Schematic diagram of the human androgen receptor structure as deduced from cDNA. The protein contains 917 amino acids, and the positions of the homopolymeric glutamine (Gln), proline (Pro), and glycine (Gly) repeat sequences and of the DNA- and hormone-binding domains are indicated using the numbering coordinates of Tilley WD, Marcelli M, Wilson JD, McPhaul MJ. Proc Natl Acad Sci U S A 1989; 86:327.