UMP(in) + CMP-N-acetyl-beta-neuraminate(out) => UMP(out) + CMP-N-acetyl-beta-neuraminate(in)
ump(in) + cmp-n-acetyl-beta-neuraminate(out) => ump(out) + cmp-n-acetyl-beta-neuraminate(in)
UMP(in) + CMP-N-acetyl-beta-neuraminate(out) => UMP(out) + CMP-N-acetyl-beta-neuraminate(in)
ump(in) + cmp-n-acetyl-beta-neuraminate(out) => ump(out) + cmp-n-acetyl-beta-neuraminate(in)