Retinal S Antigen

Retinal S-Antigen

S Antigen, Retinal

S-Antigen, Retinal

A 48-Kd protein of the outer segment of the retinal rods and a component of the phototransduction cascade. Arrestin quenches G-protein activation by binding to phosphorylated photolyzed rhodopsin. Arrestin causes experimental autoimmune uveitis when injected into laboratory animals.