5-carboxymethyl-2-hydroxymuconic-semialdehyde dehydrogenase activity
5-carboxymethyl-2-hydroxymuconic-semialdehyde dehydrogenase activity
Catalysis of the reaction: 5-carboxymethyl-2-hydroxymuconate semialdehyde + H2O + NAD+ = 5-carboxymethyl-2-hydroxymuconate + NADH + H+.