ID 2.4.1.62 DE ganglioside galactosyltransferase. CA a ganglioside GM2 (d18:1(4E)) + UDP-alpha-D-galactose = a ganglioside GM1 CA (d18:1(4E)) + H(+) + UDP. CC -!- The substrate is also known as gangloside GM2, the product as CC gangloside GM1a. DR Q5TJE8, B3GT4_CANLF; O96024, B3GT4_HUMAN; Q9Z0F0, B3GT4_MOUSE; DR O88178, B3GT4_RAT ; Q24157, BRN_DROME ; //