200 results found
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    CarD uses a minor groove wedge mechanism to stabilize the RNA polymerase open promoter complex

    Brian Bae et al.
    The crystal structure of Thermus transcription activation complexes containing the transcriptional activator CarD reveals a new mechanism for the activation of transcription.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    Structure of a bacterial RNA polymerase holoenzyme open promoter complex

    Brian Bae et al.
    The crystal structure of bacterial RNA polymerase bound to the transcription bubble reveals key features that support the formation of a double-strand/single-strand DNA junction at the upstream edge of the −10 element where bubble formation initiates.
    1. Ecology

    Oxygen isotopes suggest elevated thermometabolism within multiple Permo-Triassic therapsid clades

    Kévin Rey et al.
    Two therapsid clades, dicynodonts and cynodonts, independently acquired and developed an endotherm-like thermoregulation during the Late Permian period, that probably helped them to survive the major global climate and environmental fluctuations of the end-Permian.
    1. Ecology
    2. Epidemiology and Global Health

    Mycobacterium ulcerans dynamics in aquatic ecosystems are driven by a complex interplay of abiotic and biotic factors

    Andrés Garchitorena et al.
    Different transmission routes of Mycobacterium ulcerans to aquatic organisms may prevail depending on local physico-chemical conditions.
    1. Genetics and Genomics

    Nuclear genomic signals of the ‘microturbellarian’ roots of platyhelminth evolutionary innovation

    Christopher E Laumer et al.
    A phylogeny of all major groups of flatworms based on hundreds of genes sheds new light the early evolution of this important metazoan phylum, with particular significance for the original of vertebrate parasitism.
    1. Ecology

    Biodiversity mediates the effects of stressors but not nutrients on litter decomposition

    Léa Beaumelle et al.
    The consequences of real-world biodiversity change for ecosystem functioning depend on the type of global change driver and can be particularly significant when human activities decrease biodiversity.
    1. Neuroscience

    Correcting for physical distortions in visual stimuli improves reproducibility in zebrafish neuroscience

    Timothy W Dunn, James E Fitzgerald
    Computational analyses quantitatively account for optical refraction at air-water interfaces to enable visual neuroscientists to present distortion-free stimuli to underwater animals.
    1. Neuroscience

    An insect-like mushroom body in a crustacean brain

    Gabriella Hannah Wolff et al.
    An insect-like mushroom body in one group of crustaceans, the mantis shrimps (Stomatopoda), suggests either an ancient origin of this center and its reduction and loss in other crustaceans, or an extraordinary example of convergent evolution with the insect mushroom body.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    Crystal structures of DNA polymerase I capture novel intermediates in the DNA synthesis pathway

    Nicholas Chim et al.
    Insight into the mechanism of DNA synthesis is provided by the crystal structures of DNA polymerase intermediates.
    1. Computational and Systems Biology

    Origin of a folded repeat protein from an intrinsically disordered ancestor

    Hongbo Zhu et al.
    Minimal changes allow an ancestral, unfolded peptide to adopt a known fold by repetition, illuminating a possible path for the emergence of folded proteins at the origin of life.

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