Lactate 2-monooxygenase

Lactate 2-monooxygenase
Identifiers
EC no.1.13.12.4
CAS no.9028-72-2
Databases
BRENDAenzyme data
ExPASyNiceZyme view
KEGGenzyme entry
MetaCycmetabolic pathway
Rheareactions
PDB structuresRCSB PDB PDBe PDBsum
Gene OntologyAmiGO / QuickGO
Search
PMCarticles
PubMedarticles
NCBIproteins

Lactate 2-monooxygenase (EC 1.13.12.4) is an enzyme that catalyzes the chemical reaction

 
O2
H2O
Rightward reaction arrow with minor substrate(s) from top left and minor product(s) to top right
 
 
 
+ CO2
 

The two substrates of this enzyme are L-lactic acid and oxygen. Its products are acetic acid, carbon dioxide, and water.[1][2][3]

This enzyme belongs to the family of oxidoreductases, specifically those acting on single donors with O2 as oxidant and incorporation of two atoms of oxygen into the substrate (oxygenases). The oxygen incorporated need not be derived from O with incorporation of one atom of oxygen (internal monooxygenases o internal mixed-function oxidases). The systematic name of this enzyme class is (S)-lactate:oxygen 2-oxidoreductase (decarboxylating). Other names in common use include lactate oxidative decarboxylase, lactate oxidase, lactic oxygenase, lactate oxygenase, lactic oxidase, L-lactate monooxygenase, lactate monooxygenase, and L-lactate-2-monooxygenase. This enzyme participates in pyruvate metabolism. It employs one cofactor, flavin mononucleotide.[1]

Structural studies

As of late 2007, only one structure has been solved for this class of enzymes, with the PDB accession code PDB: 2DU2​.

References

  1. 1 2 Enzyme 1.13.12.4 at KEGG Pathway Database.
  2. ↑ Hayaishi O, Sutton WB (1957). "Enzymatic oxygen fixation into acetate concomitant with the enzymatic decarboxylation of L-lactate". J. Am. Chem. Soc. 79 (17): 4809–4810. Bibcode:1957JAChS..79.4809H. doi:10.1021/ja01574a060.
  3. ↑ Sutton WB (May 1957). "Mechanism of action and crystallization of lactic oxidative decarboxylase from Mycobacterium phlei". The Journal of Biological Chemistry. 226 (1): 395–405. doi:10.1016/S0021-9258(18)64840-9. PMID 13428772.