Protein
Digeranylgeranylglyceryl phosphate synthase
Organism
Saccharolobus solfataricus (strain ATCC 35092 / DSM 1617 / JCM 11322 / P2)
Function
Prenyltransferase that catalyzes the transfer of the geranylgeranyl moiety of geranylgeranyl diphosphate (GGPP) to the C2 hydroxyl of (S)-3-O-geranylgeranylglyceryl phosphate (GGGP). This reaction is the second ether-bond-formation step in the biosynthesis of archaeal membrane lipids. Cannot use other prenyl donors, i.e. farnesyl diphosphate (FPP) and phytyl diphosphate. Moreover, 4-hydroxybenzoate, 1,4-dihydroxy 2-naphthoate, homogentisate, and alpha-glycerophosphate do not function as prenyl acceptor substrates.
Similarity
Belongs to the UbiA prenyltransferase family. DGGGP synthase subfamily.
Sequence
MSLKSYMQLVRIHNVIGAALGAIMGFLVSSQWYLELKGILLSALVVGLIAAGGYVINDVYDVEIDKINKPYRPIPSGKISVNKAKALSIALFIIGIALSILLNIYALVIALVTAIGLIYYAKDLKKTGFYGNLLVATTTALSIFYGGLAFFSDNWLLRIIIPTLYAFFLTLIREIVKGIEDYNGDSLNNVKTLATTLGINKSWRIAKILLVLLLIISPLPFFIGFNLIYLILLILVFIPFTILSIIQKETIEGASKARTYLKISAISGIIAFLLGSLPFFKG