1.3.1.5	cucurbitacin A + NAD(P)H	very low activity	Cucurbita maxima	23,24-dihydrocucurbitacin A + NAD(P)+	-	?	258618	
1.3.1.5	cucurbitacin B + NAD(P)H + H+	-	Cucurbita maxima	23,24-dihydrocucurbitacin B + NAD(P)+	-	ir	258613	
1.3.1.5	cucurbitacin B + NAD(P)H + H+	NADPH better electron donor than NADH, reduction is fairly irreversible, approx. 75% of activity with cucurbitacin E beta-D-glucoside	Cucurbita maxima	23,24-dihydrocucurbitacin B + NAD(P)+	-	ir	258613	
1.3.1.5	cucurbitacin B + NADH + H+	-	Cucurbita maxima	23,24-dihydrocucurbitacin B + NAD+	-	r	451514	
1.3.1.5	cucurbitacin C + NAD(P)H	very low activity	Cucurbita maxima	23,24-dihydrocucurbitacin C + NAD(P)+	-	?	258619	
1.3.1.5	cucurbitacin D + NAD(P)H	low activity	Cucurbita maxima	23,24-dihydrocucurbitacin D + NAD(P)+	-	?	258616	
1.3.1.5	cucurbitacin E + NAD(P)H	low activity	Cucurbita maxima	23,24-dihydrocucurbitacin E + NAD(P)+	-	?	258615	
1.3.1.5	cucurbitacin E beta-D-glucoside + NAD(P)H	best substrate	Cucurbita maxima	23,24-dihydrocucurbitacin E beta-D-glucoside + NAD(P)+	-	?	258614	
1.3.1.5	cucurbitacin F + NAD(P)H	very low activity	Cucurbita maxima	23,24-dihydrocucurbitacin F + NAD(P)+	-	?	258617