5,411 results found
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    A Meier-Gorlin syndrome mutation in a conserved C-terminal helix of Orc6 impedes origin recognition complex formation

    Franziska Bleichert et al.
    Electron microscopy uncovers the structure of the origin recognition complex (ORC) in metazoans, and reveals how mutations in the ORC6 subunit lead to Meier-Gorlin syndrome in humans.
    1. Chromosomes and Gene Expression

    The human origin recognition complex is essential for pre-RC assembly, mitosis, and maintenance of nuclear structure

    Hsiang-Chen Chou et al.
    The initiation of human genome replication requires the six-subunit origin recognition complex (ORC) and CDC6, with ORC playing additional roles during mitosis and in organization of the cell nucleus.
    1. Computational and Systems Biology
    2. Physics of Living Systems

    Nuclei determine the spatial origin of mitotic waves

    Felix E Nolet et al.
    Nuclei and spatial system dimensions control local concentrations of cell cycle regulators, determining the spatial origin of waves that coordinate​ DNA replication and, subsequently, cell division.
    1. Stem Cells and Regenerative Medicine

    Conserved functional antagonism of CELF and MBNL proteins controls stem cell-specific alternative splicing in planarians

    Jordi Solana et al.
    A conserved alternative splicing program is specific to planarian stem cells and is controlled by the highly conserved splicing factors CELF and MBNL; therefore, this mode of regulating stem cells is likely ancestral to all animals.
    1. Chromosomes and Gene Expression
    2. Genetics and Genomics

    The role of Rif1 in telomere length regulation is separable from its role in origin firing

    Calla B Shubin, Carol W Greider
    Telomere length is linked to DNA replication, and we found excessive telomeric origin firing caused by several distinct mutants did not lengthen telomeres, narrowing possible mechanisms.
    1. Cell Biology

    Irisin directly stimulates osteoclastogenesis and bone resorption in vitro and in vivo

    Eben G Estell et al.
    The regulation of bone homeostasis by the exercise-induced myokine irisin is in part potentiated by a direct action on osteoclast differentiation and resorption.
    1. Microbiology and Infectious Disease
    2. Plant Biology

    An effector of the Irish potato famine pathogen antagonizes a host autophagy cargo receptor

    Yasin F Dagdas et al.
    A plant pathogen effector evolved a short linear motif to subvert autophagic defenses by antagonising a host cargo receptor.
    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. Structural Biology and Molecular Biophysics

    The structure of SV40 large T hexameric helicase in complex with AT-rich origin DNA

    Dahai Gai et al.
    A structural study reveals how the simian virus 40 Large-T hexamer helicase interacts with its origin DNA and partially melts the origin double-stranded DNA within the hexamer channel.
    1. Computational and Systems Biology

    Origin of a folded repeat protein from an intrinsically disordered ancestor

    Hongbo Zhu et al.
    Minimal changes allow an ancestral, unfolded peptide to adopt a known fold by repetition, illuminating a possible path for the emergence of folded proteins at the origin of life.

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