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    1. Biochemistry and Chemical Biology
    2. Cell Biology

    SEC24A deficiency lowers plasma cholesterol through reduced PCSK9 secretion

    Xiao-Wei Chen et al.
    COPII vesicles regulate the metabolism of cholesterol through the selective transport of secretory proteins.
    1. Biochemistry and Chemical Biology

    Cell Biology: Opening up new fronts in the fight against cholesterol

    Russell A DeBose-Boyd, Jay D Horton
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    1. Cell Biology
    2. Developmental Biology

    Ovulation in Drosophila is controlled by secretory cells of the female reproductive tract

    Jianjun Sun, Allan C Spradling
    Secretory cells in the fruit fly reproductive tract produce secretions that control ovulation through a conserved mechanism that could provide insights into ovarian cancer.
    1. Plant Biology

    Accurate timekeeping is controlled by a cycling activator in Arabidopsis

    Polly Yingshan Hsu et al.
    The circadian clock in the model plant organism Arabidopsis thaliana is best described as a highly connected network made up of clock-regulated activators and repressors of transcription, rather than two coupled, repressor-based feedback loops.
    1. Evolutionary Biology
    2. Microbiology and Infectious Disease

    Stability-mediated epistasis constrains the evolution of an influenza protein

    Lizhi Ian Gong et al.
    Some of the mutations that occur during influenza evolution can only be tolerated in conjunction with other mutations that increase the stability of a viral protein.
    1. Cell Biology

    TRPM5-mediated calcium uptake regulates mucin secretion from human colon goblet cells

    Sandra Mitrovic et al.
    Goblet cells secrete mucins—which are key components of mucus—in a process that is regulated by calcium ions, which enter the goblet cells via a mechanism involving a channel protein called TRPM5.
    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. Plant Biology

    Temporal transcriptional response to ethylene gas drives growth hormone cross-regulation in Arabidopsis

    Katherine Noelani Chang et al.
    The plant hormone ethylene regulates the expression of multiple genes in the model plant Arabidopsis, including those that respond to other hormones.
    1. Biochemistry and Chemical Biology
    2. Evolutionary Biology

    The autoregulation of a eukaryotic DNA transposon

    Corentin Claeys Bouuaert et al.
    A DNA transposon, or ‘jumping gene’, controls its amplification within a genome through a competition between the enzyme multimers that are responsible for its mobility.
    1. Cell Biology
    2. Plant Biology

    Fluorescent sensors reporting the activity of ammonium transceptors in live cells

    Roberto De Michele et al.
    A modified form of Green Fluorescent Protein integrated into an ammonium transporter provides a sensor that can be used to monitor transport activity in vivo.