Reaction: sn-glycerol 1-phosphate + NAD(P)+ = glycerone phosphate + NAD(P)H + H+
For diagram of reaction click here.
Glossary: glycerone phosphate = dihydroxyacetone phosphate = 3-hydroxy-2-oxopropyl phosphate
Other name(s): glycerol-1-phosphate dehydrogenase [NAD(P)+]; sn-glycerol-1-phosphate:NAD+ oxidoreductase; G-1-P dehydrogenase; Gro1PDH
Systematic name: sn-glycerol-1-phosphate:NAD(P)+ 2-oxidoreductase
Comments: This Zn2+-dependent metalloenzyme is responsible for the formation of archaea-specific sn-glycerol-1-phosphate, the first step in the biosynthesis of polar lipids in archaea. It is the enantiomer of sn-glycerol 3-phosphate, the form of glycerophosphate found in bacteria and eukaryotes. The other enzymes involved in the biosynthesis of polar lipids in archaea are EC 188.8.131.52 (phosphoglycerol geranylgeranyltransferase) and EC 184.108.40.206 (geranylgeranylglycerol-phosphate geranylgeranyltransferase), which together alkylate the hydroxy groups of glycerol 1-phosphate to give unsaturated archaetidic acid, which is acted upon by EC 220.127.116.11 (CDP-archaeol synthase) to form 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 . Activity of the enzyme is stimulated by K+ .
Links to other databases: BRENDA, EXPASY, KEGG, Metacyc, CAS registry number: 204594-18-3
1. Nishihara, M. and Koga, Y. sn-Glycerol-1-phosphate dehydrogenase in Methanobacterium thermoautotrophicum: key enzyme in biosynthesis of the enantiomeric glycerophosphate backbone of ether phospholipids of archaebacteria. J. Biochem. 117 (1995) 933-935. [PMID: 8586635]
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