SNX20 GI:23503255 sorting nexin 20 isoform 2 1 maspehpgsp gcmgpitqct artqqeapat gpdlphpgpd ghldthsgls 50 51 snssmttrel qqywqnqkcr wkhvkllfei asarieerkv skfvmgksrp 100 101 gemtypgsrg etgtapepdp rcprqsdml