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Key Properties
−| Source | Escherichia coli |
|---|---|
| Expression System | Escherichia coli |
| Biological Activity | Fully biologically active when compared to standard. The ED50 as determined by a chemotaxis bioassay using human MCF-7 cells is less than 10 ng/ml, corresponding to a specific activity of > 1.0 x105 IU/mg. |
| Molecular Weight | Approximately 12.0 kDa, a single non-glycosylated polypeptide chain containing 106 amino acids, which includes a 40-amino acid trefoil motif containing three conserved intramolecular disulfide bonds. |
| Protein Sequence | EKPSPCQCSR LSPHNRTNCG FPGITSDQCF DNGCCFDSSV TGVPWCFHPL PKQESDQCVM EVSDRRNCGY PGISPEECAS RKCCFSNFIF EVPWCFFPKS VEDCHY |
| Purity | > 97 % by SDS-PAGE and HPLC analyses. |
| Endotoxins | Less than 1 EU/ug of rHuTFF2 as determined by LAL method. |
Storage & Handling
−| 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.- 3 months, -20 to -70 °C under sterile conditions after reconstitution. |
|---|---|
| Form/Appearance | Lyophilized from a 0.2 μm filtered concentrated solution in 20 mM PB, pH 7.4, 130 mM NaCl. |
| Expiration Date | 6 months from date of receipt. |
| Disclaimer | For research use only |
Alternative Names
−Spasmolysin, Spasmolytic polypeptide, SP
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Recombinant Human Trefoil Factor 2 (orb1905950)
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