2.4.1.241: digalactosyldiacylglycerol synthase
This is an abbreviated version!
For detailed information about digalactosyldiacylglycerol synthase, go to the full flat file.
Word Map on EC 2.4.1.241
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2.4.1.241
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galactolipids
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monogalactosyldiacylglycerol
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thylakoids
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cyanobacteria
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photosystem
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phosphate-limiting
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grana
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prothylakoids
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galactolipid:galactolipid
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cyanidioschyzon
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sulfoquinovosyldiacylglycerol
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protochlorophyllide
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etioplasts
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prolamellar
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oligogalactolipids
- 2.4.1.241
- galactolipids
- monogalactosyldiacylglycerol
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thylakoids
- cyanobacteria
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photosystem
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phosphate-limiting
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grana
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prothylakoids
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galactolipid:galactolipid
- cyanidioschyzon
- sulfoquinovosyldiacylglycerol
- protochlorophyllide
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etioplasts
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prolamellar
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oligogalactolipids
Reaction
Synonyms
7942dgdA, DGD synthase, DGD1, DGD2, dgdA, DGDG synthase, DGDG synthase (ambiguous), digalactosyldiacylglycerol synthase 1, digalactosyldiacylglycerol synthase 1, chloroplast, digalactosyldiacylglycerol synthase 2, digalactosyldiacylglycerol synthase type 1, digalactosyldiacylglycerol synthase type 2, MtDGD1, UDP-galactose-dependent DGDG synthase, UDP-galactose-dependent digalactosyldiacylglycerol synthase, UDP-galactose:MGDG galactosyltransferase
ECTree
2.4.1.241 digalactosyldiacylglycerol synthaseAdvanced search results
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results (Natural Substrates Products
Natural Substrates Products on EC 2.4.1.241 - digalactosyldiacylglycerol synthase
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NATURAL SUBSTRATE 
NATURAL PRODUCT
REACTION DIAGRAM
ORGANISM
UNIPROT
COMMENTARY
(Substrate)
(Substrate)
LITERATURE
(Substrate)
(Substrate)
COMMENTARY
(Product)
(Product)
LITERATURE
(Product)
(Product)
REVERSIBILITY
r=reversible
ir=irreversible
?=not specified
r=reversible
ir=irreversible
?=not specified
UDP-alpha-D-galactose + 1,2-diacyl-3-O-(beta-D-galactosyl)-sn-glycerol
UDP + 1,2-diacyl-3-O-[alpha-D-galactosyl-(1->6)-beta-D-galactosyl]-sn-glycerol
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?
UDP-galactose + monogalactosyldiacylglycerol
UDP + digalactosyldiacylglycerol
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DGD1 seems to act preferentially on monogalactosyldiacylglycerol molecular species with 18-carbon fatty acids in the two positions of monogalactosyldiacylglycerol in vivo
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?
UDP-galactose + monogalactosyldiacylglycerol
UDP + digalactosyldiacylglycerol
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DGD2 seems to act preferentially on monogalactosyldiacylglycerol molecular species with 16-carbon fatty acids in the sn-1 position and on 18-carbon fatty acid in the sn-2 position in vivo
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?
UDP-galactose + monogalactosyldiacylglycerol
UDP + digalactosyldiacylglycerol
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additional information
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DGD2 mRNA expression in leaves is very low but is strongly induced during growth under phosphate-limiting conditions
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additional information
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disruption of the two digalactosyldiacylglycerol synthase genes DGD1 and DGD2 in Arabidopsis reveals the existence of an additional enzyme of galactolipid synthesis
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additional information
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a null-mutant of Arabidopsis, which lacks the DGDG synthase (DGD1) resulting in a 90% reduction in the amount of DGDG under normal growth conditions, accumulates digalactosyldiacylglycerol after phosphate deprivation up to 60% of the amount present in the wild-type. Extraplastidic biosynthesis of digalactosyldiacylglycerol induced by phosphate deprivation is a biochemical mechanism for plants to conserve phosphate
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