any of various colorless proteins that in combination with retinal or a related prosthetic group form a visual pigment (as rhodopsin) in a reaction...
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www.merriam-webster.com/dictionary/OPSIN
www.merriam-webster.com/dictionary/OPSIN
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Opsin does not absorb visible light, but when it is bonded with 11-cis-retinal to form rhodopsin, the new molecule has a very broad absorption band in the visible region of the spectrum. The peak of the absorption is around 500 nm, which matches the output of the sun closely.
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www.ch.ic.ac.uk/vchemlib/mim/bristol/retinal/retinal_te...
www.ch.ic.ac.uk/vchemlib/mim/bristol/retinal/retinal_text.htm
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InterPro: IPR001760 Opsin PRINTS PR00238 OPSIN 2601 PROSITE pattern PS00238 OPSIN 2399...
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www.ebi.ac.uk/interpro/DisplayIproEntry?ac=IPR001760
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InterPro: IPR000378 Opsin, red/green sensitive IPR001760 Opsin 189 - 201 IPR001760 Opsin...
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www.ebi.ac.uk/interpro/IEntry?ac=IPR000378
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Help us create one by contributing now. LINKS. Related Articles. Aspects of the topic opsin are discussed in the following places at Britannica.
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www.britannica.com/EBchecked/topic/430292/opsin
www.britannica.com/EBchecked/topic/430292/opsin
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A protein of the retina, especially the protein constituent of rhodopsin, that makes up one of the visual pigments. [Probably back-formation from rhodopsin.
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www.thefreedictionary.com/opsin
www.thefreedictionary.com/opsin
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These differences should result in adaptive selective pressure on the genes involved in visual sensitivity, the opsin genes. This study examines the evidence for differential adaptive molecular evolution in East African cichlid opsin genes due to gross differences in environmental light conditions.
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mbe.oupjournals.org/cgi/lookup?vol=22&fp=1412&view=abst...
mbe.oupjournals.org/cgi/lookup?vol=22&fp=1412&view=abstract
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Next, we review recent key findings in molecular genetics research on ret-inal photopigment opsin genes. Related results from color perception psychophysics and color and cognition research are then described.
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www.klab.caltech.edu/cns186/papers/Jameson01.pdf
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