334 results found
    1. Neuroscience

    Properties of multivesicular release from mouse rod photoreceptors support transmission of single-photon responses

    Cassandra L Hays et al.
    To improve the reliability of transmitting small single-photon voltage responses, rod photoreceptor cells release synaptic vesicles in regularly timed multivesicular events that are exquisitely sensitive to small voltage changes.
    1. Developmental Biology
    2. Neuroscience

    Large-scale phenotypic drug screen identifies neuroprotectants in zebrafish and mouse models of retinitis pigmentosa

    Liyun Zhang et al.
    Using a cross-species phenotypic drug discovery pipeline, compounds promoting rod photoreceptor survival in zebrafish and mouse models of retinitis pigmentosa were identified, evidence of additive effects of paired compounds and inhibition of PARP-dependent cell death suggest novel therapeutic strategies.
    1. Neuroscience

    A Cambrian origin for vertebrate rods

    Sabrina Asteriti et al.
    Several key functional features of jawed vertebrate rods are also present in lamprey photoreceptors, indicating that our Cambrian ancestors possessed dim light vision.
    1. Neuroscience

    A dual role for Cav1.4 Ca2+ channels in the molecular and structural organization of the rod photoreceptor synapse

    J Wesley Maddox et al.
    Ca2+ influx through Cav1.4 channels is required for the structural, but not the molecular organization of the rod photoreceptor synapse.
    1. Developmental Biology
    2. Evolutionary Biology

    Extraocular, rod-like photoreceptors in a flatworm express xenopsin photopigment

    Kate A Rawlinson et al.
    A new opsin receptor is light-sensitive and expressed in a unique type of photoreceptor in a flatworm that encloses over 400 sensory cilia within its cell membrane.
    1. Computational and Systems Biology
    2. Genetics and Genomics

    Information content differentiates enhancers from silencers in mouse photoreceptors

    Ryan Z Friedman et al.
    Silencers and enhancers targeted by a common transcription factor in photoreceptors are distinguished by the number and diversity of binding transcription factor binding sites they contain.
    1. Genetics and Genomics
    2. Neuroscience

    Epigenomic landscapes of retinal rods and cones

    Alisa Mo et al.
    Genome-wide analysis of DNA methylation and accessible chromatin shows that retinal rods and cones have distinct epigenomic features that reflect differences in their development and function.
    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. Cell Biology
    2. Physics of Living Systems

    Rod nuclear architecture determines contrast transmission of the retina and behavioral sensitivity in mice

    Kaushikaram Subramanian et al.
    Establishing retinal contrast transmission as a novel determinant of mammalian fitness, this research adds functional significance to a prominent exception of nuclear organization, previously described in nocturnal rod photoreceptor cells.
    1. Neuroscience

    Ca2+ sensor synaptotagmin-1 mediates exocytosis in mammalian photoreceptors

    Justin J Grassmeyer et al.
    The vesicular Ca2+ sensor synaptotagmin-1 regulates both fast phasic and slow tonic glutamate release at ribbon synapses of rod and cone photoreceptor cells.

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