#rhodopsin — Public Fediverse posts

New post! On the #chemistry of #purple, my favourite colour 💜

https://keiran-rowell.github.io/dyes/2025-11-05-aniline-and-the-german-chemical-industry/

This tale winds its way past sea snails and togas 🏛️, coal tar and dream snakes 🐍, industrial conglomerates and chemical theory ⌬ ⟷ ⏣, to flow back in recirculation to fundamental light-sensitive cells themselves 👁️💡🦠

Spend time with this hue right at the edge of our perception 🎨

#benzene #Kekulé #dyes #BASF #organic #porphyrin #GravitysRainbow #Pynchon #Perkin #rhodopsin #HistoryofScience #orbitals #art

New post! On the #chemistry of #purple, my favourite colour 💜

https://keiran-rowell.github.io/dyes/2025-11-05-aniline-and-the-german-chemical-industry/

This tale winds its way past sea snails and togas 🏛️, coal tar and dream snakes 🐍, industrial conglomerates and chemical theory ⌬ ⟷ ⏣, to flow back in recirculation to fundamental light-sensitive cells themselves 👁️💡🦠

Spend time with this hue right at the edge of our perception 🎨

#benzene #Kekulé #dyes #BASF #organic #porphyrin #GravitysRainbow #Pynchon #Perkin #rhodopsin #HistoryofScience #orbitals #art

https://youtube.com/watch?v=NjrFe7JHY1o&si=AnMb1ScqOXwNj5ag

*Beautiful* animation and explanation of how our eyes turn light into electrical brain signals. 👁️🧠

A single photon causes a twist in one rhodopsin molecule, setting up a signal cascade that closes pores between membrane stacks filled with charged atoms.

Kind of like the cells in a battery 🔋 this causes a 1 millivolt drop, enough to send off electrical signals to your neurons conveying that you detected a photon! 〰️

#vision #phototransduction #rhodopsin #animation

Retinal #photoreceptor cells are maintained through a complex #ProteinTrafficking network. @RobichauxLab use quant super-res microscopy to reveal trafficking of the visual pigment #rhodopsin in the inner segment region of rod photoreceptors #PLOSBiology https://plos.io/3RPJPVW

Retinal #photoreceptor cells are maintained through a complex #ProteinTrafficking network. @RobichauxLab use quant super-res microscopy to reveal trafficking of the visual pigment #rhodopsin in the inner segment region of rod photoreceptors #PLOSBiology https://plos.io/3RPJPVW

Some #microalgae smartly switch energy systems to support growth under nutrient limitation https://microbiologycommunity.nature.com/posts/some-microalgae-smartly-switch-energy-systems-to-support-growth-under-nutrient-limitation

#Plastid-localized #xanthorhodopsin increases #diatom biomass and ecosystem productivity in iron-limited surface oceans https://www.nature.com/articles/s41564-023-01498-5

"marine #diatoms, a globally important group of #algae can switch between #photosynthesis and a light-driven #rhodopsin proton pump to support growth in iron-deprived waters"

#protists #microbes #metabolism #plankton

Some #microalgae smartly switch energy systems to support growth under nutrient limitation https://microbiologycommunity.nature.com/posts/some-microalgae-smartly-switch-energy-systems-to-support-growth-under-nutrient-limitation

#Plastid-localized #xanthorhodopsin increases #diatom biomass and ecosystem productivity in iron-limited surface oceans https://www.nature.com/articles/s41564-023-01498-5

"marine #diatoms, a globally important group of #algae can switch between #photosynthesis and a light-driven #rhodopsin proton pump to support growth in iron-deprived waters"

#protists #microbes #metabolism #plankton

Investigating both the #genetic information and structure of the #photoreceptor #rhodopsin, responsible for detecting dim light, of #whale #sharks to investigate how they can see in the dim light at extreme depths.
#MarineBiology #sflorg
https://www.sflorg.com/2023/03/mb03292301.html

Investigating both the #genetic information and structure of the #photoreceptor #rhodopsin, responsible for detecting dim light, of #whale #sharks to investigate how they can see in the dim light at extreme depths.
#MarineBiology #sflorg
https://www.sflorg.com/2023/03/mb03292301.html