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    1. Microbiology and Infectious Disease

    Application of human liver organoids as a patient-derived primary model for HBV infection and related hepatocellular carcinoma

    Elisa De Crignis et al.
    Human liver organoids provide a patient-derived platform to interrogate host and viral mechanisms of HBV replication, perform anti-HBV and toxicity drug screens, and investigate the molecular determinants of related tumorigenesis.
    1. Plant Biology

    Active suppression of a leaf meristem orchestrates determinate leaf growth

    John Paul Alvarez et al.
    A meristem acting at the margins of Arabidopsis leaves is suppressed by factors acting primarily in leaves and other determinate organs.
    1. Epidemiology and Global Health

    Coverage and system efficiencies of insecticide-treated nets in Africa from 2000 to 2017

    Samir Bhatt et al.
    Insecticide-treated net requirements for Africa have been underestimated, but mitigating for inefficiencies in net distributions can produce a cost effective path to universal coverage.
    1. Biochemistry and Chemical Biology
    2. Chromosomes and Gene Expression

    The target of the DEAH-box NTP triphosphatase Prp43 in Saccharomyces cerevisiae spliceosomes is the U2 snRNP-intron interaction

    Jean-Baptiste Fourmann et al.
    Prp43 binds to the pre-mRNA and contacts predominantly U2 proteins in the budding yeast spliceosome.
    1. Biochemistry and Chemical Biology
    2. Microbiology and Infectious Disease

    Transcription inhibition by the depsipeptide antibiotic salinamide A

    David Degen et al.
    Salinamide A exerts antibacterial activity by binding to the bridge-helix cap of bacterial RNA polymerase and allosterically inhibiting nucleotide addition
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    Single molecule analysis reveals reversible and irreversible steps during spliceosome activation

    Aaron A Hoskins et al.
    Single molecule experiments reveal competition between spliceosome activation and the discard of the triple small nuclear ribonucleoprotein complex.
    1. Structural Biology and Molecular Biophysics

    Complete dissection of transcription elongation reveals slow translocation of RNA polymerase II in a linear ratchet mechanism

    Manchuta Dangkulwanich et al.
    Quantification of all the major on- and off-pathway kinetic parameters in the transcription elongation cycle reveals that RNA polymerase II translocates slowly in a linear, non-branched Brownian ratchet mechanism.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    E. coli TraR allosterically regulates transcription initiation by altering RNA polymerase conformation

    James Chen et al.
    Cryo-electron microscopy structures, combined with biochemical experiments, show how the E. coli F element-encoded TraR protein regulates transcription initiation by altering RNA polymerase conformation and conformational heterogeneity.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    Human cytomegalovirus IE1 protein alters the higher-order chromatin structure by targeting the acidic patch of the nucleosome

    Qianglin Fang et al.
    Distinct binding of viral proteins to the same region on the nucleosome surface can result in contrasting changes to higher-order chromatin structure in the host cell.
    1. Chromosomes and Gene Expression
    2. Microbiology and Infectious Disease

    The primary σ factor in Escherichia coli can access the transcription elongation complex from solution in vivo

    Seth R Goldman et al.
    The sigma subunit of bacterial RNA polymerase, classically known as an initiation factor, can also operate as an elongation factor with effects that vary with growth phase.