277 results found
    1. Structural Biology and Molecular Biophysics
    2. Cell Biology

    Single-protein detection in crowded molecular environments in cryo-EM images

    J Peter Rickgauer et al.
    High-resolution template matching makes small, densely embedded proteins detectable.
    1. Cell Biology

    Cell cycle entry triggers a switch between two modes of Cdc42 activation during yeast polarization

    Kristen Witte et al.
    Optogenetic control of Cdc42 activation during polarization of budding yeast demonstrates a cell cycle regulated switch between two distinct modes of positive feedback.
    1. Structural Biology and Molecular Biophysics
    2. Plant Biology

    Kinetics of the LOV domain of ZEITLUPE determine its circadian function in Arabidopsis

    Ashutosh Pudasaini et al.
    In the plant circadian clock photoreceptor ZEITLUPE, evolutionarily selected residues distinguish photocycle kinetics and allosteric signal transduction pathways to permit proper circadian timing.
    1. Biochemistry and Chemical Biology

    Stepwise assembly of the human replicative polymerase holoenzyme

    Mark Hedglin et al.
    Fluorescence resonance energy transfer has been used to explore the interactions between DNA polymerases, sliding clamps and clamp loaders as DNA is replicated in human cells.
    1. Biochemistry and Chemical Biology
    2. Cell Biology

    A RanGTP-independent mechanism allows ribosomal protein nuclear import for ribosome assembly

    Sabina Schütz et al.
    The Tsr2 carrier protein connects the nuclear import machinery with the ribosome assembly pathway.
    1. Biochemistry and Chemical Biology
    2. Cell Biology

    SEC24A deficiency lowers plasma cholesterol through reduced PCSK9 secretion

    Xiao-Wei Chen et al.
    COPII vesicles regulate the metabolism of cholesterol through the selective transport of secretory proteins.
    1. Biochemistry and Chemical Biology
    2. Evolutionary Biology

    Non-classical amine recognition evolved in a large clade of olfactory receptors

    Qian Li et al.
    Fish trace amine-associated receptors evolved a novel structural motif that enables the detection of chemically diverse amine odors in a non-canonical 'inverted' orientation.
    1. Biochemistry and Chemical Biology
    2. Cell Biology

    Wss1 metalloprotease partners with Cdc48/Doa1 in processing genotoxic SUMO conjugates

    Maxim Y Balakirev et al.
    Wss1 is both a metalloprotease and SUMO ligase found in association with Cdc48 and Doa1 and accumulating in the vacuole upon DNA damage.
    1. Biochemistry and Chemical Biology
    2. Cell Biology

    Pharmacological dimerization and activation of the exchange factor eIF2B antagonizes the integrated stress response

    Carmela Sidrauski et al.
    A drug-like molecule called ISRIB, which activates the translation initiation factor eIF2B, antagonizes stress responses as diverse as protein misfolding and nutrient deprivation, and restores protein synthesis, enhancing memory.
    1. Biochemistry and Chemical Biology
    2. Cell Biology

    Proteotoxicity from aberrant ribosome biogenesis compromises cell fitness

    Blake W Tye et al.
    Rapidly proliferating cells are at risk of compromised cell fitness due to proteostasis collapse from perturbations that interfere with ribosome biogenesis.

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