a beta-D-galactosyl-(1->4)-beta-D-glucosyl-(1<->1)-ceramide + CMP-N-acetyl-beta-neuraminate => a ganglioside GM3 + CMP + H(+)
a beta-d-galactosyl-(1->4)-beta-d-glucosyl-(1<->1)-ceramide + cmp-n-acetyl-beta-neuraminate => a ganglioside gm3 + cmp + h(+)
a beta-D-galactosyl-(1->4)-beta-D-glucosyl-(1<->1)-ceramide + CMP-N-acetyl-beta-neuraminate => a ganglioside GM3 + CMP + H(+)
a beta-d-galactosyl-(1->4)-beta-d-glucosyl-(1<->1)-ceramide + cmp-n-acetyl-beta-neuraminate => a ganglioside gm3 + cmp + h(+)