What functional group of the protein opsin reacts with retinal to form rhodopsin, a light-sensitive pigment?
A) carboxylic acid
B) amide
C) 1° amine
D) alcohol

Question

Quizplus · Accepted Answer

The functional group of the protein opsin that reacts with retinal to form rhodopsin is the 1° amine group. This reaction involves the formation of a Schiff base linkage between the aldehyde group of retinal and the 1° amine group of a lysine residue in opsin.

What Functional Group of the Protein Opsin Reacts with Retinal