3,091 results found
    1. Biochemistry and Chemical Biology
    2. Neuroscience

    Complementary shifts in photoreceptor spectral tuning unlock the full adaptive potential of ultraviolet vision in birds

    Matthew B Toomey et al.
    Birds that see ultraviolet light tune the sensitivity of their short-wavelength photoreceptors with colored filters to maximize the number of colors they can see.
    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. Evolutionary Biology

    Birds land reliably on complex surfaces by adapting their foot-surface interactions upon contact

    William RT Roderick et al.
    When landing, Pacific parrotlets exhibit stereotyped leg and wing dynamics regardless of perch diameter and texture, but foot and claw kinematics become surface-specific upon touchdown to successfully grasp the perch.
    1. Computational and Systems Biology
    2. Neuroscience

    A kinematic synergy for terrestrial locomotion shared by mammals and birds

    Giovanna Catavitello et al.
    General principles of the limb segment control for terrestrial locomotion have emerged in evolution and highlight the existence of the laws of biological motion that apply to various animal species.
    1. Biochemistry and Chemical Biology
    2. Cell Biology

    Lysosomal membrane glycoproteins bind cholesterol and contribute to lysosomal cholesterol export

    Jian Li, Suzanne R Pfeffer
    LAMP proteins, the major glycoproteins of the lysosome membrane, bind cholesterol directly and specifically, and interact with NPC1 and NPC2 proteins as part of the lysosomal cholesterol export process.
    1. Immunology and Inflammation

    Empty conformers of HLA-B preferentially bind CD8 and regulate CD8+ T cell function

    Jie Geng et al.
    HLA-B*35:01 molecules that are peptide-deficient are thermostable, bind CD8 with higher affinity than their peptide-filled versions, accumulate at immunological synapses and enhance antigen-specific CD8+ T cell immune responses.
    1. Cell Biology

    Bid maintains mitochondrial cristae structure and function and protects against cardiac disease in an integrative genomics study

    Christi T Salisbury-Ruf et al.
    An integrative approach, combining genetic mouse and large-scale human genetics studies, was used to reveal a novel role for the Bcl-2 protein Bid in maintenance of mitochondrial function that alters susceptibility to myocardial infarction.
    1. Cancer Biology

    Replication Study: BET bromodomain inhibition as a therapeutic strategy to target c-Myc

    Fraser Aird et al.
    Editors' Summary: This Replication Study has reproduced important parts of the original paper.
    1. Biochemistry and Chemical Biology
    2. Chromosomes and Gene Expression

    Highly efficient 5' capping of mitochondrial RNA with NAD+ and NADH by yeast and human mitochondrial RNA polymerase

    Jeremy G Bird et al.
    Eukaryotic mitochondrial RNA polymerases cap RNA with NAD with much higher efficiencies than nuclear RNA polymerase II; as a consequence, mitochondrial RNAs have remarkably high levels of NAD capping.

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