Abstract
Pentachlorophenol (PCP) hydroxylase purified from Flavobacterium sp. strain ATCC 39723 converted PCP or 2,3,5,6-tetrachlorophenol to tetrachloro-p-hydroquinone (TeCH) with the co-consumption of O2 and NADPH. The purified enzyme incorporated 18O from 18O2 but not from H218O into the reaction end product TeCH. The results clearly demonstrate that PCP is oxidatively converted to TeCH by a monooxygenase-type enzyme from Flavobacterium sp. strain ATCC 39723.
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