(2S)-5,5-dimethyl-2,3,4,5-tetrahydropyridine-2,6-dicarboxylate + NADH + 2 H(+) <=> (6S)-3,3-dimethylpiperidine-2,6-dicarboxylate + NAD(+)
(2s)-5,5-dimethyl-2,3,4,5-tetrahydropyridine-2,6-dicarboxylate + nadh + 2 h(+) <=> (6s)-3,3-dimethylpiperidine-2,6-dicarboxylate + nad(+)