| Description : |
The human tissue kallikrein (KLK) gene family contains 15 members that play important roles in cancer. Kallikrein-3, called prostate specific antigen (PSA), is a glycoprotein enzyme encoded in humans by the KLK3 gene. PSA is secreted by the epithelial cells of the prostate gland, hydrolyzes semenogelin-1 thus leading to the liquefaction of the seminal coagulum. PSA is an established tumor marker that aids in the diagnosis, staging, and follow up of prostate cancer. |
| Source : |
E.coli |
| Species : |
Human |
| Form : |
Lyophilized from a 0.2 μm filtered concentrated solution in 20mM Tris-HCl, pH 8.0, 150mM NaCl, 3% trehalose. |
| Molecular Mass : |
Approximately 26.1 kDa, a single non-glycosylated polypeptide chain containing 237 amino acids. |
| Protein length : |
237 |
| AA Sequence : |
IVGGWECEKHSQPWQVLVASRGRAV CGGVLVHPQWVLTAAHCIRNKSVIL LGRHSLFHPEDTGQVFQVSHSFPHP LYDMSLLKNRFLRPGDDSSHDLMLL RLSEPAELTDAVKVMDLPTQEPALG TTCYASGWGSIEPEEFLTPKKLQCV DLHVISNDVCAQVHPQKVTKFMLCA GRWTGGKSTCSGDSGGPLVCNGVLQ GITSWGSEPCALPERPSLYTKVVHY RKWIKDTIVANP |
| Endotoxin : |
Less than 0.1 EU/μg of rHuPSA/Kallikrein-3 as determined by LAL method. |
| Purity : |
>95% by SDS-PAGE and HPLC analyses. |
| Storage : |
Use a manual defrost freezer and avoid repeated freeze-thaw cycles. 12 months from date of receipt, -20 to -70 centigrade as supplied. 1 month, 2 to 8 centigrade under sterile conditions after reconstitution. 3 months, -20 to -70 centigrade under sterile conditions after reconstitution. |
| Reconstitution : |
We recommend that this vial be briefly centrifuged prior to opening to bring the contents to the bottom. Reconstitute in sterile distilled water or aqueous buffer containing 0.1 % BSA to a concentration of 0.1-1.0 mg/ml. Stock solutions should be apportioned into working aliquots and stored at ≤ -20 centigrade. Further dilutions should be made in appropriate buffered solutions. |
