name: GPI anchor metabolic process
def: "The chemical reactions and pathways involving glycosylphosphatidylinositol anchors, molecular mechanisms for attaching membrane proteins to the lipid bilayer of cell membranes. Structurally they consist of a molecule of phosphatidylinositol to which is linked, via the C-6 hydroxyl of the inositol, a carbohydrate chain. This chain is in turn linked to the protein through an ethanolamine phosphate group, the amino group of which is in amide linkage with the C-terminal carboxyl of the protein chain, the phosphate group being esterified to the C-6 hydroxyl of the terminal mannose of the core carbohydrate chain." [ISBN:0198506732]
synonym: "glycosylphosphatidylinositol metabolic process" EXACT 
synonym: "glycosylphosphatidylinositol metabolism" EXACT 
synonym: "GPI anchor metabolism" EXACT 
synonym: "GPI/GSI anchor metabolic process" BROAD 
synonym: "GPI/GSI anchor metabolism" BROAD 
is_a: GO:0006664 ! glycolipid metabolic process
is_a: GO:0046488 ! phosphatidylinositol metabolic process
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