LA Golovleva | PubMed Health

PubMed1999

Phenol hydroxylases: An update

This paper reviews the enzymology of microbial degradation of chlorinated phenols, a significant group of dangerous environmental pollutants. Two groups of phenol hydroxylases responsible for hydroxylation of (halo)phenols in the ortho or para position have been described. Among ortho-hydroxylating phenol hydroxylases, one-component flavoproteins or multicomponent enzyme systems are recognized, whereas single- or two-component enzyme systems catalyze para-hydroxylation of halophenols.

Journal Article↗

PubMed1999

Extracellular oxidases from solid-state culture of the ligninolytic fungus panus tigrinus 8/18

Three extracellular oxidases were purified and characterized from a solid-state culture of the ligninolytic fungus Panus tigrinus 8/18. Oxidases 1 and 2 have physicochemical properties and substrate specificity typical for laccases but have no "blue" maximum in the absorption spectra. They seem to be forms of modified "yellow" laccase. The absorption spectrum of oxidase 4 is similar to that of oxidases 1 and 2. However, the molecular weight (35 kD) and substrate specificity (no reaction with guaiacol, catechol, syringic acid, and syringaldazine) are different.

Journal Article↗