A copper‐containing protein that inhibits nitrite reductase from Pseudomonas aeruginosa

Abstract
A non-blue copper-containing glycoprotein was isolated from Pseudomonas aeruginosa . The protein has a molecular mass of 10 kDa and contains 1 atom of EPR-detectable type II copper. The protein inhibits oxidation of both azurin and cytochrome c -551 catalyzed by nitrite reductase from Ps. aeruginosa . Thus, it may be considered as an endogenous inhibitor of nitrite reductase.