562 results found
    1. Neuroscience

    Loss of Frataxin induces iron toxicity, sphingolipid synthesis, and Pdk1/Mef2 activation, leading to neurodegeneration

    Kuchuan Chen et al.
    In Drosophila, the loss of Frataxin causes iron accumulation in the nervous system, which in turn enhances sphingolipid synthesis and activation of PDK1 and Mef2, which leads to neurodegeneration.
    1. Neuroscience

    Loss of Frataxin activates the iron/sphingolipid/PDK1/Mef2 pathway in mammals

    Kuchuan Chen et al.
    The iron/sphingolipid/PDK1/Mef2 pathway is activated in mammals upon loss of Frataxin.
    1. Neuroscience

    An essential role for MEF2C in the cortical response to loss of sleep in mice

    Theresa E Bjorness et al.
    The transcription factor, MEF2C, mediates a change in approximately one half of the expressed frontal cortical transcriptome controlling cellular metabolism and synaptic strength in response to acute loss of sleep.
    1. Neuroscience

    Distinct stages of synapse elimination are induced by burst firing of CA1 neurons and differentially require MEF2A/D

    Chia-Wei Chang et al.
    Increasing periods of neuronal activity progressively weaken and then eliminate synapses through the activation of specific transcription factors and genes.
    1. Neuroscience

    MEF2C regulates cortical inhibitory and excitatory synapses and behaviors relevant to neurodevelopmental disorders

    Adam J Harrington et al.
    Mice that lack the autism- and schizophrenia-linked gene MEF2C in cortical neurons have an imbalance of excitatory and inhibitory synapses, and impaired social and cognitive abilities.
    1. Chromosomes and Gene Expression

    Ubiquitination-dependent control of sexual differentiation in fission yeast

    Fabrizio Simonetti et al.
    The RNA-binding protein Mmi1 targets its own inhibitor Mei2 for ubiquitination by the E3 ubiquitin ligase Not4/Mot2 in order to preserve its role in meiotic mRNA decay during vegetative growth.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    Ensemble cryo-EM uncovers inchworm-like translocation of a viral IRES through the ribosome

    Priyanka D Abeyrathne et al.
    An ensemble of cryo-EM structures reveals how eukaryotic elongation factor 2 positions the first codon of a viral mRNA for translation.
    1. Cancer Biology
    2. Genetics and Genomics

    Targets and genomic constraints of ectopic Dnmt3b expression

    Yingying Zhang et al.
    Ectopic expression of Dnmt3b leads to wide-spread CpG island hypermethylation that is largely defined by chromatin state and has some distinct features when compared to the cancer methylome.
    1. Cell Biology
    2. Structural Biology and Molecular Biophysics

    The carboxyl-terminal sequence of bim enables bax activation and killing of unprimed cells

    Xiaoke Chi et al.
    The C-terminal membrane binding domain of Bim is shown to interact with and activate Bim enabling it to kill cells not dependent on anti-apoptotic proteins for survival.
    1. Chromosomes and Gene Expression
    2. Genetics and Genomics

    Role of the pre-initiation complex in Mediator recruitment and dynamics

    Elisabeth R Knoll et al.
    Genome-wide recruitment of Mediator and Pol II is reduced in yeast lacking the Med2-Med3-Med15 tail module triad, and Mediator association with gene promoters depends on Pol II, Taf1, and TBP.

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