obsolete GPI anchor biosynthetic process via N-alanyl-glycosylphosphatidylinositolethanolamine (obsolete GO:0018270)
OBSOLETE. The chemical reactions and pathways resulting in the formation of a C-terminal peptidyl-alanine ethanolamide-linked glycosylphosphatidylinositol (GPI) anchor following hydrolysis of an alanyl-peptide bond in the carboxy-terminal region of a membrane-associated protein.