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Demonstration and partial characterization of a 7,12-dimethylbenz[alpha]anthracene-binding protein in rat adrenal
Authors:L Mankowitz  J Montelius  J Rydstr?m
Abstract:Rat adrenal cytosol was found to contain a 7,12-dimethylbenza]-anthracene (DMBA)-binding protein which is characterized by a pI of 7.2, a Kd-value of 3 microM and a maximal capacity of about 47 pmol/mg protein. The binding is highly specific for DMBA and is not displaced by 3-methylcholanthrene (MC), benza]pyrene (BP) or other polycyclic hydrocarbons. Likewise, various androgens, estrogens or glucocorticoids have no effect on the DMBA binding. It is proposed that the DMBA-binding protein may have a role in the toxic effects of DMBA or DMBA metabolites in adrenal and possibly in other DMBA-sensitive organs as well.
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