title: Photoaffinity labelling of androgen receptors with 17 beta-hydroxy-17 alpha-[3H]methyl-4,9,11-estratrien-3-one.
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.
mesh_terms: D000345:Affinity Labels / Q000378:metabolism*; D000818:Animals; D002417:Cattle; D003600:Cytosol / Q000378:metabolism; D013196:Dihydrotestosterone / Q000378:metabolism; D004591:Electrophoresis, Polyacrylamide Gel; D004963:Estrenes / Q000378:metabolism*; D005260:Female; D008297:Male; D015741:Metribolone; D008970:Molecular Weight; D010777:Photochemistry; D011467:Prostate / Q000378:metabolism; D051381:Rats; D011919:Rats, Inbred Strains; D011944:Receptors, Androgen / Q000378:metabolism*; D011980:Receptors, Progesterone / Q000378:metabolism; D011987:Receptors, Steroid / Q000378:metabolism*; D014599:Uterus / Q000378:metabolism
chemical_list: D000345:Affinity Labels; D004963:Estrenes; D011944:Receptors, Androgen; D011980:Receptors, Progesterone; D011987:Receptors, Steroid; D013196:Dihydrotestosterone; D015741:Metribolone