OCA2 melanosomal transmembrane protein MHLEGRDGRR YPGAPAVELL QTSVPSGLAE LVAGKRRLPR GAGGADPSHS CPRGAAGQSS WAPAGQEFAS FLTKGRSHSS LPQMSSSRSK DSCFTENTPL LRNSLQEKGS RCIPVYHPEF ITAEESWEDS SADWERRYLL SREVSGLSAS ASSEKGDLLD SPHIRLRLSK LRRCVQWLKV MGLFAFVVLC SVTHNWTVYL NPRRSEHSVM SRTFEVLT