31 results found
    1. Chromosomes and Gene Expression
    2. Structural Biology and Molecular Biophysics

    The final step of 40S ribosomal subunit maturation is controlled by a dual key lock

    Laura Plassart et al.
    Cryo-EM and functional studies reveal how combined action of proteins RPS26/eS26 and RIO1 allows late precursors to the human small ribosomal particle to be matured into fully translation-competent 40S subunits.
    1. Biochemistry and Chemical Biology
    2. Cell Biology

    eIF2B conformation and assembly state regulate the integrated stress response

    Michael Schoof et al.
    eIF2-P activates the integrated stress response by inducing a conformational change in eIF2B that decreases substrate (eIF2) binding and reduces eIF2B's catalytic activity.
    1. Biochemistry and Chemical Biology
    2. Genetics and Genomics

    Therapeutic genetic variation revealed in diverse Hsp104 homologs

    Zachary M March et al.
    Exploring natural Hsp104 variation reveals unexpected tuning of a passive activity that inhibits aggregation of specific substrates to selectively counter TDP-43 or alpha-synuclein proteotoxicity connected to neurodegenerative disease.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    Transport mechanism of P4 ATPase phosphatidylcholine flippases

    Lin Bai et al.
    A detailed molecular mechanism on lipid flipping from outside leaflet to the inside leaflet of the eukaryotic plasma membrane bilayer.
    1. Cell Biology

    Optimized Vivid-derived Magnets photodimerizers for subcellular optogenetics in mammalian cells

    Lorena Benedetti et al.
    eMags is an engineered photodimerizer pair for optogenetic modulation in mammalian cells that is especially suited for the manipulation of intracellular processes occurring in small volumes or subcellular organelles.
    1. Cell Biology
    2. Structural Biology and Molecular Biophysics

    The Sec1/Munc18 protein Vps45 holds the Qa-SNARE Tlg2 in an open conformation

    Travis J Eisemann et al.
    Whereas in a paradigmatic structure an SM protein chaperone clamps its client SNARE shut, a second structure demonstrates that an SM protein can also hold its SNARE open to promote assembly.
    1. Structural Biology and Molecular Biophysics

    Structure of substrate-bound SMG1-8-9 kinase complex reveals molecular basis for phosphorylation specificity

    Lukas M Langer et al.
    First structural view of a substrate-bound PIKK (PI3K-related-kinase) by cryo-EM explains phosphorylation specificity toward a short amino-acid motif shared across the PIKK family and rationalizes PIKK auto-inhibition by regulatory domain.
    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. Structural Biology and Molecular Biophysics

    Structure of the AAA protein Msp1 reveals mechanism of mislocalized membrane protein extraction

    Lan Wang et al.
    Msp1 recruits substrates at the open seam of the spiral oligomer and extracts them with functionally adapted elements.
    1. Chromosomes and Gene Expression

    The CDK Pef1 and protein phosphatase 4 oppose each other for regulating cohesin binding to fission yeast chromosomes

    Adrien Birot et al.
    Cohesin loader activity is regulated by phosphorylation of its cohesin substrate.

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