4,417 results found
    1. Biochemistry and Chemical Biology
    2. Genetics and Genomics

    Genome-wide dynamics of Pol II elongation and its interplay with promoter proximal pausing, chromatin, and exons

    Iris Jonkers, Hojoong Kwak, John T Lis
    The elongation rate of RNA Polymerase II varies greatly between and along genes, as this enzyme accelerates from stable pausing to rapid elongation within genes, and is influenced by CG-content, exons and chromatin.
    1. Immunology and Inflammation

    A novel pathway of LPS uptake through syndecan-1 leading to pyroptotic cell death

    Shigetoshi Yokoyama, Yan Cai ... Shioko Kimura
    A novel pathway was discovered for cellular uptake of LPS through secretory protein secretoglobin3A2 and a receptor syndecan-1, causing activation of non-canonical inflammasome pathway leading to pyroptosis of cancer cells.
    1. Biochemistry and Chemical Biology

    PPM1H phosphatase counteracts LRRK2 signaling by selectively dephosphorylating Rab proteins

    Kerryn Berndsen, Pawel Lis ... Dario R Alessi
    PPM1H protein phosphatase dephosphorylates Rab proteins modulating LRRK2 signalling.
    1. Immunology and Inflammation

    IL-2/JES6-1 mAb complexes dramatically increase sensitivity to LPS through IFN-γ production by CD25+Foxp3- T cells

    Jakub Tomala, Petra Weberova ... Marek Kovar
    Strong sustained IL-2 signal selective for CD25+ cells induces emergence of CD25+Foxp3- T cells producing IFN-γ in various organs causing enormous increase in the sensitivity to LPS.
    1. Cell Biology
    2. Evolutionary Biology

    Phylogenomic analysis supports the ancestral presence of LPS-outer membranes in the Firmicutes

    Luisa CS Antunes, Daniel Poppleton ... Simonetta Gribaldo
    Phylogenomics provides support for the Gram-positive type of bacterial cell envelope being a derived character that arose independently multiple times through loss of an ancestral outer membrane.
    1. Chromosomes and Gene Expression

    Condensin controls recruitment of RNA polymerase II to achieve nematode X-chromosome dosage compensation

    William S Kruesi, Leighton J Core ... Barbara J Meyer
    C. elegans equalizes the expression of X-chromosome genes between the sexes by reducing the recruitment of RNA polymerase II to promoters of X-linked genes in hermaphrodites, using a chromosome-restructuring complex called condensin.
    1. Evolutionary Biology

    Splicing repression allows the gradual emergence of new Alu-exons in primate evolution

    Jan Attig, Igor Ruiz de los Mozos ... Jernej Ule
    During evolutionary progression of Alu-exons, repressive U-tracts buffer sudden gains in 3' splice site strength and prevent inclusion of cryptic exons.
    1. Immunology and Inflammation

    Catalytic activity and autoprocessing of murine caspase-11 mediate noncanonical inflammasome assembly in response to cytosolic LPS

    Daniel C Akuma, Kimberly A Wodzanowski ... Igor E Brodsky
    Caspase-11 catalytic activity and autoprocessing play key roles upstream rather than downstream of its assembly into higher-order inflammasome complexes in response to cytosolic bacterial lipopolysaccharide.
    1. Biochemistry and Chemical Biology
    2. Physics of Living Systems

    Hsp70 chaperones are non-equilibrium machines that achieve ultra-affinity by energy consumption

    Paolo De Los Rios, Alessandro Barducci
    ATP consumption enables chaperones to exploit the different kinetic properties of their conformational states to exhibit a non-equilibrium affinity for their substrates that is orders of magnitude higher than its equilibrium value.
    1. Genetics and Genomics
    2. Microbiology and Infectious Disease

    The role of interspecies recombination in the evolution of antibiotic-resistant pneumococci

    Joshua C D'Aeth, Mark PG van der Linden ... The GPS Consortium
    Selection by national-level antibiotic consumption and vaccination trends drives atypical recombinations, frequently resulting in interspecies sequence exchange at many sites across a bacterial species’ chromosome.

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