Talk:Photopsin

	This redirect is within the scope of WikiProject Molecular Biology, a collaborative effort to improve the coverage of Molecular Biology on Wikipedia. If you would like to participate, please visit the project page, where you can join the discussion and see a list of open tasks.Molecular BiologyWikipedia:WikiProject Molecular BiologyTemplate:WikiProject Molecular BiologyMolecular Biology articles
Low	This redirect has been rated as Low-importance on the importance scale.
	This redirect is supported by the Molecular and Cell Biology task force (assessed as Mid-importance).

Biophysics (inactive)

This article is within the scope of WikiProject Biophysics, a project which is currently considered to be inactive.BiophysicsWikipedia:WikiProject BiophysicsTemplate:WikiProject BiophysicsBiophysics articles

Untitled[edit]

It seems that the Rhodopsin article has much of the same information and is more complete.

Wavelength or frequency?[edit]

This article, like all literature on the subject, treats the -opsins in terms of wavelength. But is it wavelength they are sensitive to, or frequency? The law of refraction states that EM frequency remains the same, but wavelength does not, across a transition medium. The frequency of a particular light emitted in vacuum, which crosses into air, and then vitreous humor, is constant. The wavelength is not. --76.217.90.99 01:15, 4 May 2007 (UTC)[reply]

In birds and other animals[edit]

The photopsins that exist in humans are not the only ones that exist. Could anyone name the UV-sensitive photopsin that gives birds their tetrachromacy? Are there any infrared-sensitive photopsins? If so, what animals use them? What genes are responsible for producing various photopsins, and what are the precursor chemicals? 71.202.31.63 (talk) 04:02, 1 September 2011 (UTC)[reply]

Molecular Structure[edit]

Why no mention of the molecular structure?75.129.91.157 (talk) 08:12, 7 December 2013 (UTC)[reply]

Why does "porphyropsin" redirect here?[edit]

Is it a synonym? Equinox ◑ 23:11, 21 May 2017 (UTC)[reply]

The redirect in non-sense, porphyropsin is rod-opsin with covalently bound 11-cis-retinal-2 while rhodopsin is rod-opsin with covalently bound 11-cis-retinal-1. Two different things, if it all it should redirect to rhodopsin. -- Martin Gühmann (talk) 01:38, 3 December 2021 (UTC)[reply]