P3338
Prostate Specific Antigen from human semen
buffered aqueous solution
Synonym(s):
Cancer-associated PSA, PSA
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About This Item
Form:
buffered aqueous solution
Assay:
≥95% (SDS-GE)
Biological source:
human semen
Product Name
Prostate Specific Antigen from human semen, buffered aqueous solution
biological source
human semen
assay
≥95% (SDS-GE)
form
buffered aqueous solution
UniProt accession no.
storage temp.
2-8°C
Quality Level
Gene Information
human ... KLK3(354)
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Analysis Note
Highly purified
Application
Prostate Specific Antigen from human semen has been used:
- in microarray sandwich assay
- in the preparation of sandwich immunosensor
- as a target protein to test composite organic−inorganic nanoparticle (COIN) and Alexa conjugates in a plate-binding assay
Biochem/physiol Actions
Glycoprotein of the glandular kallikrein family
Prostate Specific Antigen (PSA), a glycoprotein of the glandular kallikrein family, is a serine protease with chymotrypsin-like enzymatic activity. Circulating PSA exists in free and protease inhibitor-bound forms. Studying the ratios of free to inhibitor-bound forms may prove valuable in the diagnosis of prostate cancer.
Prostate-specific antigen (PSA) is an androgen-regulated serine protease specifically produced by prostatic tissue and is secreted into the lumen. PSA in semen cleaves semenogelins present in the seminal coagulum. Total PSA levels are increased in serum of prostate cancer (PCa) patients. PSA functions as a potential biomarker for PCa. Serum protease inhibitors such as α1-antichymotrypsin (α1-ACT), α2-macroglobulin (α2-M), and other acute-phase proteins form irreversible complexes with circulating PSA and hinder proteolytic activity of PSA.
General description
Prostate specific antigen (PSA) is a 28.43 kDa single-chain glycoprotein containing 237 amino acids, encoded by the kallikrein gene mapped to human chromosome 19. It is specifically expressed by human prostate tissue and is one of the highly abundant proteolytic enzyme expressed in the seminal fluid.
Packaging
Package size based on protein content
Physical form
Solution in phosphate buffered saline, contains 0.05-0.1% sodium azide with 50% glycerol
Storage Class
12 - Non Combustible Liquids
wgk
WGK 2
flash_point_f
Not applicable
flash_point_c
Not applicable
Regulatory Information
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Microarray-based multiplexed scanometric immunoassay for protein cancer markers using gold nanoparticle probes.
Kim D
Analytical Chemistry, 81(21), 183-187 (2009)
Chun-Jen Hsiao et al.
Disease markers, 2016, 8915809-8915809 (2016-04-12)
Glycans of prostate-specific antigen (PSA) in prostate cancer were found to be different from that in benign disease. It is difficult to analyze heterogeneous PSA glycoforms in each individual specimen because of low protein abundance and the limitation of detection
Pt nanoparticle label-mediated deposition of Pt catalyst for ultrasensitive electrochemical immunosensors
Zhang J, et al.
Biosensors And Bioelectronics, 26(2), 418-423 (2010)
A M Zhou et al.
Clinical chemistry, 39(12), 2483-2491 (1993-12-01)
Prostate-specific antigen (PSA) in serum is primarily complexed with alpha 1-antichymotrypsin (alpha 1-ACT). However, 12-15% of prostate cancer (PCa) patients present with the predominant form being uncomplexed (free) PSA (Lilja et al., Clin Chem 1991;37:1618-24). We report that commercial immunoassays
Raman nanoparticle probes for antibody-based protein detection in tissues
Lutz B, et al.
The journal of histochemistry and cytochemistry : official journal of the Histochemistry Society, 56(4), 371-379 (2008)
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