Ontology highlight
ABSTRACT:
SUBMITTER: Rudolph J
PROVIDER: S-EPMC4204890 | biostudies-literature | 2014 Oct
REPOSITORIES: biostudies-literature
Rudolph Johannes J Erbse Annette H AH Behlen Linda S LS Copley Shelley D SD
Biochemistry 20141006 41
Pentachlorophenol (PCP) hydroxylase, the first enzyme in the pathway for degradation of PCP in Sphingobium chlorophenolicum, is an unusually slow flavin-dependent monooxygenase (k(cat) = 0.02 s⁻¹) that converts PCP to a highly reactive product, tetrachlorobenzoquinone (TCBQ). Using stopped-flow spectroscopy, we have shown that the steps up to and including formation of TCBQ are rapid (5-30 s⁻¹). Before products can be released from the active site, the strongly oxidizing TCBQ abstracts an electr ...[more]