1.5.1.9	N6-(L-1,3-dicarboxypropyl)-L-lysine + NAD+ + H2O	involved in lysine catabolism	
1.5.1.9	N6-(L-1,3-dicarboxypropyl)-L-lysine + NAD+ + H2O	the bifunctional reductase/saccharopine dehydrogenase contains the first two enzyme of lysine catabolism, is concertedly regulated by metabolic and stress-associated signals. The level of the bifunctional enzyme is strongly enhanced by abscisic acid, jasmonate, and sugar starvation, whereas excess sugars and nitrogen starvation reduce its level	
1.5.1.9	N6-(L-1,3-dicarboxypropyl)-L-lysine + NAD+ + H2O	-	
1.5.1.9	N6-(L-1,3-dicarboxypropyl)-L-lysine + NAD+ + H2O	reaction of the SDH domain	
1.5.1.9	saccharopine + NAD+ + H2O	-