The Enzyme Database

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Accepted name: archaetidylserine synthase
Reaction: (1) CDP-2,3-bis-(O-geranylgeranyl)-sn-glycerol + L-serine = CMP + 2,3-bis-(O-geranylgeranyl)-sn-glycero-1-phospho-L-serine
(2) CDP-2,3-bis-(O-phytanyl)-sn-glycerol + L-serine = CMP + 2,3-bis-(O-phytanyl)-sn-glycero-1-phospho-L-serine
For diagram of archaetidylserine biosynthesis, click here
Glossary: CDP-2,3-bis-(O-geranylgeranyl)-sn-glycerol = CDP-unsaturated archaeol
2,3-bis-(O-geranylgeranyl)-sn-glycero-1-phospho-L-serine = unsaturated archaetidylserine
CDP-2,3-bis-(O-phytanyl)-sn-glycerol = CDP archaeol
2,3-bis-(O-phytanyl)-sn-glycero-1-phospho-L-serine = archaetidylserine
Systematic name: CDP-2,3-bis-(O-geranylgeranyl)-sn-glycerol:L-serine 2,3-bis-(O-geranylgeranyl)-sn-glycerol phosphotransferase
Comments: Requires Mn2+. Isolated from the archaeon Methanothermobacter thermautotrophicus.
Links to other databases: BRENDA, EXPASY, KEGG, MetaCyc
1.  Morii, H. and Koga, Y. CDP-2,3-di-O-geranylgeranyl-sn-glycerol:L-serine O-archaetidyltransferase (archaetidylserine synthase) in the methanogenic archaeon Methanothermobacter thermautotrophicus. J. Bacteriol. 185 (2003) 1181–1189. [DOI] [PMID: 12562787]
[EC created 2013, modified 2013]
Accepted name: archaetidylinositol phosphate synthase
Reaction: CDP-2,3-bis-(O-phytanyl)-sn-glycerol + 1L-myo-inositol 1-phosphate = CMP + 1-archaetidyl-1D-myo-inositol 3-phosphate
Glossary: 1L-myo-inositol 1-phosphate = 1D-myo-inositol 3-phosphate
CDP-2,3-bis-(O-phytanyl)-sn-glycerol = CDP-2,3-di-(O-phytanyl)-sn-glycerol = CDP-archaeol
1-archaetidyl-1D-myo-inositol 3-phosphate = archaetidyl-myo-inositol 1-phosphate
Other name(s): AIP synthase
Systematic name: CDP-2,3-bis-(O-phytanyl)-sn-glycerol:1L-myo-inositol 1-phosphate 1-sn-archaetidyltransferase
Comments: Requires Mg2+ or Mn2+ for activity. The enzyme is involved in biosynthesis of archaetidyl-myo-inositol, a compound essential for glycolipid biosynthesis in archaea.
Links to other databases: BRENDA, EXPASY, KEGG, MetaCyc
1.  Morii, H., Kiyonari, S., Ishino, Y. and Koga, Y. A novel biosynthetic pathway of archaetidyl-myo-inositol via archaetidyl-myo-inositol phosphate from CDP-archaeol and D-glucose 6-phosphate in methanoarchaeon Methanothermobacter thermautotrophicus cells. J. Biol. Chem. 284 (2009) 30766–30774. [DOI] [PMID: 19740749]
[EC created 2013]

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