obsolete trans-2-methyl-5-isopropylhexa-2,5-dienal dehydrogenase activity (obsolete GO:0018475)
OBSOLETE. Catalysis of the reaction: trans-2-methyl-5-isopropylhexa-2,5-dienal + NAD+ + H2O = NADH + H+ + trans-2-methyl-5-isopropylhexa-2,5-dienoic acid.