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In enzymology, a fucosylgalactoside 3-alpha-galactosyltransferase () is an enzyme that catalyzes the chemical reaction :UDP-galactose + alpha-L-fucosyl-(1->2)-D-galactosyl-R UDP + alpha-D-galactosyl-(1->3)-()-D-galactosyl-R Thus, the two substrates of this enzyme are UDP-galactose and alpha-L-fucosyl-(1->2)-D-galactosyl-R, whereas its two products are UDP and 2)" TITLE="alpha-L-fucosyl(1->2)">)-D-galactosyl-R" TITLE="alpha-D-galactosyl-(1->3)-()-D-galactosyl-R">alpha-D-galactosyl-(1->3)-()-D-galactosyl-R. This enzyme belongs to the family of glycosyltransferases, specifically the hexosyltransferases. The systematic name of this enzyme class is UDP-galactose:alpha-L-fucosyl-(1->2)-D-galactoside 3-alpha-D-galactosyltransferase. Other names in common use include UDP-galactose:O-alpha-L-fucosyl(1->2)D-galactose, alpha-D-galactosyltransferase, UDPgalactose:glycoprotein-alpha-L-fucosyl-(1,2)-D-galactose, 3-alpha-D-galactosyltransferase, (group substance ) alpha-galactosyltransferase, blood-group substance B-dependent galactosyltransferase, glycoprotein-fucosylgalactoside alpha-galactosyltransferase, histo-blood group B transferase, and histo-blood substance B-dependent galactosyltransferase. This enzyme participates in 3 metabolic pathways: glycosphingolipid biosynthesis - lactoseries, glycosphingolipid biosynthesis - neo-lactoseries, and glycan structures - biosynthesis 2. ==Structural studies== As of late 2007, 7 structures have been solved for this class of enzymes, with PDB accession codes , , , , , , and . 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Fucosylgalactoside 3-alpha-galactosyltransferase」の詳細全文を読む スポンサード リンク
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