Type I Rhodopsins

question 21

Multiple Choice

Type I rhodopsins:

• A) are only found in prokaryotes.
• B) are converted from 11-cis to all-trans retinal isomers by light.
• C) can be used experimentally either to photo-activate or -inactivate mammalian neurons.
• D) are closely related to type II rhodopsins in sequence and structure.
• E) All of the above

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