3.2.1 The disk membrane
Photoactivation of rhodopsin, which is the only light-sensitive reaction in rods, and interaction with Gt are the first two steps in phototransduction. This term denotes a sequence of protein-protein interactions and biochemical reactions, which are initiated by photoactivation of rhodopsin. All reactions are localized on the disk membranes of the rod outer segment (ROS) (Figure 1). The human
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