Bacterial degradation of pyrene in minimal salt medium mediated by catechol dioxygenases: Enzyme purification and molecular size determination

► Microbial degradation of pyrene in MSM. ► Involvement of catechol 1,2 dioxygenase and catechol 2,3 dioxygenase in pyrene degradation. ► Purification and molecular size determination of catechol 1,2 dioxygensae.