Oxalate oxidoreductase

Template:Infobox enzyme Oxalate oxidoreductases (Template:EC number) (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. This enzyme catalyses the following chemical reaction:

oxalate + oxidized ferredoxin $\rightleftharpoons$ 2 CO₂ + reduced ferredoxin

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

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 CO₂.

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