432 results found
    1. Plant Biology

    A novel bivalent chromatin associates with rapid induction of camalexin biosynthesis genes in response to a pathogen signal in Arabidopsis

    Kangmei Zhao et al.
    A previously uncharacterized type of bivalent chromatin plays an important role controlling the timely induction of genes involved in making a potent defense metabolite upon a pathogen signal in Arabidopsis.
    1. Evolutionary Biology
    2. Genetics and Genomics

    Evolutionary dynamics of circular RNAs in primates

    Gabriela Santos-Rodriguez et al.
    An analysis of the genomic features that distinguish conserved from species-specific circular RNAs reveals that the expansion of the downstream intron by insertion of retrotransposons stabilizes circular RNAs' production across 30+ millions years of evolution.
    1. Microbiology and Infectious Disease
    2. Physics of Living Systems

    Inhibition of SARS-CoV-2 polymerase by nucleotide analogs from a single-molecule perspective

    Mona Seifert et al.
    High-throughput and ultra-stable magnetic tweezers reveal that Remdesivir induces a long-lived backtrack pause upon incorporation by the coronavirus polymerase, and SARS-CoV-2 is able to evade interferon-induced antiviral ddhCTP.
    1. Medicine
    2. Stem Cells and Regenerative Medicine

    Adult stem cell-derived complete lung organoid models emulate lung disease in COVID-19

    Courtney Tindle et al.
    An integrated stem cell-based disease modeling and computational approach demonstrates how proximal airway epithelium is critical for SARS-CoV-2 infectivity and distal alveolar cells are critical for simulating the host responses.
    1. Chromosomes and Gene Expression
    2. Genetics and Genomics

    Comparison of transcriptional initiation by RNA polymerase II across eukaryotic species

    Natalia Petrenko, Kevin Struhl
    Although the preinitiation complex for transcriptional initiation by RNA polymerase II contains highly conserved general transcription factors, there are kinetic and compositional differences in the initiation process among eukaryotic species.
    1. Chromosomes and Gene Expression
    2. Structural Biology and Molecular Biophysics

    Structure and dynamics of the chromatin remodeler ALC1 bound to a PARylated nucleosome

    Luka Bacic et al.
    Analysis of conformational heterogeneity in cryo-EM data by a recently developed deep learning method reveals the structure and dynamics of the oncogenic chromatin remodeler ALC1 bound to a poly-ADP-ribosylated nucleosome.
    1. Medicine
    2. Microbiology and Infectious Disease

    Non-nucleoside reverse transcriptase inhibitor-based combination antiretroviral therapy is associated with lower cell-associated HIV RNA and DNA levels compared to protease inhibitor-based therapy

    Alexander O Pasternak et al.
    In two independent cohorts, NNRTI-based cART regimens are associated with significantly lower cell-associated HIV RNA levels than PI-based regimens, suggesting more potent suppression of residual virus replication by NNRTI-based regimens.
    1. Biochemistry and Chemical Biology

    Witnessing the structural evolution of an RNA enzyme

    Xavier Portillo et al.
    An RNA enzyme is caught in the act of evolving a new structural domain within its active site, resulting in enhanced catalytic function.
    1. Genetics and Genomics
    2. Neuroscience

    A zebrafish screen reveals Renin-angiotensin system inhibitors as neuroprotective via mitochondrial restoration in dopamine neurons

    Gha-Hyun J Kim et al.
    In vivo dopamine neuron imaging-based neuroprotective small molecule screen in larval zebrafish and mechanistic investigation using conditional CRISPR knockout and cell-type-specific RNA-seq analysis, coupled with cross-species analyses including human clinical data interrogation, uncover potential disease-modifying therapeutics for Parkinson's disease (PD).
    1. Chromosomes and Gene Expression

    SUV39 SET domains mediate crosstalk of heterochromatic histone marks

    Alessandro Stirpe et al.
    Clr4, a highly conserved SUV39 histone methyltransferase, requires its SET domain to sense histone H3K14 ubiquitination in order to maintain heterochromatin and H3K9 methylation.

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