Prostein is a novel prostate-specific protein expressed in normal and malignant prostate tissues. This protein appears tobe a type IIIa plasma membrane protein with a cleavable signal peptide and 11 transmembrane-spanning regions. Prostein expression is androgen responsive since treatment of LNCaP cells with androgen up-regulates prostein message and protein expression levels. Thus, prostein is a prostate-specific marker whose detection and quantitationmay be useful in diagnosing and monitoring prostate cancer.
PBS containing 0.02% sodium azide.
Aliquot and store at -20°C. Avoid multiple freeze-thaw cycles.