. "Catalysis of the reaction: sn-3-O-(geranylgeranyl)glycerol 1-phosphate + all-trans-geranylgeranyl diphosphate = 2,3-di-O-(geranylgeranyl)glycerol 1-phosphate + diphosphate." . . "geranylgeranylglycerol-phosphate geranylgeranyltransferase activity" . "geranylgeranyl diphosphate:sn-3-O-(geranylgeranyl)glycerol 1-phosphate geranylgeranyltransferase activity" . "geranylgeranyloxyglycerol phosphate geranylgeranyltransferase activity" . "geranylgeranyltransferase II" . . .