ganglioside GA2 (d18:1(4E)/18:0) + CMP-N-acetyl-beta-neuraminate = ganglioside GM2 (d18:1(4E)/18:0) + CMP + H(+)
ganglioside ga2 (d18:1(4e)/18:0) + cmp-n-acetyl-beta-neuraminate = ganglioside gm2 (d18:1(4e)/18:0) + cmp + h(+)
ganglioside GA2 (d18:1(4E)/18:0) + CMP-N-acetyl-beta-neuraminate = ganglioside GM2 (d18:1(4E)/18:0) + CMP + H(+)
ganglioside ga2 (d18:1(4e)/18:0) + cmp-n-acetyl-beta-neuraminate = ganglioside gm2 (d18:1(4e)/18:0) + cmp + h(+)