obsolete GPI anchor biosynthetic process via N-threonyl-glycosylphosphatidylinositolethanolamine (obsolete GO:0050493)
OBSOLETE. The chemical reactions and pathways resulting in the formation of a C-terminal peptidyl-threonyl ethanolamide-linked glycosylphosphatidylinositol (GPI) anchor following hydrolysis of a threonyl-peptide bond in the carboxy-terminal region of a membrane-associated protein.