This cytosolic enzyme catalyses the first pathway-specific step in the biosynthesis of the core membrane diether lipids in archaebacteria . Requires Mg2+ for maximal activity . It catalyses the alkylation of the primary hydroxy group in sn-glycerol 1-phosphate by geranylgeranyl diphosphate (GGPP) in a prenyltransfer reaction where a hydroxy group is the nucleophile in the acceptor substrate . The other enzymes involved in the biosynthesis of polar lipids in Archaea are EC 18.104.22.1681 (sn-glycerol-1-phosphate dehydrogenase), EC 22.214.171.124 (geranylgeranylglycerol-phosphate geranylgeranyltransferase) and EC 126.96.36.199 (CDP-archaeol synthase), which lead to the formation of CDP-unsaturated archaeol. The final step in the pathway involves the addition of L-serine, with concomitant removal of CMP, leading to the production of unsaturated archaetidylserine .
diversity of thaumarchaeotal GGGP synthases in the marine water column, phylogenetic analysis and tree and correlation to the classification of shallow and deep water clusters, overview. Differences in isoprenoid glycerol dialkyl glycerol tetraethers distributions from subsurface to deep waters that may be explained by differences in the GGGP synthase, suggesting a genetic control on isoprenoid glycerol dialkyl glycerol tetraethers distribution. Diversity of archaeal GGGP synthases, overview
the key enzyme catalyses the formation of an ether bond between isoprenyl diphosphate and glycerol-1-phosphate to form 3-(O-geranylgeranyl)-sn-glycerol 1-phosphate, and is the first committed step towards ether membrane lipid synthesis