#opsins — Public Fediverse posts
Live and recent posts from across the Fediverse tagged #opsins, aggregated by home.social.
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Kłodawska et al. examine visual opsin genes sequences and expression in Bermin crater lake cichlids, recovering little coding sequence divergence but high variation in expression profile, suggesting plasticity at the onset of sensory evolution.
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De Vivo et al. explored the diversity and evolution of opsins using meta-omic data from the Tara Oceans and Tara Polar Circle expeditions, identifying opsins across the different metazoan groups.
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Lagman, Bergqvist & Kuraku analysed opsin gene evolution in jawless vertebrates, confirming tandem duplications of visual opsins before the vertebrate radiation.
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McDowell et al. find that melanopsin spectral sensitivity is constrained across mammalian species via molecular mechanisms that are substantially distinct from those of other opsins.
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Animal vision relies on #opsins, which are proteins that detect light using a small molecule called retinal. Retinal, however, naturally absorbs ultraviolet #UV light only, meaning it sees shorter light than the visible light that we see. To extend its sensitivity into the visible range, retinal binds to the opsin to form a light-sensitive pigment through a special chemical bond called a Schiff base This bond carries a positive charge that normally requires a nearby negatively charged amino acid
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Policarpo et al. analyse 535 genomes to study opsin evolution across ray-finned fishes. Visual opsins are more prone to duplications and losses than nonvisual opsins; fish that rely on electroreception show a reduction in both opsin types.
🔗 doi.org/10.1093/gbe/evaf129
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Our recent article on non-visual opsins in lizards - which made the May cover - is the focus of a new Highlight.
"Highlight: More Than Meets the Eye—Nonvisual Opsins Are Crucial for Light-Sensing in Vertebrates"
🔗 doi.org/10.1093/gbe/evaf075
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The tuatara and many lizards possess a parietal eye, where non-visual opsins are expressed. Romero & @fsjsouza.bsky.social compared 60+ genomes to study the evolution of non-visual opsins, suggesting a functional role associated with the parietal eye.
🔗 doi.org/10.1093/gbe/evaf058
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The May cover of Genome Biology and Evolution features the work of Romero & de Souza, who used comparative genomics to study the evolution of non-visual opsin genes in lizards and the tuatara.
🔗 doi.org/10.1093/gbe/evaf058
🖌️ Eugenia Amado
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Deep-sea #shrimp have #evolved enhanced #vision for the #bioluminescent world, study finds.
https://phys.org/news/2025-02-deep-sea-shrimp-evolved-vision.html
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Deep-sea #shrimp have #evolved enhanced #vision for the #bioluminescent world, study finds.
https://phys.org/news/2025-02-deep-sea-shrimp-evolved-vision.html
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Deep-sea #shrimp have #evolved enhanced #vision for the #bioluminescent world, study finds.
https://phys.org/news/2025-02-deep-sea-shrimp-evolved-vision.html
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Deep-sea #shrimp have #evolved enhanced #vision for the #bioluminescent world, study finds.
https://phys.org/news/2025-02-deep-sea-shrimp-evolved-vision.html
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Deep-sea #shrimp have #evolved enhanced #vision for the #bioluminescent world, study finds.
https://phys.org/news/2025-02-deep-sea-shrimp-evolved-vision.html
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The life aquatic: a game changer for #frog vision, but little difference between night and day https://www.yorku.ca/science/2024/04/04/the-life-aquatic-a-game-changer-for-frog-vision-but-little-difference-between-night-and-day-york-led-study-finds/
Diversity and #Evolution of Frog Visual #Opsins: Spectral Tuning and Adaptation to Distinct Light Environments https://academic.oup.com/mbe/article/41/4/msae049/7639264
"Ancestral legacy and continued present-day advantages may explain why diurnal frog species kept genes adapted to night vision"
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Interested in understanding the #evolution of multifunctionality in #opsins ?
New 3yr postdoc position available in the Feuda lab at the Neurogenetics group in University of Leicester. This project is funded by the collaborative Human Frontier Science Program by @robertofeuda
Please boost and contact Roberto directly via [email protected] for informal enquiries
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Excited to share our recent preprint about opsin gene expression plasticity, vision, female colour polymorphism and male mate search in my favourite insect species: the Common Bluetail Damselfly (Ischnura elegans).
A collaboration between #SvenssonLab and Lund Vision Group, led by our incoming postdoc Natalie Roberts and with Dr. Marjorie Lienard #Odonata #damselflies #opsins #insects #evolution