a ganglioside GA1 (d18:1(4E)) + UDP + H(+) => a ganglioside GA2 (d18:1(4E)) + UDP-alpha-D-galactose
a ganglioside ga1 (d18:1(4e)) + udp + h(+) => a ganglioside ga2 (d18:1(4e)) + udp-alpha-d-galactose
a ganglioside GA1 (d18:1(4E)) + UDP + H(+) => a ganglioside GA2 (d18:1(4E)) + UDP-alpha-D-galactose
a ganglioside ga1 (d18:1(4e)) + udp + h(+) => a ganglioside ga2 (d18:1(4e)) + udp-alpha-d-galactose