13 results found
    1. Cell Biology

    Curvature-induced expulsion of actomyosin bundles during cytokinetic ring contraction

    Junqi Huang et al.
    Cytokinetic actomyosin ring disassembly occurs through a novel mechanism in which the increased ring curvature, generated through contraction, itself promotes the disassembly process.
    1. Cell Biology
    2. Microbiology and Infectious Disease

    Stress-activated MAPK signaling controls fission yeast actomyosin ring integrity by modulating formin For3 levels

    Elisa Gómez-Gil et al.
    Microscopic and biochemical analysis show that the stress-activated MAP kinase pathway targets the formin For3 to modulate actomyosin ring integrity in response to environmental cues.
    1. Chromosomes and Gene Expression
    2. Evolutionary Biology

    Intrinsic cooperativity potentiates parallel cis-regulatory evolution

    Trevor R Sorrells et al.
    Cooperativity between two transcription regulators occurs through protein-protein interactions with a general transcription factor complex and potentiates the parallel evolution of their DNA binding sites.
    1. Cell Biology

    Actin assembly ruptures the nuclear envelope by prying the lamina away from nuclear pores and nuclear membranes in starfish oocytes

    Natalia Wesolowska et al.
    Combined light and electron microscopy reveals a new function for Arp2/3-mediated actin assembly in nuclear envelope rupture, which leads to a separation of nuclear membranes and pores from the lamina.
    1. Cell Biology

    The influence of dynein processivity control, MAPs, and microtubule ends on directional movement of a localising mRNA

    Harish Chandra Soundararajan, Simon L Bullock
    In vitro reconstitution of mRNA motility reveals the basis of directionally biased motion by groups of motors, their response to potential obstacles, and the consequences of reaching microtubule ends.
    1. Chromosomes and Gene Expression
    2. Genetics and Genomics

    H3K9me3 is required for inheritance of small RNAs that target a unique subset of newly evolved genes

    Itamar Lev et al.
    In Caenorhabditis elegans histone methylation (H3K9me3) controls the synthesis of heritable small RNAs in a gene-specific manner and thus enables 'flagging' of newly-acquired genes.
    1. Developmental Biology

    A widely employed germ cell marker is an ancient disordered protein with reproductive functions in diverse eukaryotes

    Michelle A Carmell et al.
    GCNA proteins comprise a previously unnoticed family of proteins that has been enriched in cells carrying a heritable genome since the invention of sexual reproduction in eukaryotes, and has had reproductive function for at least 600 million years.
    1. Genetics and Genomics

    Loss of centromere function drives karyotype evolution in closely related Malassezia species

    Sundar Ram Sankaranarayanan et al.
    The centromeres in Malassezia species, by breakage or inactivation, facilitate genome rearrangements that can result in varying karyotypes and contribute to the evolution of these species.
    1. Chromosomes and Gene Expression
    2. Biochemistry and Chemical Biology

    Cooperative interactions facilitate stimulation of Rad51 by the Swi5-Sfr1 auxiliary factor complex

    Bilge Argunhan et al.
    The intrinsically disordered N-terminus of Sfr1 contains two Rad51 binding sites that facilitate Rad51 filament stabilization and ATPase stimulation by the Swi5-Sfr1 complex, leading to efficient Rad51-driven strand exchange.
    1. Cell Biology

    Multi-phosphorylation reaction and clustering tune Pom1 gradient mid-cell levels according to cell size

    Veneta Gerganova et al.
    Advanced microscopy techniques reveal that clusters of Pom1 kinase at the membrane represent the functional unit that shape the concentration gradients and modulate Pom1 mid-cell levels according to cell size.

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