SNX3 GI:4507143 sorting nexin 3 isoform a 1 maetvadtrr litkpqnlnd aygppsnfle idvsnpqtvg vgrgrfttye 50 51 irvktnlpif klkestvrrr ysdfewlrse lereskvvvp plpgkaflrq 100 101 lpfrgddgif ddnfieerkq gleqfinkva ghplaqnerc lhmflqdeii 150 151 dksytpskir ha