Oxalate oxidoreductase

Oxalate oxidoreductase
Identifiers
EC number 1.2.7.10
Databases
IntEnz IntEnz view
BRENDA BRENDA entry
ExPASy NiceZyme view
KEGG KEGG entry
MetaCyc metabolic pathway
PRIAM profile
PDB structures RCSB PDB PDBe PDBsum

Oxalate oxidoreductases (EC 1.2.7.10) (OOR) are a relatively recently discovered group of enzymes that break down oxalate, a problematic molecule nutritionally. The first one to have been characterized has the systematic name oxalate:ferredoxin oxidoreductase.[1][2] This enzyme catalyses the following chemical reaction:

oxalate + oxidized ferredoxin 2 CO2 + reduced ferredoxin

This enzyme contains thiamine diphosphate and [4Fe-4S] clusters.

Another OOR from acetogenic bacteria, a thiamine pyrophosphate(TPP)-dependent OOR, had its mechanism of action decoded step by step under X-ray crystallography to rather simplistically (one-carbon) split oxalate, producing low-potential electrons and C02.[3]

References

  1. Daniel, S.L.; Pilsl, C.; Drake, H.L. (2004). "Oxalate metabolism by the acetogenic bacterium Moorella thermoacetica". FEMS Microbiol. Lett. 231 (1): 39–43. doi:10.1016/S0378-1097(03)00924-8. PMID 14769464.
  2. Pierce, E.; Becker, D.F.; Ragsdale, S.W. (2010). "Identification and characterization of oxalate oxidoreductase, a novel thiamine pyrophosphate-dependent 2-oxoacid oxidoreductase that enables anaerobic growth on oxalate". J. Biol. Chem. 285 (52): 40515–40524. doi:10.1074/jbc.M110.155739. PMC 3003350Freely accessible. PMID 20956531.
  3. http://www.pnas.org/content/early/2015/12/23/1518537113.full.pdf
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