113 results found
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    Mechanism of ribosome rescue by ArfA and RF2

    Gabriel Demo et al.
    Cryo-EM structures reveal the structural dynamics of ArfA*RF2-mediated rescue of stalled ribosomes.
    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 et al.
    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. Genetics and Genomics

    Novel genetic loci affecting facial shape variation in humans

    Ziyi Xiong et al.
    A comprehensive genome scan of 18,000 multi-ethnic individuals with 3-dimensional facial images highlighted multiple face-associated genetic loci for which regulatory activities in human neural cells were established.
    1. Cell Biology

    A plasma membrane template for macropinocytic cups

    Douwe M Veltman et al.
    Rings of actin polymerisation that form around PIP3/Ras patches in the cell membrane drive the formation of macropinocytic cups.
    1. Cell Biology

    Neurofibromin controls macropinocytosis and phagocytosis in Dictyostelium

    Gareth Bloomfield et al.
    Inactivation of the Dictyostelium orthologue of the tumour suppressor Neurofibromin (NF1) enables amoebae to ingest dissolved nutrients using macropinocytosis more rapidly, and to prey on larger organisms using phagocytosis.
    1. Chromosomes and Gene Expression

    Ribosome recycling is not critical for translational coupling in Escherichia coli

    Kazuki Saito et al.
    Without ribosome recycling factor, ribosomes in Escherichia coli accumulate in 3'-UTRs and queue upstream of stop codons, but no effects were observed on the translational coupling of neighboring genes.
    1. Genetics and Genomics
    2. Microbiology and Infectious Disease

    Organisms with alternative genetic codes resolve unassigned codons via mistranslation and ribosomal rescue

    Natalie Jing Ma et al.
    Cells resolve unassigned codons with near-cognate suppression, frameshifting, and ribosomal rescue mechanisms, demonstrating that unassigned codons are permissible in both natural and engineered genetic codes as barriers to horizontal gene transfer.
    1. Developmental Biology
    2. Neuroscience

    Functional divergence of Plexin B structural motifs in distinct steps of Drosophila olfactory circuit assembly

    Ricardo Guajardo et al.
    Systematic in vivo analysis reveals the divergent engagement of Plexin B structural motifs in distinct neurodevelopmental processes and a regulatory role of convertase cleavage in Plexin B signaling.
    1. Structural Biology and Molecular Biophysics
    2. Cell Biology

    Investigating molecular crowding within nuclear pores using polarization-PALM

    Guo Fu et al.
    The super-resolution fluorescence microscopy approach polarization PALM (p-PALM) reveals that macromolecular crowding and inhomogeneity within nuclear pores generate a structurally and dynamically complex permeability barrier.
    1. Cell Biology
    2. Computational and Systems Biology

    Regulation of mRNA translation during mitosis

    Marvin E Tanenbaum et al.
    Ribosomal profiling reveals that translational repression is an important mechanism for cell cycle control and can complement protein degradation.

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