Fjord-region benzo[g]chrysene-11,12-dihydrodiol and benzo[c]phenanthrene-3,4-dihydrodiol as substrates for rat liver dihydrodiol dehydrogenase (AKR1C9): structural basis for stereochemical preference.

Abstract excerpt

This study demonstrates that benzo[g]chrysene-11,12-dihydrodiol (B[g]C-11,12-dihydrodiol) derived from the fjord-region parent hydrocarbon B[g]C is oxidized by rat AKR1C9 with a k c a t/ K m 100 times greater than that observed with the commonly studied bay-region benzo[ a]pyrene-7,8-dihydrodiol (B[a]P-7,8-dihydrodiol). Conversely, despite its strikingly similar structure to B[ g]C-11,12-dihydrodiol, benzo[...

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