| lipopolysaccharide 3-alpha-galactosyltransferase | |
| Ec Number: | 2.4.1.44 |
| Cas Number: | 9073-98-7 |
| Go Code: | 0008918 |
In enzymology, a lipopolysaccharide 3-alpha-galactosyltransferase is an enzyme that catalyzes the chemical reaction
UDP-galactose + lipopolysaccharide
\rightleftharpoons
Thus, the two substrates of this enzyme are UDP-galactose and lipopolysaccharide, whereas its two products are UDP and 3-alpha-D-galactosyl-[lipopolysaccharide glucose].
This enzyme belongs to the family of glycosyltransferases, specifically the hexosyltransferases. The systematic name of this enzyme class is UDP-galactose:lipopolysaccharide 3-alpha-D-galactosyltransferase. Other names in common use include UDP-galactose:lipopolysaccharide alpha,3-galactosyltransferase, UDP-galactose:polysaccharide galactosyltransferase, uridine diphosphate galactose:lipopolysaccharide, alpha-3-galactosyltransferase, uridine diphosphogalactose-lipopolysaccharide, and alpha,3-galactosyltransferase. This enzyme participates in lipopolysaccharide biosynthesis and glycan structures - biosynthesis 2.
As of late 2007, two structures have been solved for this class of enzymes, with PDB accession codes and .