735 results found
    1. Neuroscience

    Chronic social isolation reduces 5-HT neuronal activity via upregulated SK3 calcium-activated potassium channels

    Derya Sargin et al.
    Serotonin neurons in chronically isolated mice become less responsive to excitatory stimulation, but inhibiting a distinctive calcium-activated potassium channel can restore both neuronal activity and behavior.
    1. Biochemistry and Chemical Biology

    Skd3 (human ClpB) is a potent mitochondrial protein disaggregase that is inactivated by 3-methylglutaconic aciduria-linked mutations

    Ryan R Cupo, James Shorter
    Skd3 (human ClpB) is a potent ATP-dependent mitochondrial protein disaggregase that is activated by the rhomboid protease, PARL, and inactivated by MGCA7-linked mutations.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    BRCT domains of the DNA damage checkpoint proteins TOPBP1/Rad4 display distinct specificities for phosphopeptide ligands

    Matthew Day et al.
    Structural and biochemical analyses of BRCT domain interactions defines TOPBP1/Rad4 selectivity for phosphorylated motifs, allowing identification of new interactions, and providing insights into assembly of different TOPBP1-scaffolded DNA repair complexes.
    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. Chromosomes and Gene Expression

    Checkpoint inhibition of origin firing prevents inappropriate replication outside of S-phase

    Mark C Johnson et al.
    The S-phase checkpoint has roles in all phases of the cell cycle, which has implications for the majority of cancers that lack cell cycle controls.
    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. Chromosomes and Gene Expression
    2. Computational and Systems Biology

    Transcriptome maps of general eukaryotic RNA degradation factors

    Salma Sohrabi-Jahromi et al.
    Mapping of 30 general RNA degradation factors onto the yeast transcriptome provides the global distribution of factors for RNA turnover and surveillance in a eukaryotic cell.
    1. Developmental Biology

    Enhancer architecture sensitizes cell specific responses to Notch gene dose via a bind and discard mechanism

    Yi Kuang et al.
    DNA binding site architecture promotes Notch transcription complex degradation to sensitize developmental processes requiring long-duration signaling.
    1. Computational and Systems Biology
    2. Genetics and Genomics

    Time-resolved mapping of genetic interactions to model rewiring of signaling pathways

    Florian Heigwer et al.
    Genetic interaction analysis by combinatorial genetic perturbation and high-throughput imaging maps time- and context-dependent crosstalk between signaling pathways.
    1. Chromosomes and Gene Expression
    2. Plant Biology

    Biogenesis of phased siRNAs on membrane-bound polysomes in Arabidopsis

    Shengben Li et al.
    Arabidopsis microRNAs and their effector protein ARGONAUTE1 associate with and act on polysomes on the rough endoplasmic reticulum.

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