez Alvarez
    Simple insertions switch α-helical coiled coils into a novel fibrous protein fold that is periodically interspersed with short β-strands.
    1. Structural Biology and Molecular Biophysics

    Allosteric signalling in the outer membrane translocation domain of PapC usher

    Irene Farabella, Thieng Pham ... Maya Topf
    Input from computational models has enabled the detection of allosteric communication that modulates the gating mechanism of a bacterial outer-membrane protein.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    Structural insight into toxin secretion by contact-dependent growth inhibition transporters

    Jeremy Guerin, Istvan Botos ... Susan K Buchanan
    Structures of CdiB outer membrane transporters reveal the channel-gating mechanism for the secretion of large bacterial toxins.
    1. Structural Biology and Molecular Biophysics

    Mechanism of the cadherin–catenin F-actin catch bond interaction

    Amy Wang, Alexander R Dunn, William I Weis
    Deleting the first helix of the α-catenin actin-binding domain results in a slip bond interaction between the cadherin–catenin complex and F-actin, such that the binding interaction is stable at low force.
    1. Structural Biology and Molecular Biophysics
    2. Cell Biology

    9Å structure of the COPI coat reveals that the Arf1 GTPase occupies two contrasting molecular environments

    Svetlana O Dodonova, Patrick Aderhold ... John A G Briggs
    A molecular model of the assembled COPI coat, determined by cryo-electron tomography of an in vitro reconstituted budding reaction, reveals details of interactions mediating coat assembly and shows the binding site of ArfGAP2.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    The force-sensing peptide VemP employs extreme compaction and secondary structure formation to induce ribosomal stalling

    Ting Su, Jingdong Cheng ... Roland Beckmann
    The structure of the VemP-stalled ribosome reveals a helix-double turn-helix conformation of the nascent chain within the ribosomal tunnel, illustrating how secondary structure formation directly at the peptidyltransferase center of the ribosome can induce translational arrest.
    1. Structural Biology and Molecular Biophysics

    Molecular principles of assembly, activation, and inhibition in epithelial sodium channel

    Sigrid Noreng, Richard Posert ... Isabelle Baconguis
    The in-depth structural and functional work provide a deeper understanding as to how the epithelial sodium channel is a heteromeric ion channel that is regulated by Na+ and proteolysis.
    1. Microbiology and Infectious Disease
    2. Structural Biology and Molecular Biophysics

    Membrane insertion of α-xenorhabdolysin in near-atomic detail

    Evelyn Schubert, Ingrid R Vetter ... Stefan Raunser
    Cryo-EM and X-ray structures of α-xenorhabdolysin in soluble and pore form of Xenorhabdus nematophila give novel insights into the mechanism of action of bi-component α-pore-forming toxins.

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