a globoside MSGG (d18:1(4E)) + CMP-N-acetyl-beta-neuraminate <=> a globoside DSGG (d18:1(4E)) + CMP + H(+)
a globoside msgg (d18:1(4e)) + cmp-n-acetyl-beta-neuraminate <=> a globoside dsgg (d18:1(4e)) + cmp + h(+)
a globoside MSGG (d18:1(4E)) + CMP-N-acetyl-beta-neuraminate <=> a globoside DSGG (d18:1(4E)) + CMP + H(+)
a globoside msgg (d18:1(4e)) + cmp-n-acetyl-beta-neuraminate <=> a globoside dsgg (d18:1(4e)) + cmp + h(+)