3,315 results found
    1. Chromosomes and Gene Expression

    Human ORC/MCM density is low in active genes and correlates with replication time but does not delimit initiation zones

    Nina Kirstein et al.
    Replication origins are established throughout the genome with the exception of transcribed genes, and the local chromatin composition likely modulates the density of ORC and MCM as well as origin activation.
    1. Computational and Systems Biology
    2. Microbiology and Infectious Disease

    Initiation of chromosome replication controls both division and replication cycles in E. coli through a double-adder mechanism

    Guillaume Witz et al.
    Single-cell measurements combined with a new statistical framework for discriminating between models of cell cycle regulation show that chromosome initiation controls the E. coli cell cycle via two adder mechanisms.
    1. Biochemistry and Chemical Biology

    A new class of disordered elements controls DNA replication through initiator self-assembly

    Matthew W Parker et al.
    DNA replication initiation proteins contain a disordered domain that impacts each stage of their function, from chromatin recruitment and initiator co-assembly to the subsequent displacement of the factors from chromatin.
    1. Biochemistry and Chemical Biology
    2. Chromosomes and Gene Expression

    Nucleosomes influence multiple steps during replication initiation

    Ishara F Azmi et al.
    Nucleosomal DNAs assembled or modified by different chromatin remodeling enzymes differentially impact the origin licensing and helicase activation steps of replication initiation.
    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. Cell Biology
    2. Chromosomes and Gene Expression

    DDK regulates replication initiation by controlling the multiplicity of Cdc45-GINS binding to Mcm2-7

    Lorraine De Jesús-Kim et al.
    A multi-step process of helicase activation sensitizes replication initiation to the extent of replicative helicase phosphorylation.
    1. Biochemistry and Chemical Biology
    2. Chromosomes and Gene Expression

    Opposing roles for DNA replication initiator proteins ORC1 and CDC6 in control of Cyclin E gene transcription

    Manzar Hossain, Bruce Stillman
    Two related DNA replication initiation proteins contribute to the decision of whether to enter a new round of the cell division cycle or enter into a period of proliferative quiescence.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    A conserved MCM single-stranded DNA binding element is essential for replication initiation

    Clifford A Froelich et al.
    The crystal structure of the MCM helicase bound to single-stranded DNA reveals a binding motif that is critical for cell viability, helicase activation and DNA replication.
    1. Immunology and Inflammation
    2. Microbiology and Infectious Disease

    CpG and UpA dinucleotides in both coding and non-coding regions of echovirus 7 inhibit replication initiation post-entry

    Jelke Jan Fros et al.
    RNA virus replication is attenuated by an intrinsic restriction mechanism after introducing CpG/UpA dinucleotides into both non-translated and coding regions of viral genomes, which may be exploited in the design of attenuated virus vaccines.
    1. Biochemistry and Chemical Biology
    2. Chromosomes and Gene Expression

    A conserved Mcm4 motif is required for Mcm2-7 double-hexamer formation and origin DNA unwinding

    Kanokwan Champasa et al.
    Analysis of an essential motif in Mcm4 provides insights into replicative helicase double-hexamer formation and the first step requiring this intermediate during replication initiation.

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