>gi|4507143 sorting nexin 3 isoform a [Homo sapiens] MAETVADTRRLITKPQNLNDAYGPPSNFLEIDVSNPQTVGVGRGRFTTYE IRVKTNLPIFKLKESTVRRRYSDFEWLRSELERESKVVVPPLPGKAFLRQ LPFRGDDGIFDDNFIEERKQGLEQFINKVAGHPLAQNERCLHMFLQDEII DKSYTPSKIRHA