Human Kallikrein 3/PSA Biotinylated Antibody

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Product Details
Citations (3)
Supplemental Products

Human Kallikrein 3/PSA Biotinylated Antibody Summary

Species Reactivity
Detects human KLK3 in ELISAs and Western blots. In sandwich immunoassays, less than 0.5% cross-reactivity with recombinant human (rh) KLK‑1 and rhKLK‑2 is observed.
Polyclonal Goat IgG
Antigen Affinity-purified
Mouse myeloma cell line NS0-derived recombinant human Kallikrein 3 (R&D Systems, Catalog # 1344-SE)
Accession # P07288
Lyophilized from a 0.2 μm filtered solution in PBS with BSA as a carrier protein.


Recommended Concentration
Western Blot
0.1 µg/mL
Recombinant Human Kallikrein 3/PSA (Catalog # 1344-SE)

Human Kallikrein 3/PSA Sandwich Immunoassay

Recommended Concentration
ELISA Detection (Matched Antibody Pair)
0.1-0.4 µg/mL 

Use in combination with:

Capture Reagent: Human Kallikrein 3/PSA Antibody (Catalog # MAB13442)

Standard: Recombinant Human Kallikrein 3/PSA Protein, CF (Catalog # 1344-SE)

Please Note: Optimal dilutions should be determined by each laboratory for each application. General Protocols are available in the Technical Information section on our website.

Reconstitution Calculator

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Preparation and Storage

Reconstitute at 0.2 mg/mL in sterile PBS.
The product is shipped at ambient temperature. Upon receipt, store it immediately at the temperature recommended below.
Stability & Storage
Use a manual defrost freezer and avoid repeated freeze-thaw cycles.
  • 12 months from date of receipt, -20 to -70 °C as supplied.
  • 1 month, 2 to 8 °C under sterile conditions after reconstitution.
  • 6 months, -20 to -70 °C under sterile conditions after reconstitution.

Background: Kallikrein 3/PSA

Kallikrein 3, commonly known as prostate specific antigen (PSA), is a serine protease of the human tissue Kallikrein gene family (1). PSA is synthesized in the ductal and acinar epithelium of the prostate gland and secreted into the seminal plasma in high concentrations (0.5 - 2 g/L) (2). A small portion of PSA “leaks” into the systemic circulation, the levels of which increase significantly (30-fold) from prostate cancer tissue than normal prostate tissue (3). PSA has become a well established tumor marker that aids the diagnosis, staging, and follow up of prostate cancer.

The deduced amino acid sequence of human PSA consists of a signal peptide, a short pro region and a mature/active enzyme. The pro-enzyme is activated, possibly by active Kallikreins 2, 4 or 15 in vivo (4). rhPSA is activated by thermolysin, a zinc protease. The active PSA cleaves several tyrosyl peptide bonds in semenogelins I and II, which are the major gel-forming proteins produced by the seminal vesicles (5). Several inhibitors including serpin A3/ alpha 1-antichymotrypsin (ACT) and alpha 2-macroglobulin are known to form complexes with PSA.

  1. Yousef, G.M. and E.P. Diamandis (2001) Endocrine Rev. 22:184.
  2. Ward, A.M. et al. (2001) Ann. Clin. Biochem. 38:633.
  3. Jain, S. et al. (2002) Postgrad. Med. J. 78:646.
  4. LiLja H. (2003) Urology 62:27.
  5. Takayama, T.K. et al. (1997) J. Biol. Chem. 272:21582.
Entrez Gene IDs
354 (Human)
Alternate Names
APS seminin; EC 3.4.21; EC; Gamma-seminoprotein; hK3; Kallikrein 3; kallikrein 3, (prostate specific antigen); Kallikrein-3; kallikrein-related peptidase 3; KLK2A1; KLK3; P-30 antigen; prostate specific antigen; prostate-specific antigen; PSA semenogelase; PSA; Semenogelase; Seminin

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Citations for Human Kallikrein 3/PSA Biotinylated Antibody

R&D Systems personnel manually curate a database that contains references using R&D Systems products. The data collected includes not only links to publications in PubMed, but also provides information about sample types, species, and experimental conditions.

3 Citations: Showing 1 - 3
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  1. Bioconjugates of photon-upconversion nanoparticles for cancer biomarker detection and imaging
    Authors: A Hlavá?ek, Z Farka, MJ Mickert, U Kostiv, JC Brandmeier, D Horák, P Skládal, F Foret, HH Gorris
    Nature Protocols, 2022-02-18;0(0):.
    Species: Human
    Sample Types: Cell Lysates
    Applications: ULISA
  2. Protein detection in blood with single-molecule imaging
    Authors: CP Mao, SC Wang, YP Su, SH Tseng, L He, AA Wu, RBS Roden, J Xiao, CF Hung
    Science Advances, 2021-08-11;7(33):.
    Species: Human
    Sample Types: Plasma
    Applications: ELISA Detection
  3. Development and validation of sandwich ELISA microarrays with minimal assay interference.
    Authors: Gonzalez RM, Seurynck-Servoss SL, Crowley SA
    J. Proteome Res., 2008-04-19;7(6):2406-14.
    Species: Human
    Sample Types: Serum
    Applications: ELISA Microarray Development


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