label: a ganglioside GA1 + UDP-N-acetyl-alpha-D-glucosamine = a ganglioside beta-DGlcNAc-(1->6)-GA1 + UDP + H(+)
label_lc: a ganglioside ga1 + udp-n-acetyl-alpha-d-glucosamine = a ganglioside beta-dglcnac-(1->6)-ga1 + udp + h(+)