| UPA00626 | 
                    (R,R)-butane-2,3-diol biosynthesis~In some bacteria, pyruvate can be channeled via alpha-acetolactate into neutral compound 2,3-butanediol. The production of (R,R)-2,3-butanediol is enhanced when oxygen is limited and the pH is lowered. | 
                    None - {{∅}} | 
                    True - {{t}} | 
                    Unconfirmed presence | 
                     | 
                
                
                    | UER00679 | 
                    (R,R)-butane-2,3-diol from pyruvate: step 3/3~1 (R)-acetoin + 1 H(+) + 1 NADH => 1 (R,R)-butane-2,3-diol + 1 NAD(+). | 
                    True - {{t}} | 
                    True - {{t}} | 
                    Confirmed presence | 
                     | 
                
                
                    | UER00677 | 
                    (R,R)-butane-2,3-diol from pyruvate: step 1/3~2 pyruvate => 1 (S)-2-acetolactate + 1 CO(2). | 
                    None - {{∅}} | 
                    True - {{t}} | 
                    Unconfirmed presence | 
                     | 
                
                
                    | UCR02948 | 
                    (S)-2-acetolactate = (R)-acetoin + CO(2) | 
                    None - {{∅}} | 
                    None - {{∅}} | 
                    Unexplained | 
                     | 
                
                
                    | UER00678 | 
                    (R,R)-butane-2,3-diol from pyruvate: step 2/3~1 (S)-2-acetolactate => 1 (R)-acetoin + 1 CO(2). | 
                    None - {{∅}} | 
                    None - {{∅}} | 
                    Unexplained | 
                     | 
                
                
                    | UCR00226 | 
                    (S)-2-acetolactate + CO(2) = 2 pyruvate | 
                    None - {{∅}} | 
                    True - {{t}} | 
                    Unconfirmed presence | 
                     | 
                
                
                    | UCR02946 | 
                    (R,R)-butane-2,3-diol + NAD(+) = (R)-acetoin + H(+) + NADH | 
                    True - {{t}} | 
                    True - {{t}} | 
                    Confirmed presence | 
                     | 
                
                
                    | ULS00333 | 
                    (R,R)-butane-2,3-diol from pyruvate | 
                    None - {{∅}} | 
                    True - {{t}} | 
                    Unconfirmed presence | 
                     |