727 results found
    1. Developmental Biology
    2. Evolutionary Biology

    Bacterial contribution to genesis of the novel germ line determinant oskar

    Leo Blondel et al.
    Evidence suggests that the oskar gene, a critical germ line determinant in insects, was formed by fusion of bacterial and eukaryotic sequences at least 450 million years ago.
    1. Developmental Biology
    2. Genetics and Genomics

    Dual histone methyl reader ZCWPW1 facilitates repair of meiotic double strand breaks in male mice

    Mohamed Mahgoub et al.
    The meiotic recombination landscape in vertebrates was re-engineered via the co-evolution of a dual histone H3K4/H3K36 methylation 'writer' PRDM9 and its 'reader' ZCWPW1 that facilitates efficient double strand break repair.
    1. Developmental Biology
    2. Immunology and Inflammation

    A single-cell survey of Drosophila blood

    Sudhir Gopal Tattikota et al.
    Single-cell RNA sequencing of Drosophila hemocytes in blood distinguishes various states within known blood cell types and implicates a novel role for fibroblast growth factor receptor signaling in inter-hemocyte crosstalk.
    1. Ecology

    Rarity is a more reliable indicator of land-use impacts on soil invertebrate communities than other diversity metrics

    Andrew Dopheide et al.
    Rarity metrics reveal pervasive negative impacts of agricultural land use on soil invertebrate communities, whereas widely-used richness and diversity metrics underestimate the magnitude of these impacts.
    1. Evolutionary Biology

    Convergent evolution of small molecule pheromones in Pristionchus nematodes

    Chuanfu Dong et al.
    Unexpected structural diversity of nematode small molecules, as revealed by high-resolution phylogenetic analysis, suggests recurrent biochemical innovation, a pattern that is probably typical across animals.
    1. Neuroscience

    Drosophila Synaptotagmin 7 negatively regulates synaptic vesicle release and replenishment in a dosage-dependent manner

    Zhuo Guan et al.
    Drosophila synaptotagmin 7 functions to restrict SV availability and release, but does not act as the Ca2+ sensor mediating the asynchronous release and facilitation remaining in synaptotagmin 1 mutants.
    1. Developmental Biology
    2. Stem Cells and Regenerative Medicine

    Adult chondrogenesis and spontaneous cartilage repair in the skate, Leucoraja erinacea

    Aleksandra Marconi et al.
    The ability of cartilaginous fishes to generate new cartilage through adulthood, and to spontaneously repair damaged cartilage, could shed light on novel cell-based therapies for cartilage injury in mammals.
    1. Biochemistry and Chemical Biology
    2. Evolutionary Biology

    Evolution of multifunctionality through a pleiotropic substitution in the innate immune protein S100A9

    Joseph L Harman et al.
    In the ancestor of mammals, a multifunctional innate immune protein evolved when a mutation enhanced the protein’s pro-inflammatory activity and proteolytic regulation without disrupting the protein’s antimicrobial activity.
    1. Microbiology and Infectious Disease

    Global phenotypic profiling identifies a conserved actinobacterial cofactor for a bifunctional PBP-type cell wall synthase

    Joel W Sher et al.
    A broadly useful phenotypic profiling dataset was generated and used to identify a cofactor required for a polar cell wall synthase in Corynebacterium glutamicum that is conserved throughout the Actinobacteria.
    1. Developmental Biology
    2. Genetics and Genomics

    Disparate expression specificities coded by a shared Hox-C enhancer

    Steve W Miller, James W Posakony
    Tucked within a well-known story of diverging gene function is a single enhancer encoding two inseparable specificities that regulates two adjacent genes, each with different spatiotemporal expression patterns.

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