22 results found
    1. Ecology

    A SLC4 family bicarbonate transporter is critical for intracellular pH regulation and biomineralization in sea urchin embryos

    Marian Y Hu et al.
    Cellular carbon accumulation systems are a fundamental prerequisite for biomineralization to stabilize pH and to supply inorganic carbon for CaCO3 precipitation under changing environmental conditions.
    1. Immunology and Inflammation

    IL17 factors are early regulators in the gut epithelium during inflammatory response to Vibrio in the sea urchin larva

    Katherine M Buckley et al.
    Expression of two highly regulated subfamilies of the complex multigene family encoding IL-17 cytokines in the purple sea urchin are sequentially activated in a larval gut-associated inflammation model and modulate downstream gene expression in the gut epithelium.
    1. Immunology and Inflammation

    Cytokines: A gut response

    Matthew L Nicotra
    Unexpected findings from the immune system of sea urchin larvae potentially provide insights into immune signaling in ancestral lifeforms.
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  1. Eph and Ephrin function in dispersal and epithelial insertion of pigmented immunocytes in sea urchin embryos

    Oliver A Krupke et al.
    Eph receptor signaling commonly excludes migrating embryonic cells from regions of high ligand density; however, in sea urchin embryos pigmented immunocytes are attracted to regions expressing high levels of Ephrin.
    1. Evolutionary Biology
    2. Genetics and Genomics

    Ancient origins of arthropod moulting pathway components

    André Luiz de Oliveira et al.
    Evolutionary reconstruction of the ecdysis pathway shows that its major elements are present in the majority of metazoans, providing evidence that they originated much earlier than currently assumed.
    1. Developmental Biology
    2. Evolutionary Biology

    Functional divergence of paralogous transcription factors supported the evolution of biomineralization in echinoderms

    Jian Ming Khor, Charles A Ettensohn
    A gene duplication event has permitted the functional specialization of a homeodomain transcription factor through changes in exon-intron organization and these changes have supported the evolution of a major, phylum-level morphological novelty.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    How lamina-associated polypeptide 1 (LAP1) activates Torsin

    Brian A Sosa et al.
    LAP1 adopts an AAA+ like fold that, while unable to bind nucleotide, can enhance ATPase activity in the neighboring TorsinA protomer in an unusual heterohexameric ring, via an arginine finger.
    1. Genetics and Genomics
    2. Neuroscience

    Co-expression of xenopsin and rhabdomeric opsin in photoreceptors bearing microvilli and cilia

    Oliver Vöcking et al.
    The recently characterized opsin group of xenopsins is likely a major player in animal eye evolution and may have been present in an ancient, highly plastic eye photoreceptor cell type.
    1. Structural Biology and Molecular Biophysics
    2. Cell Biology

    CatSperζ regulates the structural continuity of sperm Ca2+ signaling domains and is required for normal fertility

    Jean-Ju Chung et al.
    A new component, CatSper zeta, is required for continuous alignment of the calcium channel along the sperm's tail and is crucial for normal sperm swimming behavior and fertility.
    1. Chromosomes and Gene Expression
    2. Genetics and Genomics

    ketu mutant mice uncover an essential meiotic function for the ancient RNA helicase YTHDC2

    Devanshi Jain et al.
    The mouse gene Ythdc2 exemplifies an evolutionarily ancient family of crucial regulators of the transition from germline stem cell divisions to meiosis.

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