9,293 results found
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    Structural basis of nucleic-acid recognition and double-strand unwinding by the essential neuronal protein Pur-alpha

    Janine Weber et al.
    The crystal structure of Pur-alpha in complex with DNA reveals its molecular mechanisms of nucleic-acid binding and unwinding, allowing for a better understanding of its essential role in neurons.
    1. Developmental Biology

    Antagonistic control of Caenorhabditis elegans germline stem cell proliferation and differentiation by PUF proteins FBF-1 and FBF-2

    Xiaobo Wang et al.
    Complementary effects of FBF-1 and FBF-2 on germline stem cell dynamics result from their distinct cooperation with mRNA deadenylase resulting in the opposite effects on the shared target mRNAs.
    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.
    1. Biochemistry and Chemical Biology

    RNA-binding proteins distinguish between similar sequence motifs to promote targeted deadenylation by Ccr4-Not

    Michael W Webster et al.
    Biochemical reconstitution of deadenylation and analysis of binding kinetics reveals how RNA-binding proteins select their mRNA targets.
    1. Evolutionary Biology

    Contingency and chance erase necessity in the experimental evolution of ancestral proteins

    Victoria Cochran Xie et al.
    Replicating experimental evolution from ancestral proteins shows that historical contingency steadily overwhelms chance and necessity as the primary cause of evolutionary variation in molecular sequences on long phylogenetic timescales.
    1. Biochemistry and Chemical Biology

    Inter-membrane association of the Sec and BAM translocons for bacterial outer-membrane biogenesis

    Sara Alvira et al.
    The protein translocation apparatus of the inner- (Sec) and outer-membrane (BAM) interact to form a trans-periplasmic super-complex capable of long-range, PMF-dependent conformational changes to facilitate efficient outer-membrane protein maturation.
    1. Structural Biology and Molecular Biophysics
    2. Computational and Systems Biology

    Codon-level information improves predictions of inter-residue contacts in proteins by correlated mutation analysis

    Etai Jacob et al.
    Correlated mutation analysis using a combination of amino acid and codon sequence alignments improves predictions of amino acid residue contacts in proteins.
    1. Epidemiology and Global Health

    Proteome-wide analysis of a malaria vaccine study reveals personalized humoral immune profiles in Tanzanian adults

    Flavia Camponovo et al.
    Malaria pre-exposed volunteers exhibit large breadth of humoral immune responses, with strong variation between individuals, which might compromise vaccine-induced humoral immune response due to natural imprinting.
    1. Neuroscience

    Freezing suppression by oxytocin in central amygdala allows alternate defensive behaviours and mother-pup interactions

    Elizabeth Rickenbacher et al.
    Oxytocin in the amygdala suppresses freezing of mothers when exposed to a threat in the presence of their offspring, allowing for pup protection and transmission of information about danger from mothers to pups.
    1. Chromosomes and Gene Expression
    2. Immunology and Inflammation

    Tet2 and Tet3 cooperate with B-lineage transcription factors to regulate DNA modification and chromatin accessibility

    Chan-Wang Lio et al.
    TET methylcytosine oxidases cooperate with B lineage-specific transcription factors to promote immunoglobulin gene rearrangement by depositing 5hmC, facilitating DNA demethylation and increasing chromatin accessibility at enhancers.

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