Results 21 to 30 of about 28,928 (224)
S-opsin knockout mice with the endogenous M-opsin gene replaced by an L-opsin variant [PDF]
Visual Neuroscience, 2013 AbstractSpecific variants of human long-wavelength (L) and middle-wavelength (M) cone opsin genes have recently been associated with a variety of vision disorders caused by cone malfunction, including red-green color vision deficiency, blue cone monochromacy, myopia, and cone dystrophy. Strikingly, unlike disease-causing mutations in rhodopsin, most of
Scott H, Greenwald +4 more
openaire +2 more sources
The Evolution Of Colouration And Opsins In Tarantulas [PDF]
Proceedings of the Royal Society B: Biological Sciences, 2020 ABSTRACT Tarantulas paradoxically exhibit a diverse palette of vivid colouration despite their crepuscular to nocturnal habits. The evolutionary origin and maintenance of these colours remains a mystery. In this study, we reconstructed the ancestral states of both blue and green colouration in tarantula setae, and tested how these ...
Foley, Saoirse +2 more
openaire +3 more sources
Developmental dynamics of cone photoreceptors in the eel [PDF]
, 2009 Background: Many fish alter their expressed visual pigments during development. The number of retinal opsins expressed and their type is normally related to the environment in which they live.
Bowmaker, JK +11 more
core +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.
Glösmann Martin +8 more
core +2 more sources
BMC Biology, 2018 Background Animal opsins are light-sensitive G-protein-coupled receptors (GPCRs) that enable optogenetic control over the major heterotrimeric G-protein signaling pathways in animal cells.
Edward R. Ballister +3 more
doaj +1 more source
Mechanisms of Opsin Activation [PDF]
Journal of Biological Chemistry, 1996 Rhodopsin is constrained in an inactive conformation by interactions with 11-cis-retinal including formation of a protonated Schiff base with Lys296. Upon photoisomerization, major structural rearrangements that involve protonation of the active site Glu113 and cytoplasmic acidic residues, including Glu134, lead to the formation of the active form of ...
J, Buczyłko +3 more
openaire +2 more sources
High opsin diversity in a non-visual infaunal brittle star [PDF]
, 2014 peer reviewedIn metazoans, opsins are photosensitive proteins involved in both vision and non-visual photoreception. Echinoderms have no well-defined eyes but several opsin genes were found in the purple sea urchin (Strongylocentrotus purpuratus) genome.
Ullrich-Lüter, Esther +3 more
core +3 more sources
Analysis of the opsin repertoire in the Tardigrade Hypsibius dujardini provides insights into the evolution of opsin genes in Panarthropoda [PDF]
, 2014 Screening of a deeply sequenced transcriptome using Illumina sequencing as well as the genome of the tardigrade Hypsibius dujardini revealed a set of five opsin genes.
Hering, Lars, Mayer, Georg
core +2 more sources
Frontiers in Zoology, 2007 Background Recent genome sequence analysis in the red flour beetle Tribolium castaneum indicated that this highly crepuscular animal encodes only two single opsin paralogs: a UV-opsin and a long wavelength (LW)-opsin; however, these animals do not encode
Cook Tiffany A +5 more
doaj +1 more source
Number and distribution of mouse retinal cone photoreceptors: differences between an albino (Swiss) and a pigmented (C57/BL6) strain. [PDF]
PLoS ONE, 2014 We purpose here to analyze and compare the population and topography of cone photoreceptors in two mouse strains using automated routines, and to design a method of retinal sampling for their accurate manual quantification.
Arturo Ortín-Martínez +8 more
doaj +1 more source