label: CMP-N-acetylneuraminate monooxygenase activity
label_lc: cmp-n-acetylneuraminate monooxygenase activity
description: "Catalysis of the reaction: CMP-N-acetyl-beta-neuraminate + 2 Fe(II)-[cytochrome b5] + 2 H+ + O2 = CMP-N-glycoloyl-beta-neuraminate + 2 Fe(III)-[cytochrome b5] + H2O."