269 results found
    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. Computational and Systems Biology
    2. Neuroscience

    Connectivity map of bipolar cells and photoreceptors in the mouse retina

    Christian Behrens et al.
    A quantitative analysis of the connectivity between photoreceptors and bipolar cells in the mouse retina based on electron microscopy data yields exceptions from established rules of outer retinal connectivity.
    1. Neuroscience

    Ciliary and rhabdomeric photoreceptor-cell circuits form a spectral depth gauge in marine zooplankton

    Csaba Verasztó et al.
    In a zooplankton larva, ciliary and rhabdomeric photoreceptor cells work antagonistically to form a spectral depth gauge.
    1. Neuroscience

    Human foveal cone photoreceptor topography and its dependence on eye length

    Yiyi Wang et al.
    Despite evidence of retinal stretching with eye growth, cone photoreceptor sampling density in the foveal center of humans actually increases with eye length.
    1. Genetics and Genomics

    Differing isoforms of the cobalamin binding photoreceptor AerR oppositely regulate photosystem expression

    Haruki Yamamoto et al.
    A novel B12 containing photoreceptor is synthesized as two different isoforms that interact with the same transcription factor, with one isoform directing activation and the other promoting repression of photosystem synthesis.
    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. Developmental Biology
    2. Chromosomes and Gene Expression

    Natural variation in stochastic photoreceptor specification and color preference in Drosophila

    Caitlin Anderson et al.
    Binding site affinity and transcription factor levels are finely tuned in nature to regulate stochastic expression, setting the ratio of alternative photoreceptor fates and determining color preference.
    1. Cell Biology
    2. Human Biology and Medicine

    Photoreceptor avascular privilege is shielded by soluble VEGF receptor-1

    Ling Luo et al.
    The eye produces a protein that inhibits the growth of blood vessels in the deep retina, which includes the photoreceptor layer, and disruption of this process can lead to blindness.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    Asymmetric activation mechanism of a homodimeric red light-regulated photoreceptor

    Geoffrey Gourinchas et al.
    Molecular insights to phytochrome activation and signal transduction over long distances enable the allosteric regulation of enzymatic effectors.
    1. Neuroscience

    S-cone photoreceptors in the primate retina are functionally distinct from L and M cones

    Jacob Baudin et al.
    Heterogeneity in perceptual sensitivity of human cone-mediated vision across wavelength originates in the cone photoreceptors, where S cones exhibit distinct functional properties in comparison to L and M cones.

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