(S) carnitine 3 dehydrogenase

In enzymology, a (S)-carnitine 3-dehydrogenase (EC 1.1.1.254) is an enzyme that catalyzes the chemical reaction

Thus, the two substrates of this enzyme are (S)-carnitine and NAD⁺, whereas its 3 products are 3-dehydrocarnitine, NADH, and H⁺.

This enzyme belongs to the family of oxidoreductases, specifically those acting on the CH-OH group of donor with NAD⁺ or NADP⁺ as acceptor. The systematic name of this enzyme class is (S)-carnitine:NAD⁺ oxidoreductase.