45 results found
    1. Cell Biology

    Aurora A depletion reveals centrosome-independent polarization mechanism in Caenorhabditis elegans

    Kerstin Klinkert et al.
    Experiments reveal mechanisms through which Caenorhabditis elegans zygotes depleted of Aurora A or lacking centrosomes spontaneously establish two posterior PAR-2 domains, one at each pole, in a curvature-dependent manner.
    1. Chromosomes and Gene Expression

    An ancient germ cell-specific RNA-binding protein protects the germline from cryptic splice site poisoning

    Ingrid Ehrmann et al.
    Cell division by meiosis during sperm production depends on expression of an RNA-binding protein that prevents abnormal RNA-processing pathways.
    1. Cell Biology

    Cortical dynein pulling mechanism is regulated by differentially targeted attachment molecule Num1

    Safia Omer et al.
    Dynein-dependent microtubule-cortex interactions – "side-on" versus "end-on" pulling – are regulated by cortical ER and mediated by distinct pools of cortical anchor that are differentially localized along the cell periphery.
    1. Cell Biology
    2. Computational and Systems Biology

    A positive-feedback-based mechanism for constriction rate acceleration during cytokinesis in Caenorhabditis elegans

    Renat N Khaliullin et al.
    Positive feedback between contractile ring myosin and compression-driven cortical flow can explain the exponential accumulation of contractile ring components and constriction rate acceleration that ensures timely cell separation during cytokinesis.
    1. Chromosomes and Gene Expression
    2. Computational and Systems Biology

    The eukaryotic bell-shaped temporal rate of DNA replication origin firing emanates from a balance between origin activation and passivation

    Jean-Michel Arbona et al.
    The universal eukaryotic DNA replication kinetics is the consequence of simple physicochemical rules resulting from the localisation of potential replication origins at discrete sites and the diffusion of limiting origin firing factors in the nuclear space.
    1. Neuroscience

    Rem2 stabilizes intrinsic excitability and spontaneous firing in visual circuits

    Anna R Moore et al.
    In vivo and ex vivo analysis of the activity-regulated gene Rem2 in the mouse visual system sheds new light on the contribution of intrinsic excitability in circuit plasticity.
    1. Cell Biology
    2. Structural Biology and Molecular Biophysics

    Systematic studies of all PIH proteins in zebrafish reveal their distinct roles in axonemal dynein assembly

    Hiroshi Yamaguchi et al.
    Zebrafish genetics and cryo-electron tomography reveal distinct roles of all vertebrate PIH family proteins in axonemal dynein assembly and cilia/flagella motions, assigning specific dynein subtypes to each PIH protein.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    Acyl chain asymmetry and polyunsaturation of brain phospholipids facilitate membrane vesiculation without leakage

    Marco M Manni et al.
    The asymmetric combination of saturated and polyunsaturated acyl chains in phospholipids as typically observed in synapses makes membranes prone to deformation and fission without compromising their impermeability.
    1. Chromosomes and Gene Expression
    2. Genetics and Genomics

    Efficient termination of nuclear lncRNA transcription promotes mitochondrial genome maintenance

    Dorine Jeanne Mariëtte du Mee et al.
    RNA Polymerase II transcriptional termination of a nuclear long non-coding RNA is required to maintain the mitochondrial genome and hence promotes budding yeast growth.
    1. Structural Biology and Molecular Biophysics
    2. Cell Biology

    Autocatalytic microtubule nucleation determines the size and mass of Xenopus laevis egg extract spindles

    Franziska Decker et al.
    Quantitative microscopy and theory show that the size of Xenopus laevis egg extract spindles is controlled by a spatially-regulated autocatalytic growth mechanism driven by microtubule-stimulated microtubule nucleation.

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