Results 21 to 30 of about 33,802 (359)
The two-photon reversible reaction of the bistable jumping spider rhodopsin-1 [PDF]
, 2019 Bistable opsins are photopigments expressed in both invertebrates and vertebrates. These light-sensitive G-protein-coupled receptors undergo a reversible reaction upon illumination.
Deupi, Xavier +7 more
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Structure and Conformation of the Carotenoids in Human Retinal Macular Pigment. [PDF]
PLoS ONE, 2015 Human retinal macular pigment (MP) is formed by the carotenoids lutein and zeaxanthin (including the isomer meso-zeaxanthin). MP has several functions in improving visual performance and protecting against the damaging effects of light, and MP levels are
Ana-Andreea Arteni +7 more
doaj +1 more source
Vitamin A deficiency affects gene expression in the Drosophila melanogaster head
G3: Genes, Genomes, Genetics, 2021 Insufficient dietary intake of vitamin A causes various human diseases. For instance, chronic vitamin A deprivation causes blindness, slow growth, impaired immunity, and an increased risk of mortality in children.
Deepshe Dewett +4 more
doaj +1 more source
Diagnosis of Retinitis Pigmentosa from Retinal Images [PDF]
International Journal of Electronics and Telecommunications, 2019 Retinitis pigmentosa is a genetic disorder that results in nyctalopia and its progression leads to complete loss of vision. The analysis and the study of retinal images are necessary, so as to help ophthalmologist in early detection of the retinitis ...
Giritharan Ravichandran +2 more
doaj +1 more source
Indian Journal of Ophthalmology, 2022 Background: The art of scleral buckle (SB) surgery is being largely forgotten. However, it still remains a good option for selected cases of rhegmatogenous retinal detachment.
Shobhit Varma +4 more
doaj +1 more source
Antioxidants, 2022 Ommochromes are pigments of invertebrates that exhibit oxidative stress protection. The aim of this study was to investigate ommochromes extracted from cephalopod’s skin for their ability to inhibit age-related-macular degeneration (AMD)-related factors ...
Luján Lidianys María Lewis +11 more
doaj +1 more source
Probing how initial retinal configuration controls photochemical dynamics in retinal proteins
EPJ Web of Conferences, 2013 The effects of the initial retinal configuration and the active isomerization coordinate on the photochemistry of retinal proteins (RPs) are assessed by comparing photochemical dynamics of two stable retinal ground state configurations (all-trans,15-anti
Sheves M. +6 more
doaj +1 more source
Molecular logic behind the three-way stochastic choices that expand butterfly colour vision. [PDF]
, 2016 Butterflies rely extensively on colour vision to adapt to the natural world. Most species express a broad range of colour-sensitive Rhodopsin proteins in three types of ommatidia (unit eyes), which are distributed stochastically across the retina.
Arikawa, Kentaro +5 more
core +1 more source
Spectral Tuning Mechanism of Primate Blue-sensitive Visual Pigment Elucidated by FTIR Spectroscopy
Scientific Reports, 2017 Protein-bound water molecules are essential for the structure and function of many membrane proteins, including G-protein-coupled receptors (GPCRs). Our prior work focused on studying the primate green- (MG) and red- (MR) sensitive visual pigments using ...
Kota Katayama +4 more
doaj +1 more source
Evolutionary ecology of opsin gene sequence, expression and repertoire. [PDF]
, 2017 Linking molecular evolution to biological function is a long-standing challenge in evolutionary biology. Some of the best examples of this involve opsins, the genes that encode the molecular basis of light reception.
Owens, Gregory L, Rennison, Diana J
core +1 more source