1.2.1.86 alpha-methyl cinnamaldehyde + NAD+ + H2O isoform citral dehydrogenase I shows 62% activity compared to citral, isoform citral dehydrogenase II shows 85% activity compared to citral Persicaria minor alpha-methyl cinnamic acid + NADH + H+ - ? 459179 1.2.1.86 citral + NAD+ + H2O - Persicaria minor geranic acid + NADH + H+ - ir 458592 1.2.1.86 citral + NAD+ + H2O 100% activity Persicaria minor geranic acid + NADH + H+ - ir 458592 1.2.1.86 geranial + H2O + NAD+ - Castellaniella defragrans geranate + NADH + H+ - ? 420713 1.2.1.86 geranial + H2O + NAD+ - Castellaniella defragrans geranate + NADH + H+ - ir 420713 1.2.1.86 geranial + H2O + NAD+ geranial is partially transformed into geranic acid by NAD+-dependent citral dehydrogenase activity Penicillium digitatum geranate + NADH + H+ - ? 420713 1.2.1.86 geranial + H2O + NAD+ geranial is partially transformed into geranic acid by NAD+-dependent citral dehydrogenase activity Penicillium digitatum ATCC 201167 geranate + NADH + H+ - ? 420713 1.2.1.86 geranial + H2O + NAD+ - Castellaniella defragrans 65Phen geranate + NADH + H+ - ? 420713 1.2.1.86 geranial + NAD+ + H2O - Persicaria minor geranic acid + NADH + H+ - ? 459706 1.2.1.86 additional information the enzyme shows no reaction with NADP+. No reduction reaction is observed either with NADH or NADPH as a coenzyme Persicaria minor ? - - 89