440 results found
    1. Computational and Systems Biology
    2. Genes and Chromosomes

    Natural changes in light interact with circadian regulation at promoters to control gene expression in cyanobacteria

    Joseph Robert Piechura et al.
    Cyanobacteria cope with both predictable day/night changes and natural fluctuations in light during the day by adjusting the expression dynamics of circadian-clock-controlled genes via a network of transcriptional regulators.
    1. Ecology
    2. Plant Biology

    The Natural History of Model Organisms: Planting molecular functions in an ecological context with Arabidopsis thaliana

    Ute Krämer
    Research in molecular ecology and evolution is increasingly utilizing the model plant Arabidopsis thaliana, placing a spotlight on its natural history.
    1. Developmental Biology and Stem Cells

    Neural stem cells induce the formation of their physical niche during organogenesis

    Ali Seleit et al.
    A physical niche for neural stem cells is generated by the induction of the immediate skin epithelium, a process triggered by the arrival of neural precursors during sensory organ formation in medaka.
    1. Neuroscience

    Selective rab11 transport and the intrinsic regenerative ability of CNS axons

    Hiroaki Koseki et al.
    Mature axons lose the ability to regenerate because key growth molecules are excluded through changes in vesicle transport, and restoring transport can restore regeneration.
    1. Biophysics and Structural Biology
    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. Biophysics and Structural Biology

    Three dimensional reconstruction of energy stores for jumping in planthoppers and froghoppers from confocal laser scanning microscopy

    Igor Siwanowicz, Malcolm Burrows
    Three dimensional reconstructions of the mechanical energy stores of jumping insects reveal how the miniaturized components interact and function.
    1. Genes and Chromosomes

    Histone H3G34R mutation causes replication stress, homologous recombination defects and genomic instability in S. pombe

    Rajesh K Yadav et al.
    Mutation of Glycine 34 to Arginine within the N-terminal tail of histone H3 alters post-translational modifications on Lysine 36 and is associated with a delay in replication restart, defective homologous recombination and an increase in genomic instability.
    1. Cell Biology

    The complex of TRIP-Br1 and XIAP ubiquitinates and degrades multiple adenylyl cyclase isoforms

    Wenbao Hu et al.
    XIAP/TRIP-Br1-mediated degradation of multiple adenylyl cyclase isoforms is a previously unrecognised general mechanism for controlling adenylyl cyclase expression and the homeostasis of cAMP signalling.
    1. Cell Biology

    The step-wise pathway of septin hetero-octamer assembly in budding yeast

    Andrew Weems, Michael McMurray
    In budding yeast cells, slow monomeric septin GTPase activity and the cytosolic GTP:GDP ratio dictate the relative incorporation of alternative subunits during septin hetero-oligomer assembly, which proceeds by discrete, ordered steps dependent on allostery between interaction interfaces.
    1. Biophysics and Structural Biology

    Molecular architecture of the 90S small subunit pre-ribosome

    Qi Sun et al.
    The nearly complete architecture of the gigantic 90S precursor of small ribosomal subunit is determined by cryo-EM.

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