11 results found
    1. Structural Biology and Molecular Biophysics

    The primary structural photoresponse of phytochrome proteins captured by a femtosecond X-ray laser

    Elin Claesson et al.
    Time-resolved crystallography provides insight into the photochemical reactions in photoreceptor proteins, explaining the earliest steps of how plants, fungi and bacteria sense red light.
    1. Structural Biology and Molecular Biophysics

    Phytochrome Photoreceptors: Rapid response

    Jon Hughes
    Extremely short X-ray pulses from a free-electron laser are helping to clarify how phytochromes respond to light, but puzzles remain.
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    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. Neuroscience

    The Na+/Ca2+, K+ exchanger NCKX4 is required for efficient cone-mediated vision

    Frans Vinberg et al.
    Molecular, genetic, and functional analysis is used to show that the olfactory Na+/Ca2+, K+ exchanger NCKX4 is expressed in cone photoreceptors and is critical for the wide operating range and high temporal resolution of cone-mediated vision.
    1. Neuroscience

    A subset of ipRGCs regulates both maturation of the circadian clock and segregation of retinogeniculate projections in mice

    Kylie S Chew et al.
    A single subpopulation of photoreceptors constitutes a shared node in the neural networks that regulate light-dependent maturation of the circadian clock and light-independent refinement of retinal ganglion cell projections to the brain.
    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.
    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

    Mouse rods signal through gap junctions with cones

    Sabrina Asteriti et al.
    Electrophysiological recordings show that cones in the eyes of mice are able to receive strong input from rods via gap junctions, supporting the view that this route plays an important role in vision.
    1. Developmental Biology

    A gonad-expressed opsin mediates light-induced spawning in the jellyfish Clytia

    Gonzalo Quiroga Artigas et al.
    Gamete release in the jellyfish Clytia is mediated by an opsin photopigment expressed in neurosecretory cells of the gonad ectoderm, which release an oocyte maturation hormone in response to light.
    1. Neuroscience

    Optocontrol of glutamate receptor activity by single side-chain photoisomerization

    Viktoria Klippenstein et al.
    Introduction of single photoswitchable unnatural amino acid into a neuronal receptor provides reversible, rapid and robust control of its activity by light, representing an important contribution to the fast expanding field of optopharmacology.

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