Mastodawn

The freshwater #alga Trachydiscus minutus survives in extreme low-light environments by utilizing a specialized protein architecture to capture far-red light for photosynthesis, relying entirely on ordinary chlorophyll a.
#Biochemistry #StructuralBiology #Photobiology #Biology #sflorg
https://www.sflorg.com/2026/03/bchm03142601.html

Scientific Frontline

A freshwater alga captures far-red light for photosynthesis by rearranging ordinary chlorophyll

Rhyothemis Oct 31, 2024

Dark Days and Bright Nights Associated with a Dose-Dependent Increase in Mortality
https://youtu.be/UceHiFblPUs?si=z3onF7OPc7_CkGja

journal article:
Brighter nights and darker days predict higher mortality risk: A prospective analysis of personal light exposure in 88,000 individuals
https://www.pnas.org/doi/epub/10.1073/pnas.2405924121

I had recently posted that I wished there were more epidemiological studies that tracked light exposure / time outdoors:
https://zeroes.ca/@Rhyothemis/113216485138966187

#2dayIwatched #LightExposure #photobiology #chronobiology
#medicine #health #photobiomodulation

Dark Days and Bright Nights Associated with a Dose-Dependent Increase in Mortality

Roger Seheult, MD of MedCram examines a study that correlates light exposure timing with mortality. See all Dr. Seheult's videos at: https://www.medcram.com/...

YouTube

Keiran Rowell Jun 4, 2024

https://www.nature.com/articles/s41589-024-01626-0

Computational design and experiment validation of new proteins to hold pairs of chlorophylls close together in interesting orientations to study their light absorbing properties.

#proteindesign #chlorophyll #photobiology

De novo design of proteins housing excitonically coupled chlorophyll special pairs - Nature Chemical Biology

A de novo-designed protein that precisely assembles a chlorophyll dimer has been developed. The design matches the conformation of the native ‘special pair’ of chlorophylls that functions as the primary electron donor in natural photosynthetic reaction centers. In the designed protein, excitonically coupled chlorophylls participate in energy transfer. The proteins were also redesigned to assemble into 24-chlorophyll nanocages.

Nature