The Enzyme Database

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Accepted name: monoglucosyldiacylglycerol synthase
Reaction: UDP-α-D-glucose + a 1,2-diacyl-sn-glycerol = UDP + a 1,2-diacyl-3-O-(β-D-glucopyranosyl)-sn-glycerol
Glossary: a 1,2-diacyl-3-O-(β-D-glucopyranosyl)-sn-glycerol = a β-monoglucosyldiacylglycerol = a GlcDG
Other name(s): mgdA (gene name)
Systematic name: UDP-α-D-glucose:1,2-diacyl-sn-glycerol 3-β-D-glucosyltransferase
Comments: The enzymes from cyanobacteria are involved in the biosynthesis of galactolipids found in their photosynthetic membranes. The enzyme belongs to the GT2 family of configuration-inverting glycosyltranferases [2]. cf. EC, 1,2-diacylglycerol 3-α-glucosyltransferase.
Links to other databases: BRENDA, EXPASY, KEGG, MetaCyc
1.  Sato, N. and Murata, N. Lipid biosynthesis in the blue-green-alga (cyanobacterium), Anabaena variabilis. 3. UDP-glucose-diacylglycerol glucosyltransferase activity in vitro. Plant Cell Physiol. 23 (1982) 1115–1120.
2.  Awai, K., Kakimoto, T., Awai, C., Kaneko, T., Nakamura, Y., Takamiya, K., Wada, H. and Ohta, H. Comparative genomic analysis revealed a gene for monoglucosyldiacylglycerol synthase, an enzyme for photosynthetic membrane lipid synthesis in cyanobacteria. Plant Physiol. 141 (2006) 1120–1127. [DOI] [PMID: 16714404]
3.  Yuzawa, Y., Shimojima, M., Sato, R., Mizusawa, N., Ikeda, K., Suzuki, M., Iwai, M., Hori, K., Wada, H., Masuda, S. and Ohta, H. Cyanobacterial monogalactosyldiacylglycerol-synthesis pathway is involved in normal unsaturation of galactolipids and low-temperature adaptation of Synechocystis sp. PCC 6803. Biochim. Biophys. Acta 1841 (2014) 475–483. [DOI] [PMID: 24370445]
[EC created 2015]

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