Protocatechuate 3,4-Dioxygenase belongs to the non-heme iron family of enzymes. The active site of the enzyme contains Fe3+.
The enzyme has been used to create an oxygen scavenging system along with protocatechuate (PCA) and Trolox. The enzyme employs a nonheme iron center that catalyzes the conversion of PCA and molecular oxygen into β-carboxy-cis,cis-muconic acid, while the antioxidant Trolox suppresses slow blinking and photobleaching of cyanine dyes. It has been used in the preparation of imaging buffer along with DMB-BSA (dynein motility buffer-BSA), ATP and protocatechuate in single molecule motility assay.
Protocatechuate 3,4-Dioxygenase(PCD), from Pseudomonas sp., is used for the enzymatic determination of choline esterase when coupled with phydroxybenzoate hydroxylase. It is used to improve organic fluorophore-stability in single-molecule experiments and is used to study the metabolism of protocatechuate in Rhizobiaceae.
25 units in glass bottle
Protocatechuate 3,4-Dioxygenase catalyzes the degradation of 3,4-dihydroxybenzoate (protocatechuate) into β-carboxy-cis,cis-muconate.
Structure : Protein with nonheme iron
Inhibitors : Ag+, Hg++, PCMB
Optimum pH : 9.0
Optimum temperature : 60−65°C
pH Stability : pH 7.0−9.0 (25°C, 72hr)
Thermal stability : below 50°C (pH 6.0, 1hr)
One unit will oxidize 1.0 μmole of protocatechuate to 3-carboxy-cis,cis-muconate per min at pH 7.5 at 37 °C.
Supplied as lyophilized powder.
Protein determined by biuret.