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