|Source:||Prostate-specific antigen (PSA) was purified from human seminal plasma by ion-exchange chromatography and gel filtration. The purified antigen was dialyzed against d.H2O and lyophilized.|
|Description:||Prostate-specific antigen (PSA) is a glycoprotein of approx. 30 kDa found mainly in prostatic tissue and seminal fluid; it is produced by normal prostate cells. The molecule consists of approximately 92% protein and 8% carbohydrate. This enzyme participates in the dissolution of the seminal fluid coagulum and plays an important role in fertility. The highest amounts of PSA are found in the seminal fluid; some PSA escapes the prostate and can be found in the serum. This serum component has been used to track the response to therapy in men with prostate cancer.|
|Purity:||> 95% (by SDS-PAGE)|
|Purification:||Ion-exchange chromatography and gel filtration. The purified protein was dialyzed against deionized water and lyophilized.|
|Activity:||The purified protein is suitable as positive control material. No biological assay has been performed.|
|Storage / Stability:||Store lyophilized product in freezer (-20 °C to -80 °C). The expiration date of unopened product vial is indicated on the vial label. After reconstitution prepare suitable aliquots. Reconstituted product is stable for at least 6 months when stored in freezer (-20 °C to -80 °C). Avoid freeze/thaw cycles.|
|Expiration:||See vial label|
|Lot Number:||See vial label|
*Zhang WM, Leinonen J, Kalkkinen N, Dowell B, Stenman UH: Purification and characterization of different molecular forms of prostate-specific antigen in human seminal fluid. Clin Chem. 1995 Nov;41(11):1567-73.
For laboratory research only, not for drug, diagnostic or other use.
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