前列腺组织中含有丰富的雄激素和与之结合的蛋白，这些结合蛋白能够吸纳、浓聚性激素，因此将它们统称为性激素结合蛋白(sex hormone_binding globulin，SHBG)．其中一种可以局部结合、凝聚高浓度的雄激素，即雄激素结合蛋白（androgen binding protein，ABP）。ABP是一种由睾丸支持细胞合成和分泌、与雄激素有高度亲和力的蛋白。

Androgen-binding protein (ABP) is a glycoprotein (beta-globulin) produced by the Sertoli cells in the seminiferous tubules of the testis that binds specifically to testosterone (T), dihydrotestosterone (DHT), and 17-beta-estradiol.

Because ABP binds to T and DHT, these hormones are made less lipophilic and become concentrated within the luminal fluid of the seminiferous tubules. The higher levels of these hormones enable spermatogenesis in the seminiferous tubules and sperm maturation in the epididymis.