caspase complex GPI-anchor transamidase complex An enzyme complex which in humans and yeast consists of at least five proteins; for example, the complex contains GAA1, GPI8, PIG-S, PIG-U, and PIG-T in human, and Gaa1p, Gab1p, Gpi8p, Gpi16p, and Gpi17p in yeast. Catalyzes the posttranslational attachment of the carboxy-terminus of a precursor protein to a GPI-anchor. GO:0042765 Note that this term should not be confused with 'glycosylphosphatidylinositol-N-acetylglucosaminyltransferase (GPI-GnT) complex ; GO:0000506', which represents a distinct complex with a different catalytic activity. protein membrane protein complex endoplasmic reticulum protein-containing complex transferase complex