1.1.1.4	(2R,3R)-2,3-butanediol + NAD+	-	(3R)-acetoin + NADH	-	r	165097	
1.1.1.4	(2R,3R)-2,3-butanediol + NADP+	no detectable activity with (2S,3S)-2,3-butanediol	(R)-acetoin + NADPH + H+	-	r	436630	
1.1.1.4	(2R,3R)-butane-2,3-diol + NAD+	-	(3R,3S)-acetoin + NADH + H+	-	r	421731	
1.1.1.4	(2R,3R)-butane-2,3-diol + NAD+	preferred substrate	(3R,3S)-acetoin + NADH + H+	-	r	421731	
1.1.1.4	(2R,3R)-butane-2,3-diol + NAD+	Paenibacillus polymyxa ATCC 12321 has the ability to form almost exclusively the R isomer of 2,3-BDL (over 98%) when grown under anaerobic conditions	(3R,3S)-acetoin + NADH + H+	-	r	421731	
1.1.1.4	(2R,3R)-butane-2,3-diol + NAD+	preferred substrate, very low activity with the (S)-enantiomer	(3R,3S)-acetoin + NADH + H+	-	r	421731	
1.1.1.4	(2R,3R)-butane-2,3-diol + NAD+	sole product in the reduction reaction, preferred substrate in the oxidation reaction	(3R,3S)-acetoin + NADH + H+	preferred substrate in the reduction reaction	r	421731	
1.1.1.4	(2R,3R)-butane-2,3-diol + NAD+	-	(3R)-acetoin + NADH + H+	-	?	436208	
1.1.1.4	(2R,3R)-butane-2,3-diol + NAD+	-	(3R)-acetoin + NADH + H+	-	r	436208	
1.1.1.4	(2R,3R)-butane-2,3-diol + NAD+	-	(R)-acetoin + NADH + H+	-	r	436209