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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 cell proliferation assay using human TT medullary thyroid cancer cells is less than 10 ng/ml, corresponding to a specific activity of > 1.0 x105 IU/mg. |
| Endotoxins | Less than 0.1 EU/ug of rHuPersephin as determined by LAL method. |
| MW | Approximately 20.5 kDa, a disulfide-linked homodimer of two 96 amino acid polypeptide chains. |
| Purity | > 97 % by SDS-PAGE and HPLC analyses. |
| Protein Sequence | ALSGPCQLWS LTLSVAELGL GYASEEKVIF RYCAGSCPRG ARTQHGLALA RLQGQGRAHG GPCCRPTRYT DVAFLDDRHR WQRLPQLSAA ACGCGG |
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 PBS, pH 7.4. |
| Expiration Date | 6 months from date of receipt. |
| Disclaimer | For research use only |
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