1,380 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. 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. Neuroscience

    Dual orexin and MCH neuron-ablated mice display severe sleep attacks and cataplexy

    Chi Jung Hung et al.
    New transgenic mice, which can be ablated both orexin neurons and MCH neurons, showed new brain state and revealed functional interaction that MCH neurons have protective role in narcolepsy symptoms.
    1. Cell Biology
    2. Microbiology and Infectious Disease

    Chlamydia trachomatis-containing vacuole serves as deubiquitination platform to stabilize Mcl-1 and to interfere with host defense

    Annette Fischer et al.
    Obligate intracellular Chlamydia secrete a deubiquitinating enzyme (Cdu1) into the membrane of the Chlamydia-containing vacuole to deubiquitinate selected host proteins and support the survival of the bacteria during genital infection.
    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. Biochemistry and Chemical Biology
    2. Cell Biology

    MCU encodes the pore conducting mitochondrial calcium currents

    Dipayan Chaudhuri et al.
    Genetic and electrophysiological experiments reveal that a gene called MCU encodes the ion channel pore that allows calcium ions to cross the inner mitochondrial membrane.
    1. Neuroscience

    Social observation enhances cross-environment activation of hippocampal place cell patterns

    Xiang Mou, Daoyun Ji
    Place cells associated with track-running are activated in rats staying in a nearby box while another rat running on the track, suggesting that social observation facilitates spatial memory representations.
    1. Neuroscience

    The brain in motion: How ensemble fluidity drives memory-updating and flexibility

    William Mau et al.
    Ensemble fluidity, observed as synaptic turnover and temporal drift in neuronal patterns, supports memory-updating and flexibility while maintaining memory stability.
    1. Structural Biology and Molecular Biophysics

    Thermal fluctuations of immature SOD1 lead to separate folding and misfolding pathways

    Ashok Sekhar et al.
    Solution NMR spectroscopy reveals the energy landscape of immature Cu, Zn-superoxide dismutase and leads to atomic resolution structural models of transiently populated non-native oligomers.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    The conserved aspartate ring of MCU mediates MICU1 binding and regulation in the mitochondrial calcium uniporter complex

    Charles B Phillips et al.
    Biochemical analysis reveals molecular mechanisms underlying the activation of the mitochondrial Ca2+ uniporter by intracellular Ca2+ signals.

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