7.6.2.6	F590G	major decrease in red eye color pigments, guanine transport affected	
7.6.2.6	G243S	major decrease in red and brown eye color pigments, guanine and tryptophan transport affected	
7.6.2.6	G589E	major decrease in red eye color pigments, guanine transport affected	
7.6.2.6	H298N	major decrease in red and brown eye color pigments, guanine and tryptophan transport affected