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Proposed initial attack on CAR (A) and the CAR analogues DD (B), dibenzothiophene (C), and fluorene (D) by CARDO from Pseudomonas sp. strain CA10. The small arrows indicate the positions of the enzymatic incorporation of oxygen. The structures shown in brackets are unstable intermediates that have not been characterized. Absolute stereochemistry is not intended. The shaded areas represent the structure of anthracene or DD.
