the deficiency in light-dependent opsin phosphorylation in affected setters was not due to a deficiency in opsin kinase , since soluble proteins from affected or normal outer segments catalyzed equally well opsin phosphorylation in partially kinase-depleted outer segment membranes from normal , while both kinase preparations failed to promote light-dependent opsin phosphorylation in those from affected setters .
C0031727
kinase
C0031715
phosphorylation