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(+) => ganglioside ga2 (d18:1(4e)/18:0) + cmp-n-acetyl-beta-neuraminate