Results 11 to 20 of about 18,496 (258)
Opsin vs opsin: new materials for biotechnological applications [PDF]
Journal of Applied Physics, 2014 The need of new diagnostic methods satisfying, as an early detection, a low invasive procedure and a cost-efficient value, is orienting the technological research toward the use of bio-integrated devices, in particular bio-sensors.
Alfinito, E., Reggiani, L.
core +2 more sources
Opsin evolution in the Ambulacraria [PDF]
Marine Genomics, 2015 Opsins - G-protein coupled receptors involved in photoreception - have been extensively studied in the animal kingdom. The present work provides new insights into opsin-based photoreception and photoreceptor cell evolution with a first analysis of opsin ...
A. Valero-Gracia +52 more
core +5 more sources
Molecular Biology and Evolution, 2022 Abstract Opsins, the protein moieties of animal visual photo-pigments, have emerged as moonlighting proteins with diverse, light-dependent and -independent physiological functions. This raises the need to revise some basic assumptions concerning opsin expression, structure, classification, and evolution.
Roberto Feuda +2 more
openaire +3 more sources
Genome Biol EvolAbstract In this study, we explored the diversity and evolution of opsins using meta-omic data from the Tara Oceans and Tara Polar Circle expeditions, one of the largest marine datasets available. By using sequence similarity methods and phylogenetic analyses, we identified opsins across the different metazoan groups.
De Vivo G +3 more
europepmc +2 more sources
Current Biology, 2002 What are opsins? Opsins are generally considered members of the superfamily of G-protein coupled receptors. But not all opsins activate a G-protein. Their distinguishing features are a 7 transmembrane α-helical structure, and an ability to bind a vitamin A chromophore, retinaldehyde, using a lysine in the 7th α-helix.
Foster, Russell, Bellingham, James
openaire +3 more sources
Pinopsin Regulates Melatonin Production and Daily Locomotor Activity: Functional Insights From Gene-Edited Xenopus Tadpoles. [PDF]
J Pineal ResABSTRACT Circadian rhythm alignment depends on environmental light detection via opsins. Pinopsin, originally identified in the pineal organ of birds and later in amphibian pineal complex and eyes, may play a role in this process, though its function has not been genetically tested.
Heshami N +4 more
europepmc +2 more sources
The First Opsins Prediction in Achatina fulica Genome
Biology and Life Sciences Forum, 2022 The variety of spectral properties of visual pigments is provided mainly by the amino acid sequences of their protein component, the so-called visual opsins.
Irina N. Dominova +2 more
doaj +1 more source
Retinal cone photoreceptors of the deer mouse Peromyscus maniculatus : development, topography, opsin expression and spectral tuning [PDF]
, 2013 A quantitative analysis of photoreceptor properties was performed in the retina of the nocturnal deer mouse, Peromyscus maniculatus, using pigmented (wildtype) and albino animals.
Arbogast, Patrick +2 more
core +6 more sources
From the Sea for the Sight: Marine Derived Products for Human Vision
Frontiers in Aging Neuroscience, 2022 Visual impairment, at different degrees, produce a reduction of patient wellness which negatively impact in many aspects of working and social activities. Eye diseases can have common cellular damages or dysfunctions (e.g., inflammation, oxidative stress,
Simona Brillante +3 more
doaj +1 more source
Creation of photocyclic vertebrate rhodopsin by single amino acid substitution
eLife, 2022 Opsins are universal photoreceptive proteins in animals and can be classified into three types based on their photoreaction properties. Upon light irradiation, vertebrate rhodopsin forms a metastable active state, which cannot revert back to the original
Kazumi Sakai +3 more
doaj +1 more source