| NAD-malic enzyme | |||||||||
|---|---|---|---|---|---|---|---|---|---|
 malic enzyme tetramer, Human | |||||||||
| Identifiers | |||||||||
| EC no. | 1.1.1.39 | ||||||||
| CAS no. | 9028-46-0 | ||||||||
| 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 | ||||||||
| |||||||||
Malate dehydrogenase (decarboxylating) (EC 1.1.1.39) or NAD-malic enzyme (NAD-ME) is an enzyme that catalyzes the chemical reaction
The two substrates of this enzyme are (S)-malic acid and oxidised nicotinamide adenine dinucleotide (NAD+). Its products are pyruvic acid, carbon dioxide, and reduced NADH.[1][2]
This enzyme belongs to the family of oxidoreductases, to be specific, those acting on the CH-OH group of donor with NAD+ or NADP+ as acceptor. The systematic name of this enzyme class is (S)-malate:NAD+ oxidoreductase (decarboxylating). This enzyme participates in pyruvate metabolism and carbon fixation. NAD-malic enzyme is one of three decarboxylation enzymes used in the inorganic carbon concentrating mechanisms of C4 and CAM plants. The others are NADP-malic enzyme and PEP carboxykinase.[3][4]
See also
- Malate dehydrogenase (oxaloacetate-decarboxylating) which performs the same reaction
References
- ^ Enzyme 1.1.1.39 at KEGG Pathway Database.
- ^ Saz HJ, Hubbard JA (1957). "The oxidative decarboxylation of malate by Ascaris lumbricoides". J. Biol. Chem. 225 (2): 921–933. doi:10.1016/S0021-9258(18)64890-2. PMID 13416294.
- ^ Kanai R, Edwards, GE (1999). "3. The Biochemistry of C4 Photosynthesis". In Sage RF, Monson RK (eds.). C4 Plant Biology. pp. 43–87. ISBN 0126144400.
- ^ Christopher JT, Holtum JA (1996). "Patterns of carbon partitioning in leaves of Crassulacean acid metabolism species during deacidification". Plant Physiol. 112 (1): 393–399. doi:10.1104/pp.112.1.393. PMC 157961. PMID 12226397.
