Geranylgeranylglyceryl phosphate synthase GGGPS_PYRHO (S)-3-O-geranylgeranylglyceryl phosphate synthase MGELRIGKVEKYIHEKLEKKKLHFVLIDPDDTSPEVAGKLARVCEELGVDAIMVGGSTGAEGEVLDNVVRSIKDNSSLPVILFPGSHGGISRYADAIFFMSLLNSRNPFFITGAQALGAFTVKKFGIEPIPMAYIVVEPGETVGWVGDARPIPRHKPKLAAAYALAGQYLGMRLVYLEAGSGAPEPVPEEMVRVVKSVIDVPLIVGGGIKSGEQAKKLIKSGADIIVTGTAIEKAKSLEEARKRLEAIRNGVFV PH1124 254 Phosphoglycerol geranylgeranyltransferase Prenyltransferase that catalyzes the transfer of the geranylgeranyl moiety of geranylgeranyl diphosphate (GGPP) to the C3 hydroxyl of sn-glycerol-1-phosphate (G1P). This reaction is the first ether-bond-formation step in the biosynthesis of archaeal membrane lipids (By similarity). PH1124