ENTRY       EC 2.4.1.62
NAME        Ganglioside galactosyltransferase
            UDPgalactose--ceramide galactosyltransferase
CLASS       Transferases
            Glycosyltransferases
            Hexosyltransferases
SYSNAME     UDPgalactose:N-acetyl-D-galactosaminyl-(N-acetylneuraminyl)-
            $D-galactosyl-D-glucosyl-N-acylsphingosine beta-1,3-D-
            $galactosyltransferase
REACTION    UDPgalactose + N-Acetyl-D-galactosaminyl-(N-acetylneuraminyl)-
            $D-galactosyl-1,4-beta-D-glucosyl-N-acylsphingosine = UDP +
            D-Galactosyl-1,3-beta-N-acetyl-D-galactosaminyl-(N-
            $acetylneuraminyl)-D-galactosyl-D-glucosyl-N-acylsphingosine
SUBSTRATE   UDPgalactose
            N-Acetyl-D-galactosaminyl-(N-acetylneuraminyl)-
            $D-galactosyl-1,4-beta-D-glucosyl-N-acylsphingosine
PRODUCT     UDP
            D-Galactosyl-1,3-beta-N-acetyl-D-galactosaminyl-(N-
            $acetylneuraminyl)-D-galactosyl-D-glucosyl-N-acylsphingosine
COMMENT     The substrate is also known as GM2.
PATHWAY     PATH: MAP00600  Sphingoglycolipid metabolism
DBLINKS     University of Geneva ENZYME DATA BANK: 2.4.1.62
            WIT (What Is There) Metabolic Reconstruction: 2.4.1.62
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