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・ Beta-D
・ Beta-D-fucosidase
・ Beta-D-galactosyl-(1-4)-L-rhamnose phosphorylase
・ Beta-D-glucopyranosyl abscisate beta-glucosidase
・ Beta-decay stable isobars
・ Beta-defensin 2
・ Beta-diketone hydrolase
・ Beta-dual space
・ Beta-Eleostearic acid
・ Beta-Endorphin
・ Beta-Ergocryptine
・ Beta-eudesmol synthase
・ Beta-farnesene synthase
・ Beta-galactofuranosidase
・ Beta-galactosidase
Beta-galactoside alpha-2,3-sialyltransferase
・ Beta-galactoside alpha-2,6-sialyltransferase
・ Beta-galactoside permease
・ Beta-galactoside transacetylase
・ Beta-galactosyl-N-acetylglucosaminylgalactosylglucosyl-ceramide beta-1,3-acetylglucosaminyltransferase
・ Beta-globin co-transcriptional cleavage ribozyme
・ Beta-glucan
・ Beta-glucan-transporting ATPase
・ Beta-glucogallin O-galloyltransferase
・ Beta-glucogallin—tetrakisgalloylglucose O-galloyltransferase
・ Beta-glucosidase
・ Beta-glucoside kinase
・ Beta-glucuronidase
・ Beta-Hexachlorocyclohexane
・ Beta-Hydride elimination


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Beta-galactoside alpha-2,3-sialyltransferase : ウィキペディア英語版
Beta-galactoside alpha-2,3-sialyltransferase

In enzymology, a beta-galactoside alpha-2,3-sialyltransferase () is an enzyme that catalyzes the chemical reaction
:CMP-N-acetylneuraminate + beta-D-galactosyl-1,3-N-acetyl-alpha-D-galactosaminyl-R \rightleftharpoons CMP + alpha-N-acetylneuraminyl-2,3-beta-D-galactosyl-1,3-N-acetyl-alpha-D- galactosaminyl-R
Thus, the two substrates of this enzyme are CMP-N-acetylneuraminate and beta-D-galactosyl-1,3-N-acetyl-alpha-D-galactosaminyl-R, whereas its 3 products are CMP, alpha-N-acetylneuraminyl-2,3-beta-D-galactosyl-1,3-N-acetyl-alpha-D-, and galactosaminyl-R.
This enzyme belongs to the family of transferases, specifically those glycosyltransferases that do not transfer hexosyl or pentosyl groups. The systematic name of this enzyme class is CMP-N-acetylneuraminate:beta-D-galactoside alpha-2,3-N-acetylneuraminyl-transferase. This enzyme participates in 7 metabolic pathways: o-glycan biosynthesis, keratan sulfate biosynthesis, glycosphingolipid biosynthesis - lactoseries, glycosphingolipid biosynthesis - globoseries, glycosphingolipid biosynthesis - ganglioseries, glycan structures - biosynthesis 1, and glycan structures - biosynthesis 2.
==Structural studies==

As of late 2007, 9 structures have been solved for this class of enzymes, with PDB accession codes , , , , , , , , and .

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