| homoisocitrate dehydrogenase | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Homoisocitrate dehydrogenase tetramer, Thermus thermophilus | |||||||||
| Identifiers | |||||||||
| EC no. | 1.1.1.87 | ||||||||
| CAS no. | 37250-23-0 | ||||||||
| 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 | ||||||||
| |||||||||
In enzymology, homoisocitrate dehydrogenase (EC 1.1.1.87) is an enzyme that catalyzes the chemical reaction
The two substrates of this enzyme are (-)-homoisocitric acid and oxidised nicotinamide adenine dinucleotide (NAD+). Its products are 2-oxoadipic acid, carbon dioxide, reduced NADH, and a proton. [1] [2] [3] [4]
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 (1R,2S)-1-hydroxybutane-1,2,4-tricarboxylate:NAD+ oxidoreductase (decarboxylating). Other names in common use include 2-hydroxy-3-carboxyadipate dehydrogenase, 3-carboxy-2-hydroxyadipate dehydrogenase, homoisocitric dehydrogenase, (−)-1-hydroxy-1,2,4-butanetricarboxylate:NAD+ oxidoreductase, (decarboxylating), 3-carboxy-2-hydroxyadipate:NAD+ oxidoreductase (decarboxylating), and HICDH. This enzyme participates in lysine biosynthesis.
As of late 2007, only one structure has been solved for this class of enzymes, with the PDB accession code 1X0L.