EMBL-EBI_Structures_of_Christmas_2016_OPSIN
![3D printout: the molecular structure of opsin](https://www.embl.org/news/wp-content/uploads/2016/12/EMBL-EBI_Structures_of_Christmas_2016_OPSIN.jpg)
A protein that lets us see light: Opsin. In humans, opsin is in an internal cell membrane, arranged almost like a stack of pancakes with these proteins poised for photons to hit them. When a photon does hit, the helices rotate relative to each other, changing the shape of the “inside” of the…
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