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    1. Chromosomes and Gene Expression
    2. Structural Biology and Molecular Biophysics

    Analysis of the PcrA-RNA polymerase complex reveals a helicase interaction motif and a role for PcrA/UvrD helicase in the suppression of R-loops

    Inigo Urrutia-Irazabal et al.
    RNA polymerase recruits the PcrA DNA helicase via a conserved interaction motif in order to remove R-loops and prevent conflicts with replication.
    1. Evolutionary Biology
    2. Genetics and Genomics

    Universal and taxon-specific trends in protein sequences as a function of age

    Jennifer E James et al.
    Ancient protein domains remain shaped by amino acid availability during early life, while young animal proteins are shaped by a need for high intrinsic structural disorder.
    1. Microbiology and Infectious Disease

    Respiratory tissue-associated commensal bacteria offer therapeutic potential against pneumococcal colonization

    Soner Yildiz et al.
    A respiratory tissue-associated commensal Lactobacillus strain confers colonization resistance to Streptococcus pneumoniae, when applied therapeutically in a post influenza virus super-infection model.
    1. Biochemistry and Chemical Biology

    Transport of DNA within cohesin involves clamping on top of engaged heads by Scc2 and entrapment within the ring by Scc3

    James E Collier et al.
    Rigorous biochemical and structural analyses reveal the precise topology of cohesin's association with DNA and suggest a mechanism for how DNA is transported inside the ring.
    1. Microbiology and Infectious Disease

    A conserved cell division protein directly regulates FtsZ dynamics in filamentous and unicellular actinobacteria

    Félix Ramos-León et al.
    Identification of a novel regulator that directly influences the assembly and function of the cell division machinery in industrially and medically important bacteria.
    1. Structural Biology and Molecular Biophysics

    Structure and mechanism of the Mrp complex, an ancient cation/proton antiporter

    Julia Steiner, Leonid Sazanov
    Structure of the Mrp antiporter, an ancestor of respiratory complex I, suggests a mechanism of coupling between cation and proton translocation, applicable to a large family of related membrane proteins.
    1. Chromosomes and Gene Expression

    Distinct interactions of eIF4A and eIF4E with RNA helicase Ded1 stimulate translation in vivo

    Suna Gulay et al.
    Interactions of eIF4A and eIF4E with specific amino-acids in the N-terminal domain of DEAD-box helicase Ded1 enhance bulk polysome assembly and translation of reporter mRNAs with structured leaders in vivo.
    1. Microbiology and Infectious Disease

    Maturing Mycobacterium smegmatis peptidoglycan requires non-canonical crosslinks to maintain shape

    Catherine Baranowski et al.
    Polar elongating mycobacteria (Mycobacterium smegmatis) require specific cell wall chemistries, those catalyzed by targets of critical antibiotics, to maintain rod shape at aging sites of the bacillus.
    1. Biochemistry and Chemical Biology

    Enterococcus faecium secreted antigen A generates muropeptides to enhance host immunity and limit bacterial pathogenesis

    Byungchul Kim et al.
    Enterococci faecium encodes unique peptidoglycan composition and remodeling activity that activates host immunity.
    1. Developmental Biology

    Hedgehog signaling patterns the oral-aboral axis of the mandibular arch

    Jingyue Xu et al.
    SHH signaling acts through FOXF1/2 transcription factors and antagonizes BMP signaling to specify oral fate and pattern the oral-aboral axis of the mandibular arch to ensure proper formation of jaws.