40 results found
    1. Cell Biology

    Nicotinamide adenine dinucleotide is transported into mammalian mitochondria

    Antonio Davila et al.
    Stable isotope labeling reveals that NAD crosses the inner membrane of mammalian mitochondria via an unknown transporter.
    1. Biochemistry and Chemical Biology

    In Vitro Evolution: Rethinking the tools of the RNA world

    Antony Crisp, Thomas Carell
    An artificially evolved ribozyme can catalyse the synthesis of RNA by using trinucleotide triphosphates as building blocks.
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    1. Developmental Biology

    A vitamin-B2-sensing mechanism that regulates gut protease activity to impact animal’s food behavior and growth

    Bin Qi et al.
    The availability of an essential dietary micronutrient is evaluated by an intestinal signaling system that in turn regulates food-uptake and response behaviors by modulating protease expression.
    1. Cell Biology

    Cell cycle entry triggers a switch between two modes of Cdc42 activation during yeast polarization

    Kristen Witte et al.
    Optogenetic control of Cdc42 activation during polarization of budding yeast demonstrates a cell cycle regulated switch between two distinct modes of positive feedback.
    1. Cancer Biology
    2. Human Biology and Medicine

    BRAFV600E cooperates with CDX2 inactivation to promote serrated colorectal tumorigenesis

    Naoya Sakamoto et al.
    Genetic analyses reveal how CDX2 and BRAF defects seen in serrated colorectal cancer (CRCs), a poor prognosis CRC subset, cooperate in tumorigenesis in humans and in a mouse cancer model.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    A vocabulary of ancient peptides at the origin of folded proteins

    Vikram Alva et al.
    A comparative study of modern proteins identifies 40 fragments that may represent the observable remnants of a primordial RNA-peptide world.
    1. Chromosomes and Gene Expression
    2. Evolutionary Biology

    Conservation of transcription factor binding specificities across 600 million years of bilateria evolution

    Kazuhiro R Nitta et al.
    Drosophila has almost all transcription factor binding specificities available to humans; and human transcription factors with divergent specificities operate in cell types that are not found in fruit flies.
    1. Chromosomes and Gene Expression

    Dual control of NAD+ synthesis by purine metabolites in yeast

    Benoît Pinson et al.
    Two distinct processes drive coordinated synthesis of purine and pyridine (NAD+) nucleotides in response to AICAR derivatives and ATP.
    1. Immunology and Inflammation
    2. Physics of Living Systems

    Light-based tuning of ligand half-life supports kinetic proofreading model of T cell signaling

    Doug K Tischer, Orion David Weiner
    Direct control of ligand binding half-life with light shows that lifetime strongly affects T cell signaling.
    1. Human Biology and Medicine
    2. Neuroscience

    Clearance of beta-amyloid is facilitated by apolipoprotein E and circulating high-density lipoproteins in bioengineered human vessels

    Jerome Robert et al.
    Modelling beta-amyloid deposition in bioengineered human vessels represents a notable advance to further investigate the role of the vasculature in Alzheimer's disease.

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