Phosphatidylinositol glycan anchor biosynthesis class B MRRPLSKCGM EPGGGDASLT LHGLQNRSHG KIKLRKRKST LYFNTQEKSA RRRGVFLPVV LLVHMVLLYQ NPYKHHGNCS HYNCSFLLSF GRFKVYEQCQ ILIPGGTCLH NSSHSCHSVD TFALQTFLSR TKKA