5,130 results found
    1. Biochemistry and Chemical Biology
    2. Cell Biology

    MAF1 represses CDKN1A through a Pol III-dependent mechanism

    Yu-Ling Lee et al.
    Pol II-mediated transcription and chromatin looping of CDKN1A are repressed by MAF1 through the regulation of Pol III activity.
    1. Chromosomes and Gene Expression

    The molecular basis of coupling between poly(A)-tail length and translational efficiency

    Kehui Xiang, David P Bartel
    For poly(A)-tail length to influence mRNA translational efficiency, poly(A)-binding protein (PABPC) must be limiting, mRNAs lacking PABPC must be stable, and translation initiation must be sensitive to PABPC levels.
    1. Ecology
    2. Neuroscience

    Burst muscle performance predicts the speed, acceleration, and turning performance of Anna’s hummingbirds

    Paolo S Segre et al.
    Maneuverability is thought to be limited by either intrinsic constraints or physiological capacity, and automated tracking of flying hummingbirds reveals that muscle capacity explains much of the variation in their flight trajectories.
    1. Biochemistry and Chemical Biology

    Translation repression via modulation of the cytoplasmic poly(A)-binding protein in the inflammatory response

    Xu Zhang et al.
    The RNA-binding protein, Zfp36, which is critical for resolving inflammation, inhibits the production of proinflammatory cytokines via modulation of the cytoplasmic poly(A)-binding protein.
    1. Neuroscience

    Inhibiting poly(ADP-ribosylation) improves axon regeneration

    Alexandra B Byrne et al.
    In C. elegans and mouse neurons, the balance between poly(ADP-ribose) glycohydrolases and poly(ADP-ribose) polymerases regulates axon regeneration downstream of DLK-1/MAPKKK signaling.
    1. Plant Biology

    Phloem unloading in Arabidopsis roots is convective and regulated by the phloem-pole pericycle

    Timothy J Ross-Elliott et al.
    A study of solute and macromolecule trafficking in plants reveals a previously undescribed route for carbon distribution in growing root tissues.
    1. Structural Biology and Molecular Biophysics
    2. Cell Biology

    STIL binding to Polo-box 3 of PLK4 regulates centriole duplication

    Christian Arquint et al.
    Binding of STIL to PLK4's characteristic Polo-box 3 links PLK4 kinase activation to STIL self-association and is a crucial regulatory step for the localized recruitment of downstream factors in centriole duplication.
    1. Developmental Biology
    2. Chromosomes and Gene Expression

    mRNA poly(A)-tail changes specified by deadenylation broadly reshape translation in Drosophila oocytes and early embryos

    Stephen W Eichhorn et al.
    Profiling of mRNA poly(A)-tail lengths and translational efficiencies provides new insights into posttranscriptional gene regulation in early Drosophila development.
    1. Biochemistry and Chemical Biology
    2. Cell Biology

    Robust cullin-RING ligase function is established by a multiplicity of poly-ubiquitylation pathways

    Spencer Hill et al.
    Human cullin-RING ligases are buffered to a much greater extent than had been previously appreciated, and the roles of ubiquitin chain extension enzymes are far more nuanced at physiological concentrations.
    1. Cell Biology

    Polo-like kinase acts as a molecular timer that safeguards the asymmetric fate of spindle microtubule-organizing centers

    Laura Matellán et al.
    Molecular and cell biology analyses reveal novel roles of Polo-like kinases in establishing non-random segregation patterns of spindle-associated microtubule-organizing centers during mitosis, a phenomenon linked with replicative cell aging.

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