7.6.2.6 F590G major decrease in red eye color pigments, guanine transport affected 210351 7.6.2.6 G243S major decrease in red and brown eye color pigments, guanine and tryptophan transport affected 210351 7.6.2.6 G589E major decrease in red eye color pigments, guanine transport affected 210351 7.6.2.6 H298N major decrease in red and brown eye color pigments, guanine and tryptophan transport affected 210351