Results 51 to 60 of about 23,776 (285)
Cellular and molecular neurobiology, 2020 In recent decades, a number of novel non-visual opsin photopigments belonging to the family of G protein- coupled receptors, likely involved in a number of non-image-forming processes, have been identified and characterized in cells of the inner retina ...
M. Guido +6 more
semanticscholar +1 more source
The visual pigment xenopsin is widespread in protostome eyes and impacts the view on eye evolution
eLife, 2020 Photoreceptor cells in the eyes of Bilateria are often classified into microvillar cells with rhabdomeric opsin and ciliary cells with ciliary opsin, each type having specialized molecular components and physiology.
Clemens Christoph Döring +4 more
doaj +1 more source
Loss of Melanopsin (OPN4) Leads to a Faster Cell Cycle Progression and Growth in Murine Melanocytes
Current Issues in Molecular Biology, 2021 Skin melanocytes harbor a complex photosensitive system comprised of opsins, which were shown, in recent years, to display light- and thermo-independent functions.
Leonardo Vinícius Monteiro de Assis +5 more
doaj +1 more source
Sequence Evolution, Structure and Dynamics of Transmembrane Proteins: Rhodopsin [PDF]
arXiv, 2023 Rhodopsin is a G-protein coupled receptor found in retinal rod cells, where it mediates monocrhromatic vision in dim light. It is one of the most studied proteins with thousands of reviewed entries in Uniprot. It has seven transmembrane segments, here examined for their hydrophobic character, and how that has evolved from chickens to humans.
arxiv
A Go-type opsin mediates the shadow reflex in the annelid Platynereis dumerilii
BMC Biology, 2018 Background The presence of photoreceptive molecules outside the eye is widespread among animals, yet their functions in the periphery are less well understood.
Thomas Ayers +4 more
doaj +1 more source
BMC Ecology and Evolution, 2022 Background Visual opsins are expressed in the compound eyes and ocelli of insects and enable light detection. Three distinct phylogenetic groups of visual opsins are found in insects, named long (LW), short (SW) and ultraviolet (UV) wavelength sensitive ...
Quentin Guignard +2 more
doaj +1 more source
Ultrafast Transient Absorption Spectra and Kinetics of Rod and Cone Visual Pigments
Molecules, 2023 Rods and cones are the photoreceptor cells containing the visual pigment proteins that initiate visual phototransduction following the absorption of a photon.
Arjun Krishnamoorthi +3 more
doaj +1 more source
Non-Scanning Fiber-Optic Near-Infrared Beam Led to Two-Photon Optogenetic Stimulation In-Vivo [PDF]
PLoS ONE 9(11): e111488, 2016 Stimulation of specific neurons expressing opsins in a targeted region to manipulate brain function has proved to be a powerful tool in neuroscience. However, the use of visible light for optogenetic stimulation is invasive due to low penetration depth and tissue damage owing to larger absorption and scattering.
arxiv +1 more source
Tip-Enhanced Infrared Difference-Nanospectroscopy of the Proton Pump Activity of Bacteriorhodopsin in Single Purple Membrane Patches [PDF]
Nano Lett.2019, 19, 3104-3114, 2019 Photosensitive proteins embedded in the cell membrane (about 5 nm thickness) act as photoactivated proton pumps, ion gates, enzymes, or more generally, as initiators of stimuli for the cell activity. They are composed of a protein backbone and a covalently bound cofactor (e.g.
arxiv +1 more source
Frontiers in Genetics, 2021 The emerald ash borer (EAB), Agrilus planipennis, is a highly destructive quarantine pest. The olfactory and visual systems of A. planipennis play different but critical roles at newly emerged and sexually mature stages; however, the molecular basis ...
Sifan Shen +9 more
doaj +1 more source