label: geranylgeranylglycerol-phosphate geranylgeranyltransferase activity
label_lc: geranylgeranylglycerol-phosphate geranylgeranyltransferase activity
description: "Catalysis of the reaction: (2E,6E,10E)-geranylgeranyl diphosphate + sn-3-O-(geranylgeranyl)glycerol 1-phosphate = 2,3-bis-O-(geranylgeranyl)-sn-glycerol 1-phosphate + diphosphate."