EC Number |
Substrates |
Organism |
Products |
Reversibility |
---|
1.1.1.B20 | (2R,3S)-butane-2,3-diol + NAD+ |
- |
Bacillus licheniformis |
acetoin + NADH + H+ |
- |
r |
1.1.1.B20 | (3R)-acetoin + NADH + H+ |
- |
Bacillus licheniformis |
meso-2,3-butanediol + NAD+ |
- |
r |
1.1.1.B20 | (3R)-acetoin + NADH + H+ |
- |
Bacillus licheniformis |
(2R,3S)-butane-2,3-diol + NAD+ |
- |
r |
1.1.1.B20 | acetoin + NADH + H+ |
- |
Bacillus licheniformis |
(2R,3S)-butane-2,3-diol + NAD+ |
- |
r |
1.1.1.B20 | acetoin + NADH + H+ |
racemic mixture of (3S/3R)-acetoin |
Bacillus licheniformis |
meso-2,3-butanediol + NAD+ |
- |
r |
1.1.1.B20 | more |
stereoisomeric composition analysis of 2,3-butanediol produced by strain 10-1-A using gas chromatography. Strain 10-1-A produces a mixture of (2R,3R)-2,3-butanediol and meso-2,3-butanediol with a ratio of nearly 1:1. As (3R)-acetoin is the major source of (2R,3R)-2,3-butanediol and meso-2,3-butanediol, a meso-butanediol dehydrogenase and a (2R,3R)-2,3-butanediol dehydrogenase are co-present in strain 10-1-A |
Bacillus licheniformis |
? |
- |
? |
1.1.1.B20 | more |
most of the Bacillus strains produce 2,3-butanediol but not acetoin as their major product |
Bacillus licheniformis |
? |
- |
- |
1.1.1.B20 | (3R)-acetoin + NADH + H+ |
- |
Bacillus licheniformis 10-1-A |
meso-2,3-butanediol + NAD+ |
- |
r |
1.1.1.B20 | acetoin + NADH + H+ |
racemic mixture of (3S/3R)-acetoin |
Bacillus licheniformis 10-1-A |
meso-2,3-butanediol + NAD+ |
- |
r |
1.1.1.B20 | more |
stereoisomeric composition analysis of 2,3-butanediol produced by strain 10-1-A using gas chromatography. Strain 10-1-A produces a mixture of (2R,3R)-2,3-butanediol and meso-2,3-butanediol with a ratio of nearly 1:1. As (3R)-acetoin is the major source of (2R,3R)-2,3-butanediol and meso-2,3-butanediol, a meso-butanediol dehydrogenase and a (2R,3R)-2,3-butanediol dehydrogenase are co-present in strain 10-1-A |
Bacillus licheniformis 10-1-A |
? |
- |
? |