1,761 results found
    1. Evolutionary Biology
    2. Genetics and Genomics

    Bedrock radioactivity influences the rate and spectrum of mutation

    Nathanaëlle Saclier et al.
    Subterranean isopods endemic to regions with large igneous rock formations have a higher mutation rate and display an excess of mutations that are typical of an oxidative stress.
    1. Chromosomes and Gene Expression
    2. Genetics and Genomics

    Universally high transcript error rates in bacteria

    Weiyi Li, Michael Lynch
    Fundamental details of the rate and molecular spectrum of transcript errors were revealed in four bacterial species, providing novel insights into transcriptional fidelity and RNA quality-control in prokaryotes.
    1. Evolutionary Biology

    Compensatory evolution drives multidrug-resistant tuberculosis in Central Asia

    Matthias Merker et al.
    The genetic make-up of dominating MDR-TB clades in Central Asia is shaped by programmatic and socio-economic changes that led to fixation of resistance and bacterial fitness related mutations in the Soviet era.
    1. Structural Biology and Molecular Biophysics

    Structural basis for histone variant H3tK27me3 recognition by PHF1 and PHF19

    Cheng Dong et al.
    Complex structures of Tudor domains of PHF1/19 with H3tK27me3 provide structural basis for preferential recognition of H3tK27me3 over canonical H3K27me3, implicating that H3tK27me3 might be a physiological ligand of PHF1/19.
    1. Evolutionary Biology
    2. Genetics and Genomics

    The distribution of fitness effects among synonymous mutations in a gene under directional selection

    Eleonore Lebeuf-Taylor et al.
    Synonymous mutations can have highly variable fitness effects stemming from changes in transcription, some of which contribute to adaptation.
    1. Evolutionary Biology

    Support for a clade of Placozoa and Cnidaria in genes with minimal compositional bias

    Christopher E Laumer et al.
    Protein coding genes strongly support a sister group relationship between Placozoa and Cnidaria to the exclusion of Bilateria, contradicting previous phylogenies, which have likely been misled by pervasive compositional heterogeneity.
    1. Immunology and Inflammation
    2. Structural Biology and Molecular Biophysics

    FcγRIIB-I232T polymorphic change allosterically suppresses ligand binding

    Wei Hu et al.
    A single-nucleotide I232T polymorphic change in FcγRIIB's transmembrane domain bends FcγRIIB's ectodomains toward cell membrane to allosterically hinder FcγRIIB's ligand association, providing novel molecular mechanism for functional loss of FcγRIIB-I232T.
    1. Evolutionary Biology
    2. Plant Biology

    Independent evolution of ancestral and novel defenses in a genus of toxic plants (Erysimum, Brassicaceae)

    Tobias Züst et al.
    A gain-of-function in a new chemical defense resulted in no trade-offs and and independent evolution between novel and ancestral defenses, suggesting low redundancy among different defensive chemicals.
    1. Epidemiology and Global Health
    2. Microbiology and Infectious Disease

    MERS-CoV spillover at the camel-human interface

    Gytis Dudas et al.
    MERS-CoV infections in the Arabian Peninsula are the result of several hundred spillover events from viruses circulating in camels into the human population.
    1. Developmental Biology
    2. Structural Biology and Molecular Biophysics

    Engineering a conserved RNA regulatory protein repurposes its biological function in vivo

    Vandita D Bhat et al.
    Motif length plays a critical role in the specification of biological function within a conserved family of RNA-binding proteins.

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