Phototransduction

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

Synapse

ROS Disk

Cilium

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