Fig. (4) Lineweaver-Burk plot for enzymatic decomposition of OHCP/ALDO by snake venom phosphodiesterase (EC 3.1.4.1.) (●) and effect of 5`AMP (▲) and 3`AMP (■) on decomposition activity. Photometric determination of NADPH+H+ after addition of snake venom phosphodiesterase to a solution containing NADP, aldehyde dehydrogenase and OHCP in phosphate buffer.