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opsin

[ op-sin ]

noun

, Biochemistry.
  1. any of several compounds that form the protein component of the light-sensitive retina pigment, rhodopsin.


opsin

/ ˈɒpsɪn /

noun

  1. the protein that together with retinene makes up the purple visual pigment rhodopsin
“Collins English Dictionary — Complete & Unabridged” 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012


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Word History and Origins

Origin of opsin1

First recorded in 1950–55; probably back formation from rhodopsin
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Word History and Origins

Origin of opsin1

C20: back formation from rhodopsin
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Example Sentences

To confirm that, Liu’s team shut off the opsin genes and TRPL in infected caterpillars.

Detected mostly in the eyes, two genes for opsins, the light-sensitive proteins that are fundamental for vision, were more active after an infection with the virus, and so was another gene associated with vision called TRPL.

Using viruses, scientists can add a gene for opsins, a special family of proteins from algae, into living neurons.

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opsimath-opsis