ID 1.3.1.27 DE 2-hexadecenal reductase. AN 2-alkenal reductase. CA hexadecanal + NADP(+) = (2E)-hexadecenal + H(+) + NADPH. CC -!- Specific for long chain 2-trans- and 2-cis-alkenals, with chain CC length optimum around 14 to 16 carbon atoms. //