A novel transgenic zebrafish line for red opsin expression in outer segments of photoreceptor cells
Sign Up to like & getrecommendations! Published in 2018 at "Developmental Dynamics"
DOI: 10.1002/dvdy.24631
Abstract: Background: Opsins are a group of light‐sensitive proteins present in photoreceptor cells, which convert the energy of photons into electrochemical signals, thus allowing vision. Given their relevance, we aimed to visualize the two red opsins… read more here.
Keywords: opsin; photoreceptor cells; outer segments; line ... See more keywords
Green‐shifting of SWS2A opsin sensitivity and loss of function of RH2‐A opsin in flounders, genus Verasper
Sign Up to like & getrecommendations! Published in 2018 at "Ecology and Evolution"
DOI: 10.1002/ece3.3745
Abstract: Abstract We identified visual opsin genes for three flounder species, including the spotted halibut (Verasper variegatus), slime flounder (Microstomus achne), and Japanese flounder (Paralichthys olivaceus). Structure and function of opsins for the three species were… read more here.
Keywords: rh2; sws2a opsin; function; opsin ... See more keywords
Geographic variation in opsin expression does not align with opsin genotype in Lake Victoria cichlid populations
Sign Up to like & getrecommendations! Published in 2019 at "Ecology and Evolution"
DOI: 10.1002/ece3.5411
Abstract: Abstract Sensory adaptation to the local environment can contribute to speciation. Aquatic environments are well suited for studying this process: The natural attenuation of light through water results in heterogeneous light environments, to which vision‐dependent… read more here.
Keywords: visual adaptation; variation; water; expression ... See more keywords
Optogenetic Potentials of Diverse Animal Opsins: Parapinopsin, Peropsin, LWS Bistable Opsin.
Sign Up to like & getrecommendations! Published in 2021 at "Advances in experimental medicine and biology"
DOI: 10.1007/978-981-15-8763-4_8
Abstract: Animal opsin-based pigments are light-activated G-protein-coupled receptors (GPCRs), which drive signal transduction cascades via G-proteins. Thousands of animal opsins have been identified, and molecular phylogenetic and biochemical analyses have revealed the unexpected diversity in selectivity… read more here.
Keywords: potentials diverse; optogenetic potentials; opsin; animal opsins ... See more keywords
Widespread functional opsin transduction in the rat cortex via convection-enhanced delivery optimized for horizontal spread
Sign Up to like & getrecommendations! Published in 2017 at "Journal of Neuroscience Methods"
DOI: 10.1016/j.jneumeth.2017.08.008
Abstract: BACKGROUND Widespread opsin expression in the cortex of rats, where transgenic models have not been established, is not practical to achieve with the traditional diffusion-based virus transduction methods (DBD). NEW METHOD We developed protocols for… read more here.
Keywords: cortex; delivery; method; convection enhanced ... See more keywords
Hydrogen/Deuterium Exchange Mass Spectrometry of Human Green Opsin Reveals a Conserved Pro-Pro Motif in Extracellular Loop 2 of Monostable Visual G Protein-Coupled Receptors.
Sign Up to like & getrecommendations! Published in 2017 at "Biochemistry"
DOI: 10.1021/acs.biochem.7b00165
Abstract: Opsins comprise the protein component of light sensitive G protein-coupled receptors (GPCRs) in the retina of the eye that are responsible for the transduction of light into a biochemical signal. Here, we used hydrogen/deuterium (H/D)… read more here.
Keywords: cone opsin; green cone; protein coupled; exchange ... See more keywords
Overcoming the loss of blue sensitivity through opsin duplication in the largest animal group, beetles
Sign Up to like & getrecommendations! Published in 2017 at "Scientific Reports"
DOI: 10.1038/s41598-017-00061-7
Abstract: Opsin proteins are fundamental components of animal vision whose structure largely determines the sensitivity of visual pigments to different wavelengths of light. Surprisingly little is known about opsin evolution in beetles, even though they are… read more here.
Keywords: blue sensitivity; sensitivity; overcoming loss; animal group ... See more keywords
Molecular Evolution of Ultraviolet Visual Opsins and Spectral Tuning of Photoreceptors in Anemonefishes (Amphiprioninae)
Sign Up to like & getrecommendations! Published in 2021 at "Genome Biology and Evolution"
DOI: 10.1093/gbe/evab184
Abstract: Abstract Many animals including birds, reptiles, insects, and teleost fishes can see ultraviolet (UV) light (shorter than 400 nm), which has functional importance for foraging and communication. For coral reef fishes, shallow reef environments transmit… read more here.
Keywords: rh2a; evolution; molecular evolution; opsin ... See more keywords
Opsin expression varies with reproductive state in the cichlid fish Astatotilapia burtoni.
Sign Up to like & getrecommendations! Published in 2021 at "Integrative and comparative biology"
DOI: 10.1093/icb/icab058
Abstract: Animals use visual communication to convey crucial information about their identity, reproductive status, and sex. Plasticity in the auditory and olfactory systems has been well-documented, however, fewer studies have tested for plasticity in the visual… read more here.
Keywords: ovulated females; expression; reproductive state; opsin ... See more keywords
Expression of a homologue of a vertebrate non-visual opsin Opn3 in the insect photoreceptors
Sign Up to like & getrecommendations! Published in 2022 at "Philosophical Transactions of the Royal Society B: Biological Sciences"
DOI: 10.1098/rstb.2021.0274
Abstract: Insect vision starts with light absorption by visual pigments based on opsins that drive Gq-type G protein-mediated phototransduction. Since Drosophila, the most studied insect in vision research, has only Gq-coupled opsins, the Gq-mediated phototransduction has… read more here.
Keywords: opsin; homologue; non visual; visual opsin ... See more keywords
Comprehensive Behavioral Analysis of Opsin 3 (Encephalopsin)-Deficient Mice Identifies Role in Modulation of Acoustic Startle Reflex
Sign Up to like & getrecommendations! Published in 2022 at "eNeuro"
DOI: 10.1523/eneuro.0202-22.2022
Abstract: Abstract Opsin-3 (Opn3, encephalopsin) was the first nonvisual opsin gene discovered in mammals. Since then, several Opn3 functions have been described, and in two cases (adipose tissue, smooth muscle) light sensing activity is implicated. In… read more here.
Keywords: opsin; role; deficient mice; acoustic startle ... See more keywords