3,214 results found
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    Analysis of the crystal structure of an active MCM hexamer

    Justin M Miller et al.
    Building on previous work (Froelich et al., 2014), we present the X-ray crystal structure of an active MCM hexamer, which suggests a mechanism for MCM regulation and demonstrates a key interaction between the major domains.
    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. 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. Ecology

    Plant-associated CO2 mediates long-distance host location and foraging behaviour of a root herbivore

    Carla CM Arce et al.
    The larvae of the western corn rootworm use root-emitted CO2 to successfully locate the most suitable host plant.
    1. Developmental Biology

    The Glide/Gcm fate determinant controls initiation of collective cell migration by regulating Frazzled

    Tripti Gupta et al.
    The role of the Frazzled chemoattractant receptor is to triggers migration initiation as part of the glial developmental program induced by the Glide/Gcm transcription factor.
    1. Biochemistry and Chemical Biology

    Amidst multiple binding orientations on fork DNA, Saccharolobus MCM helicase proceeds N-first for unwinding

    Himasha M Perera, Michael A Trakselis
    The archaeal MCM helicase can load in multiple orientations on DNA but translocation proceeds with a leading N-terminal domain, which affects double hexamer activation at origins of replication.
    1. Cell Biology
    2. Developmental Biology

    A feedback mechanism converts individual cell features into a supracellular ECM structure in Drosophila trachea

    Arzu Öztürk-Çolak et al.
    Cell-cell junctions and the actin cytoskeleton are key players in the organisation and patterning of the extracellular matrix (ECM) on the apical side of tracheal cells.
    1. Cell Biology
    2. Structural Biology and Molecular Biophysics

    The heteromeric PC-1/PC-2 polycystin complex is activated by the PC-1 N-terminus

    Kotdaji Ha et al.
    Soluble fragments cleaved from the N-terminus of PC-1 activate the PC-1/PC-2 heteromeric polycystin channel, describing for the first time that the N-terminus itself is an endogenous ligand.
    1. Developmental Biology
    2. Neuroscience

    MiRNA-128 regulates the proliferation and neurogenesis of neural precursors by targeting PCM1 in the developing cortex

    Wei Zhang et al.
    During early cortical development, microRNA-128 regulates the homeostasis of neural stem cells by targeting PCM1, a protein that is critical for cell division.
    1. Microbiology and Infectious Disease

    HetL, HetR and PatS form a reaction-diffusion system to control pattern formation in the cyanobacterium nostoc PCC 7120

    Xiaomei Xu et al.
    Genetic, biochemistry and modeling approaches reveal elements of a Turing-type reaction-diffusion system to control pattern formation in differentiating cyanobacterial filaments.

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