Digalactosyldiacylglycerol synthase

digalactosyldiacylglycerol synthase
Identifiers
EC number	2.4.1.241
Databases
IntEnz	IntEnz view
BRENDA	BRENDA entry
ExPASy	NiceZyme view
KEGG	KEGG entry
MetaCyc	metabolic pathway
PRIAM	profile
PDB structures	RCSB PDB PDBe PDBsum
Gene Ontology	AmiGO / EGO
Search PMC articles PubMed articles

In enzymology, a digalactosyldiacylglycerol synthase (EC 2.4.1.241) is an enzyme that catalyzes the chemical reaction

UDP-galactose + 3-(beta-D-galactosyl)-1,2-diacyl-sn-glycerol $\rightleftharpoons$ UDP + 3-[alpha-D-galactosyl-(1->6)-beta-D-galactosyl]-1,2-diacyl-sn- glycerol

Thus, the two substrates of this enzyme are UDP-galactose and 3-(beta-D-galactosyl)-1,2-diacyl-sn-glycerol, whereas its 3 products are UDP, [[3-[alpha-D-galactosyl-(1->6)-beta-D-galactosyl]-1,2-diacyl-sn-]], and glycerol.

This enzyme belongs to the family of glycosyltransferases, specifically the hexosyltransferases. The systematic name of this enzyme class is UDP-galactose:3-(beta-D-galactosyl)-1,2-diacyl-sn-glycerol 6-alpha-galactosyltransferase. Other names in common use include DGD1, DGD2, DGDG synthase (ambiguous), UDP-galactose-dependent DGDG synthase, UDP-galactose-dependent digalactosyldiacylglycerol synthase, and UDP-galactose:MGDG galactosyltransferase. This enzyme participates in glycerolipid metabolism.

References

• Kelly AA, Dormann P (2002). "DGD2, an arabidopsis gene encoding a UDP-galactose-dependent digalactosyldiacylglycerol synthase is expressed during growth under phosphate-limiting conditions". J. Biol. Chem. 277 (2): 1166–73. doi:10.1074/jbc.M110066200. PMID 11696551. 
• Hartel H, Dormann P, Benning C (2000). "DGD1-independent biosynthesis of extraplastidic galactolipids after phosphate deprivation in Arabidopsis". Proc. Natl. Acad. Sci. U. S. A. 97 (19): 10649–54. doi:10.1073/pnas.180320497. PMC 27079. PMID 10973486. http://www.pubmedcentral.nih.gov/articlerender.fcgi?tool=pmcentrez&artid=27079. 
• Kelly AA, Froehlich JE, Dormann P (2003). "Disruption of the two digalactosyldiacylglycerol synthase genes DGD1 and DGD2 in Arabidopsis reveals the existence of an additional enzyme of galactolipid synthesis". Plant. Cell. 15 (11): 2694–706. doi:10.1105/tpc.016675. PMC 280572. PMID 14600212. http://www.pubmedcentral.nih.gov/articlerender.fcgi?tool=pmcentrez&artid=280572. 
• Benning C, Ohta H (2005). "Three enzyme systems for galactoglycerolipid biosynthesis are coordinately regulated in plants". J. Biol. Chem. 280 (4): 2397–400. doi:10.1074/jbc.R400032200. PMID 15590685. 

This enzyme-related article is a stub. You can help Wikipedia by expanding it.v · Categories: Enzyme stubs EC 2.4.1 Enzymes of unknown structure Wikimedia Foundation. 2010. Игры ⚽ Нужно решить контрольную? Winston-Salem IceHawks Diglucosyl diacylglycerol synthase Look at other dictionaries: List of EC numbers (EC 2) — This list contains a list of EC numbers for the second group, EC 2, transferases, placed in numerical order as determined by the Nomenclature Committee of the International Union of Biochemistry and Molecular Biology.EC 2.1: Transferring One… …   Wikipedia Galactolipid galactosyltransferase — In enzymology, a galactolipid galactosyltransferase (EC number|2.4.1.184) is an enzyme that catalyzes the chemical reaction:2 3 (beta D galactosyl) 1,2 diacyl sn glycerol ightleftharpoons 3 [alpha D galactosyl (1 >6) beta D galactosyl] 1,2 diacyl …   Wikipedia 18+ © Academic, 2000-2024 Contact us: Technical Support, Advertising Dictionaries export, created on PHP, Joomla, Drupal, WordPress, MODx. Mark and share Search through all dictionaries Translate… Search Internet Share the article and excerpts Direct link … Do a right-click on the link above and select “Copy Link”