2,607 results found
    1. Structural Biology and Molecular Biophysics

    Ambiguities in helical reconstruction

    Edward H Egelman
    While electron microscopic helical reconstruction is a powerful technique in structural biology, mistakes can be made in determining the helical symmetry, leading to structures that are artifactual.
    1. Structural Biology and Molecular Biophysics

    Structure and in situ organisation of the Pyrococcus furiosus archaellum machinery

    Bertram Daum et al.
    Using both electron cryo-tomography and helical reconstruction, the first structure of the entire archaellum machinery with an assembled filament has been determined, providing the structural basis for our understanding of archaeal motility.
    1. Structural Biology and Molecular Biophysics

    Cryo-EM structures of S-OPA1 reveal its interactions with membrane and changes upon nucleotide binding

    Danyang Zhang et al.
    GTP binding induces rearrangement of S-OPA1 assembly on membrane and thus triggers membrane remodeling with reduced curvature.
    1. Neuroscience

    FluoEM, virtual labeling of axons in three-dimensional electron microscopy data for long-range connectomics

    Florian Drawitsch et al.
    Methodology to annotate the multiple origins of axonal projections in dense electron microscopy data of mammalian nervous tissue without the need of chemical label conversion is reported.
    1. Structural Biology and Molecular Biophysics
    2. Cell Biology

    Crenactin forms actin-like double helical filaments regulated by arcadin-2

    Thierry Izoré et al.
    Close evolutionary relationship between eukaryotic F-actin and crenarchaeal crenactin protein is supported by a near-atomic cryoEM structure of double helical filaments, that are inhibited by arcadin-2 through binding to crenactin's hydrophobic groove.
    1. Genetics and Genomics

    Firefly genomes illuminate parallel origins of bioluminescence in beetles

    Timothy R Fallon et al.
    The first genomic view of beetle luciferase evolution indicates evolutionary independence of luciferase between fireflies and click-beetles, and provide valuable datasets which will accelerate the discovery of new biotechnological tools.
    1. Microbiology and Infectious Disease

    Distinct cytoskeletal proteins define zones of enhanced cell wall synthesis in Helicobacter pylori

    Jennifer A Taylor et al.
    The helical bacterium Helicobacter pylori patterns cell wall synthesis using two distinct cytoskeletal proteins, CcmA and MreB, to achieve its characteristic shape.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    Mechanisms of opening and closing of the bacterial replicative helicase

    Jillian Chase et al.
    Analysis of the Escherichia coli DnaB helicase•bacteriophage λ helicase loader (λP) complex provides insights into helicase opening, delivery to the origin and ssDNA entry, and closing in preparation for translocation.
    1. Chromosomes and Gene Expression
    2. Genetics and Genomics

    Two locus inheritance of non-syndromic midline craniosynostosis via rare SMAD6 and common BMP2 alleles

    Andrew T Timberlake et al.
    Epistatic interactions of rare loss of function mutations in SMAD6 and a common variant modifier near BMP2 are the most common cause of midline craniosynostosis in humans.
    1. Immunology and Inflammation

    Notch and TLR signaling coordinate monocyte cell fate and inflammation

    Jaba Gamrekelashvili et al.
    Notch signaling alters TLR-induced inflammation by skewing monocyte cell fate toward patrolling monocyte differentiation at the expense of macrophage cell fate.

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