FIG. 3.

Degradation pathways of CHMs by anaerobic enrichment cultures and axenic cultures of desulfitobacteria in relation to aerobic degradation of TCHQ and lindane. PCP is aerobically degraded by a series of enzymes including pentachlorophenol hydroxylase (PH), TRD, and dichlorohydroquinone dioxygenase. Lindane is degraded aerobically by a series of proteins (LinA, -B, -C, and -D), including the 2,5-DCHQ reductive dehalogenase (LinD). HQ, 1,4-dihydroquinone; 2,6-DCHQ, 2,6-dichlorohydroquinone; 2-CHQ, 2-chlorohydroquinone.