(S)-carnitine 3-dehydrogenase | |||||||||
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Identifiers | |||||||||
EC no. | 1.1.1.254 | ||||||||
CAS no. | 169277-49-0 | ||||||||
Databases | |||||||||
IntEnz | IntEnz view | ||||||||
BRENDA | BRENDA entry | ||||||||
ExPASy | NiceZyme view | ||||||||
KEGG | KEGG entry | ||||||||
MetaCyc | metabolic pathway | ||||||||
PRIAM | profile | ||||||||
PDB structures | RCSB PDB PDBe PDBsum | ||||||||
Gene Ontology | AmiGO / QuickGO | ||||||||
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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.
3-Dehydrocarnitine is an aliphatic quaternary ammonium betaine that is part of the carnitine family. At physiological pH of 7.3, the major species of 3-dehydrocarnitine is its zwitterionic form, the conjugate base of 3-dehydrocarnitinium. 3-Dehydrocarnitine is classified as a short-chain keto acid, as it has a carbon chain containing less than six carbon atoms. It is an intermediate in carnitine degradation and is formed from D- or L-carnitine. The enzymes responsible for the degradation of carnitine to 3-dehydrocarnitine are carnitine-3-dehydrogenase or (S)-carnitine-3-dehydrogenase.
In enzymology, a 4-hydroxybutyrate dehydrogenase (EC 1.1.1.61) is an enzyme that catalyzes the chemical reaction
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NADH:ubiquinone reductase (non-electrogenic) (EC 1.6.5.9, NDH-2, ubiquinone reductase, coenzyme Q reductase, dihydronicotinamide adenine dinucleotide-coenzyme Q reductase, DPNH-coenzyme Q reductase, DPNH-ubiquinone reductase, NADH-coenzyme Q oxidoreductase, NADH-coenzyme Q reductase, NADH-CoQ oxidoreductase, NADH-CoQ reductase) is an enzyme with systematic name NADH:ubiquinone oxidoreductase. This enzyme catalyses the following chemical reaction:
NADH dehydrogenase is an enzyme that converts nicotinamide adenine dinucleotide (NAD) from its reduced form (NADH) to its oxidized form (NAD+). Members of the NADH dehydrogenase family and analogues are commonly systematically named using the format NADH:acceptor oxidoreductase. The chemical reaction these enzymes catalyze is generally represented with the following equation: