521 results found
    1. Cell Biology
    2. Chromosomes and Gene Expression

    A conserved function for pericentromeric satellite DNA

    Madhav Jagannathan et al.
    Satellite DNA mediates clustering of multiple chromosomes via formation of chromocenter to encapsulate the full complement of the genome into a single nucleus.
    1. Cell Biology
    2. Chromosomes and Gene Expression

    Chromocenters: Bundling up DNA

    Susan A Gerbi
    Structures known as chromocenters, comprising satellite DNA and proteins such as D1 or HMGA1, help to contain DNA inside the nucleus between cell divisions.
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    1. Developmental Biology and Stem Cells

    Negative regulation of G2-M by ATR (mei-41)/Chk1(Grapes) facilitates tracheoblast growth and tracheal hypertrophy in Drosophila

    Amrutha Kizhedathu et al.
    ATR/Chk1 contribute to G2 arrest in developing tracheoblasts, and arrest in G2 facilitates cellular and hypertrophic organ growth.
    1. Developmental Biology and Stem Cells

    Distinct myocardial lineages break atrial symmetry during cardiogenesis in zebrafish

    Almary Guerra et al.
    A discovery of two previously unknown, molecularly distinct fields of cardiac progenitors in zebrafish provides evidence for cardiac laterality prior to the emergence of cardiac septation and allows novel insights into cardiac development and disease.
    1. Cell Biology
    2. Chromosomes and Gene Expression

    Rev7 and 53BP1/Crb2 prevent RecQ helicase-dependent hyper-resection of DNA double-strand breaks

    Bryan A Leland et al.
    A single-cell assay reveals that the genetic rewiring that underlies PARP inhibitor resistance drives altered DNA double-strand break end resection pathway choice.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    Multivalency of NDC80 in the outer kinetochore is essential to track shortening microtubules and generate forces

    Vladimir A Volkov et al.
    Multiple NDC80 complexes in the outer kinetochore cooperate to bind the ends of depolymerizing microtubules and harness their power stroke.
    1. Chromosomes and Gene Expression

    Distinct ‘safe zones’ at the nuclear envelope ensure robust replication of heterochromatic chromosome regions

    Hani Ebrahimi et al.
    The nuclear periphery houses compositionally and functionally distinct domains, one of which provides a 'safe zone' for replication and reassembly of heterochromatic genome regions.
    1. Developmental Biology and Stem Cells

    Multi-view light-sheet imaging and tracking with the MaMuT software reveals the cell lineage of a direct developing arthropod limb

    Carsten Wolff et al.
    Quantitative analyses of multi-dimensional microscopy datasets with a new Fiji/ImageJ plugin for cell tracking reveal the lineage restrictions and morphogenetic cellular behaviors underlying embryonic limb outgrowth in the direct developing crustacean Parhyale hawaiensis.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    Topoisomerase VI senses and exploits both DNA crossings and bends to facilitate strand passage

    Timothy J Wendorff, James M Berger
    The engagement of DNA crossings is shown to license ATP hydrolysis and DNA cleavage by topoisomerase VI, a finding with mechanistic ramifications for related GHKL ATPases and meiotic recombination machineries.

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