Anti-Prostate Specific Antigen/KLK3 Antibody Picoband® Fluoro550 Conjugated

Prostate-specific antigen (PSA), also known as gamma-seminoprotein or kallikrein-3 (KLK3), is a glycoprotein enzyme encoded in humans by the KLK3 gene. KLK3 is a member of the kallikrein-related peptidase family and is secreted by the epithelial cells of the prostate gland. This gene is mapped to 19q13.33. KLK3 is present in small quantities in the serum of men with healthy prostates, but is often elevated in the presence of prostate cancer or other prostate disorders. KLK3 is produced for the ejaculate where it liquifies the semen in the seminal coagulum and allows sperm to swim freely. It is also believed to be instrumental in dissolving the cervical mucous cap, allowing the entry of sperm. It is not a unique indicator of prostate cancer, but may also detect prostatitis or benign prostatic hyperplasia.

Isoform 1 and isoform 2 are detected in spermatogonia and Leydig cells. Isoform 3 is detected in round spermatids, elongating spermatids and spermatozoa (at protein level) . Widely expressed. Detected in the hematopoietic system, the gastrointestinal system, in melanocytes and in germ cells. .

Cancer, Cell Adhesion Proteins, Cell Type Markers, Cytoskeleton/ECM, ECM Enzymes, Extracellular Matrix, Neuroscience, Signal Transduction, Tags & Cell Markers, Tumor Antigens, Tumor Associated, Tumor Biomarkers, Tumor Immunology, Tumor-Associated Antigens

1. Balk SP, Ko YJ, Bubley GJ (January 2003) . Biology of prostate-specific antigen. J. Clin. Oncol. 21 (2) : 383–91. 2. Catalona, W. J.; Richie, J. P.; Ahmann, F. R.; Hudson, M. A.; Scardino, P. T.; Flanigan, R. C.; Dekernion, J. B.; Ratliff, T. L.; Kavoussi, L. R.; Dalkin, B. L. (1994) . Comparison of digital rectal examination and serum prostate specific antigen in the early detection of prostate cancer: Results of a multicenter clinical trial of 6,630 men. The Journal of urology 151 (5) : 1283–1290. 3. Lilja H (November 2003) . Biology of prostate-specific antigen. Urology 62 (5 Suppl 1) : 27–33. doi:10.1016/S0090-4295 (03) 00775-1.