Photoaffinity labelling of androgen receptors with 17 beta-hydroxy-17 alpha-[3H]methyl-4,9,11-estratrien-3-one |
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Authors: | A O Brinkmann G G Kuiper W de Boer E Mulder H J van der Molen |
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Abstract: | The synthetic androgen 17 beta-hydroxy-17 alpha-3H]methyl-4,9,11-estratrien-3-one (R1881) has been used as photoaffinity label to characterize androgen receptors in calf uterus and rat prostate. Polyacrylamide gel electrophoresis under denaturing conditions showed that the DNA-binding form of the androgen receptor in calf uterus cytosol is a protein with a molecular mass of 98 kD. In rat prostate cytosol an androgen receptor with a molecular mass of 46 kD could be photoaffinity labelled with R1881. The photoaffinity labelling procedure described here provides a method for studying the hormone binding domain of androgen receptors in partial purified preparations. |
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