Figure 4
From: Oxidation of dibenzothiophene (DBT) by Serratia marcescens UCP 1549 formed biphenyl as final product
Proposed (so called 4S) pathway for DBT desulfurization by Serratia marcescens (UCP 1549). The DBT desulfurization pathway results: (1) dibenzothiophene, (2) dibenzothiophene oxide, (3) dibenzothiophene dioxide, (4) sulfinato phenyl phenol, (5) hydroxyphenyl (6) biphenyl. The structure on parentheses is the metabolite detected, other structures are suggested, not detected.