Dimethylmalate dehydrogenase

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dimethylmalate dehydrogenase
Identifiers
EC no. 1.1.1.84
CAS no. 37250-21-8
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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PMC articles
PubMed articles
NCBI proteins

In enzymology, dimethylmalate dehydrogenase (EC 1.1.1.84) is an enzyme that catalyzes the chemical reaction

+ NAD+
 
 
 
H+
Dimethylmalate dehydrogenase
 
H+
 
+ CO2 + NADH
 

The two substrates of this enzyme are (R)-3,3-dimethylmalic acid and oxidised nicotinamide adenine dinucleotide (NAD+). Its products are α-ketoisovaleric acid, carbon dioxide, reduced NADH, and a proton. [1] [2]

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 (R)-3,3-dimethylmalate:NAD+ oxidoreductase (decarboxylating). This enzyme is also called beta,beta-dimethylmalate dehydrogenase. This enzyme participates in pantothenate and coa biosynthesis. It has 5 cofactors: ammonia, manganese, cobalt, potassium, and NH4+.

References

  1. Enzyme 1.1.1.84 at KEGG Pathway Database.
  2. Magee PT, Snell EE (1966). "The bacterial degradation of pantothenic acid. IV. Enzymatic conversion of aldopantoate to alpha-ketoisovalerate". Biochemistry. 5 (2): 409–16. doi:10.1021/bi00866a004. PMID   4287371.