More specifically, streptavidin chromatography was used to affinity-purify streptavidin-binding peptide-tagged wild-type AR (SBP-AR) from the cytosolic compartment in the unliganded (i.e. androgen-depleted) and liganded (i.e. androgen-stimulated) states in LNCaP prostate tumor cells. Here, AR is linked to prostate neoplasm.