UDP-N-acetyl-D-mannosamine dehydrogenase activity
Catalysis of the reaction: UDP-N-acetyl-alpha-D-mannosamine + 2 NAD+ + H2O = UDP-N-acetyl-alpha-D-mannosaminuronate + 2 NADH + 2 H+.
GO:0016616
oxidoreductase activity, acting on the CH-OH group of donors, NAD or NADP as acceptor
is_a