obsolete (S)-2,3-di-O-geranylgeranylglyceryl phosphate synthase activity https://github.com/geneontology/go-ontology/issues/26829 https://github.com/geneontology/go-ontology/issues/26832 true GO:0043888 DGGGP synthase activity molecular_function DGGGPS 2,3-dGGGPS This function is involved in archaeal lipid synthesis. The reason for obsoletion is that this term is equivalent to GO:0047295 geranylgeranylglycerol-phosphate geranylgeranyltransferase activity. UbiA OBSOLETE. 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. geranylgeranylglycerol-phosphate geranylgeranyltransferase activity