2.4.1.184: galactolipid galactosyltransferase
This is an abbreviated version!
For detailed information about galactolipid galactosyltransferase, go to the full flat file.
Word Map on EC 2.4.1.184
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2.4.1.184
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chloroplast
-
galactolipids
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digalactosyldiacylglycerol
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monogalactosyldiacylglycerols
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oleracea
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spinacia
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oligogalactolipids
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1,2-diacylglycerol
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phosphatidylcholine
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phosphatidic
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galactosylation
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thermolysin
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udp-galactose
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udp-gal
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carotenoid
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galactose-labeled
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glycerolipids
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fumigation
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triacylglycerols
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plastids
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ozone
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pisum
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thioesterase
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acyl-coa
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thermolysin-treated
-
sativum
- 2.4.1.184
- chloroplast
- galactolipids
- digalactosyldiacylglycerol
- monogalactosyldiacylglycerols
- oleracea
-
spinacia
-
oligogalactolipids
- 1,2-diacylglycerol
- phosphatidylcholine
-
phosphatidic
-
galactosylation
- thermolysin
- udp-galactose
- udp-gal
-
carotenoid
-
galactose-labeled
- glycerolipids
-
fumigation
- triacylglycerols
-
plastids
- ozone
-
pisum
-
thioesterase
- acyl-coa
-
thermolysin-treated
- sativum
Reaction
2 a 1,2-diacyl-3-O-(beta-D-galactosyl)-sn-glycerol = +
Synonyms
beta-GalT, DGD, galactolipid:galactolipid galactosyltransferase, galactosyltransferase, galactolipid-galactolipid, GGGT, interlipid galactosyltransferase, mono-beta-D-galactosyldiacylglycerol:mono-beta-D-galactosyldiacylglycerol beta-D-galactosyltransferase, tRNA (guanosine-2'-O-)-methyltransferase
ECTree
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Systematic Name
Systematic Name on EC 2.4.1.184 - galactolipid galactosyltransferase
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1,2-diacyl-3-O-(beta-D-galactosyl)-sn-glycerol:1,2-diacyl-3-O-(beta-D-galactosyl)-sn-glycerol beta-D-galactosyltransferase
The enzyme converts monogalactosyldiacylglycerol to digalactosyldiacylglycerol, trigalactosyldiacylglycerol and tetragalactosyldiacylglycerol. All residues are connected by beta linkages. The activity is localized to chloroplast envelope membranes, but it does not contribute to net galactolipid synthesis in plants, which is performed by EC 2.4.1.46, monogalactosyldiacylglycerol synthase, and EC 2.4.1.241, digalactosyldiacylglycerol synthase. Note that the beta,beta-digalactosyldiacylglycerol formed by this enzyme is different from the more common alpha,beta-digalactosyldiacylglycerol formed by EC 2.4.1.241. The enzyme provides an important mechanism for the stabilization of the chloroplast membranes during freezing and drought stress.