Journal ArticleDOI
Exo-rhodopsin: a novel rhodopsin expressed in the zebrafish pineal gland
TLDR
Cahill et al. as mentioned in this paper reported identification of a novel opsin gene expressed in the zebrafish pineal gland, which has an endogenous circadian pacemaker entrained to environmental light-dark cycles.About:
This article is published in Molecular Brain Research.The article was published on 1999-11-10. It has received 142 citations till now. The article focuses on the topics: Rhodopsin & Opsin.read more
Citations
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Journal ArticleDOI
The spotted gar genome illuminates vertebrate evolution and facilitates human-teleost comparisons
Ingo Braasch,Andrew R. Gehrke,J. Joshua Smith,Kazuhiko Kawasaki,Tereza Manousaki,Jeremy Pasquier,Angel Amores,Thomas Desvignes,Peter Batzel,Julian M. Catchen,Aaron M. Berlin,Michael S. Campbell,Daniel Barrell,Daniel Barrell,Kyle J. Martin,John F Mulley,Vydianathan Ravi,Alison P. Lee,Tetsuya Nakamura,Domitille Chalopin,Shaohua Fan,Dustin J. Wcisel,Cristian Cañestro,Jason Sydes,Felix E.G. Beaudry,Yi Sun,Jana Hertel,Michael J. Beam,Mario Fasold,Mikio Ishiyama,Jeremy Johnson,Steffi Kehr,Marcia Lara,John H. Letaw,Gary W. Litman,Ronda T. Litman,Masato Mikami,Tatsuya Ota,Nil Ratan Saha,Louise Williams,Peter F. Stadler,Han Wang,John S. Taylor,Quenton C. Fontenot,Allyse M. Ferrara,Stephen M. J. Searle,Bronwen Aken,Bronwen Aken,Mark Yandell,Igor Schneider,Jeffrey A. Yoder,Jean-Nicolas Volff,Axel Meyer,Chris T. Amemiya,Byrappa Venkatesh,Peter W. H. Holland,Yann Guiguen,Julien Bobe,Neil H. Shubin,Federica Di Palma,Jessica Alföldi,Kerstin Lindblad-Toh,Kerstin Lindblad-Toh,John H. Postlethwait +63 more
TL;DR: In this article, the authors sequenced the genome of spotted gar (Lepisosteus oculatus), whose lineage diverged from teleosts before teleost genome duplication (TGD).
Journal ArticleDOI
Evolution of opsins and phototransduction.
TL;DR: This work discusses the evolution of the counterion, the reduction of agonist binding to the receptor, and the molecular properties that characterize rod opsins apart from cone opsins, and shows how the advances in molecular biology and biophysics have given insights into how evolution works at the molecular level.
Journal ArticleDOI
Gene duplication and spectral diversification of cone visual pigments of zebrafish.
TL;DR: These findings must contribute to the comprehensive understanding of visual capabilities of zebrafish and the evolution of the fish visual system and should become a basis of further studies on expression and developmental regulation of the opsin genes.
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Cone Opsin Genes of African Cichlid Fishes: Tuning Spectral Sensitivity by Differential Gene Expression
TL;DR: Variations in cichlid spectral sensitivity have arisen through evolution of gene regulation, rather than through changes in opsin amino acid sequence.
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The evolution of irradiance detection: melanopsin and the non-visual opsins
TL;DR: The range of vertebrate photoreceptors and their opsin photopigments are discussed, the melanopsin/pRGC system is described in some detail and the molecular evolution and sensory ecology of these non-image-forming photoreceptor systems are considered.
References
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Journal ArticleDOI
The cryb mutation identifies cryptochrome as a circadian photoreceptor in Drosophila
Ralf Stanewsky,Maki Kaneko,Patrick Emery,Bonnie Beretta,Karen Wager-Smith,Steve A. Kay,Michael Rosbash,Michael Rosbash,Jeffrey C. Hall +8 more
TL;DR: Cryb flies are rhythmic in constant darkness, correlating with robust PER and TIM cycling in certain pacemaker neurons, and is an apparent null mutation in a gene encoding Drosophila's version of the blue light receptor cryptochrome.
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Melanopsin: An opsin in melanophores, brain, and eye.
TL;DR: Melanopsin mRNA is expressed in hypothalamic sites thought to contain deep brain photoreceptors and in the iris, a structure known to be directly photosensitive in amphibians, and expression in retinal and nonretinal tissues suggests a role in vision and nonvisual photoreceptive tasks.
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CRY, a Drosophila Clock and Light-Regulated Cryptochrome, Is a Major Contributor to Circadian Rhythm Resetting and Photosensitivity
TL;DR: It is proposed that CRY is a major Drosophila photoreceptor dedicated to the resetting of circadian rhythms, and physiological and genetic data link a specific photorecept molecule to circadian rhythmicity.
Journal ArticleDOI
Glutamic acid-113 serves as the retinylidene Schiff base counterion in bovine rhodopsin
TL;DR: It is concluded that glutamic acid-113 serves as the retinylidene Schiff base counterion in rhodopsin and this opsin-chromophore interaction is an example of a general mechanism of color regulation in the visual pigments.