The relative specificity of opsin kinase towards ATP and GTP and the lack of effect of cyclic nucleotides on the activity of the enzyme.
D000255:Adenosine Triphosphate / Q000378:metabolism*; D000818:Animals; D002417:Cattle; D000242:Cyclic AMP / Q000494:pharmacology; D006152:Cyclic GMP / Q000494:pharmacology; D006160:Guanosine Triphosphate / Q000378:metabolism*; D008027:Light; D010786:Photoreceptor Cells / Q000201:enzymology; D011494:Protein Kinases / Q000378:metabolism*; D012243:Rhodopsin / Q000032:analysis
D006160:Guanosine Triphosphate; D000255:Adenosine Triphosphate; D012243:Rhodopsin; D000242:Cyclic AMP; D011494:Protein Kinases; D006152:Cyclic GMP