3-Carboxy-cis,cis-muconic acid

3-Carboxy-"cis","cis"-muconic acid is a metabolite of the catechin degradation by "Bradyrhizobium japonicum".
The enzyme 3-carboxy-"cis","cis"-muconate cycloisomerase uses 2-carboxy-2,5-dihydro-5-oxofuran-2-acetate to produce 3-carboxy-"cis","cis"-muconate.
The enzyme carboxy-"cis","cis"-muconate cyclase uses 3-carboxy-2,5-dihydro-5-oxofuran-2-acetate to produce 3-carboxy-"cis","cis"-muconate.
The enzyme protocatechuate 3,4-dioxygenase uses 3,4-dihydroxybenzoate and O2 to produce 3-carboxy-"cis","cis"-muconate.