52 results found
    1. Biochemistry and Chemical Biology

    Ribosomes slide on lysine-encoding homopolymeric A stretches

    Kristin S Koutmou et al.
    Ribosomes undergo an unanticipated movement (‘sliding’) while translating homopolymeric A sequences, which provides a biochemical rationale for the observation that iterated AAA codons are under-represented in gene-coding sequences.
    1. Microbiology and Infectious Disease

    Natural mismatch repair mutations mediate phenotypic diversity and drug resistance in Cryptococcus deuterogattii

    R Blake Billmyre et al.
    Eukaryotic pathogens, like Cryptococcus deuterogattii, can use elevated mutation rates to more rapidly adapt to stresses, such as drug challenges, but at the cost of lower fitness in less stressful environments.
    1. Physics of Living Systems

    A physical model describing the interaction of nuclear transport receptors with FG nucleoporin domain assemblies

    Raphael Zahn et al.
    A homopolymer-sphere model is shown to accurately reproduce the interactions that underpin selective gating of macromolecular transport into and out of the cell nucleus.
    1. Plant Biology

    Antimicrobial peptide expression in a wild tobacco plant reveals the limits of host-microbe-manipulations in the field

    Arne Weinhold et al.
    The attempt to manipulate a microbiome in planta to study the ecological consequences under field conditions leaves plants and their microbes surprisingly unimpressed.
    1. Cancer Biology

    Mitochondrial genetic diversity, selection and recombination in a canine transmissible cancer

    Andrea Strakova et al.
    Genetics of a canine transmissible tumour show how the world’s oldest cancer “metastasised” through the global dog population – and captured, maintained and rearranged its mitochondrial DNA along the way.
    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. Human Biology and Medicine
    2. Immunology and Inflammation

    Expansion of intestinal Prevotella copri correlates with enhanced susceptibility to arthritis

    Jose U Scher et al.
    The sequencing of microbial genomes reveals that the presence of a particular microbial species in the gut may increase the risk of the autoimmune disease rheumatoid arthritis.
    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. Cell Biology

    Genome-wide interrogation of extracellular vesicle biology using barcoded miRNAs

    Albert Lu et al.
    A screen using artificially barcoded, exosomal microRNAs, paired with CRISPR guide RNAs, helped identify new players in multivesicular endosome exocytosis and a role for Wnt signaling.
    1. Plant Biology

    Host-induced bacterial cell wall decomposition mediates pattern-triggered immunity in Arabidopsis

    Xiaokun Liu et al.
    Arabidopsis lysozyme LYS1 generates soluble peptidoglycan fragments to mediate pattern-triggered immunity.

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