Carboxynorspermidine synthase

Carboxynorspermidine synthase (, carboxynorspermidine dehydrogenase, carboxyspermidine dehydrogenase, CASDH, CANSDH) is an enzyme with systematic name carboxynorspermidine:NADP+ oxidoreductase. This enzyme catalyses the following chemical reactions


 * (1) carboxynorspermidine + H2O + NADP+ $$\rightleftharpoons$$ L-aspartate 4-semialdehyde + propane-1,3-diamine + NADPH + H+
 * (2) carboxyspermidine + H2O + NADP+ $$\rightleftharpoons$$ L-aspartate 4-semialdehyde + putrescine + NADPH + H+

The reaction takes place in the opposite direction.