3,655 results found
    1. Evolutionary Biology

    A non-archaeopterygid avialan theropod from the Late Jurassic of southern Germany

    Oliver WM Rauhut et al.
    A new taxon from the Late Jurassic of southern Germany represents the second volant bird known from that time period and documents the improvement of flapping flight in bird evolution.
    1. Evolutionary Biology
    2. Genetics and Genomics

    Immune genes are hotspots of shared positive selection across birds and mammals

    Allison J Shultz, Timothy B Sackton
    Pathogens, particularly viruses, target the same genes over deep evolutionary time, resulting in shared signatures of positive selection and transcriptional responses at the same genes.
    1. Ecology
    2. Neuroscience

    Select forelimb muscles have evolved superfast contractile speed to support acrobatic social displays

    Matthew J Fuxjager et al.
    In situ measurements of muscular twitch speed reveal one of the fastest vertebrate limb muscles on record, which evolved in association with extravagant courtship displays that include rapid limb movements.
    1. Stem Cells and Regenerative Medicine

    Neuroepithelial Stem Cells: The many roles of C1q

    Mark Noble, Christoph Pröschel
    The ability of C1q to bind to a variety of receptors has implications for signaling biology, spinal cord injury and, possibly, the evolution of the complement system.
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    1. Structural Biology and Molecular Biophysics

    Screening of candidate substrates and coupling ions of transporters by thermostability shift assays

    Homa Majd et al.
    It is technically difficult to identify transport proteins, but here a method is presented that exploits the principle that they are stabilized in detergent solution when they bind their substrate.
    1. Computational and Systems Biology
    2. Evolutionary Biology

    Evidence for a common evolutionary rate in metazoan transcriptional networks

    Anne-Ruxandra Carvunis et al.
    Transcriptional regulation evolves at indistinguishable rates in mammals, birds and insect lineages despite large differences in underlying rates of sequence evolution.
    1. Structural Biology and Molecular Biophysics

    Intraflagellar Transport: Moving proteins along in the cilium

    Narcis Adrian Petriman, Esben Lorentzen
    The structures of the bovine and human BBSome reveal that a conformational change is required to recruit the complex to the ciliary membrane.
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    1. Biochemistry and Chemical Biology

    Convergent Evolution: Shaping the import system of mitochondria

    Kostas Tokatlidis
    Evidence is accumulating that unrelated species have independently evolved the same way of importing proteins in their mitochondria.
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    1. Developmental Biology

    Evolution: The beat goes on

    Tobias Wang
    Why is the alligator heart so similar to the hearts of birds and mammals?
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    1. Structural Biology and Molecular Biophysics

    Molecular Chaperones: Confirmation for conformational selection

    Yajun Jiang, Charalampos G Kalodimos
    NMR studies settle part of a long-standing debate about the mechanism used by the Hsp70 chaperone to recognize substrates.
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