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Recombinant Human Cystatin S/CST4 Protein (His Tag)
SKU: PKSH032327-50
Recombinant Human Cystatin S/CST4 Protein (His Tag)
| SKU # | PKSH032327 |
| Expression Host | HEK293 Cells |
Description
| Synonyms | CST4, Cystatin-4, Cystatin-S, Cystatin-SA-III, Salivary Acidic Protein 1 |
| Species | Human |
| Expression Host | HEK293 Cells |
| Sequence | Ser21-Ala141 |
| Accession | P01036 |
| Calculated Molecular Weight | 15.2 kDa |
| Observed Molecular Weight | 16 kDa |
| Tag | C-His |
| Bio-activity | Not validated for activity |
Properties
| Purity | > 95 % as determined by reducing SDS-PAGE. |
| Endotoxin | < 1.0 EU per μg of the protein as determined by the LAL method. |
| Storage | Generally, lyophilized proteins are stable for up to 12 months when stored at -20 to -80℃. Reconstituted protein solution can be stored at 4-8℃ for 2-7 days. Aliquots of reconstituted samples are stable at < -20℃ for 3 months. |
| Shipping | This product is provided as lyophilized powder which is shipped with ice packs. |
| Formulation | Lyophilized from a 0.2 μm filtered solution of 20mM MES, 150mM NaCl, pH 5.5. Normally 5% - 8% trehalose, mannitol and 0.01% Tween 80 are added as protectants before lyophilization. Please refer to the specific buffer information in the printed manual. |
| Reconstitution | Please refer to the printed manual for detailed information. |
Background
Cystatin-S, also called Cystatin-SA-III or Salivary acidic protein, is usually expressed in submandibular and sublingual saliva but not in parotid saliva(at protein level). This protein, which is phosphorylated at both its N- and C-terminal regions, belongs to the cystatin family. Cystatin-S can function as an inhibitor to papain or ficin, it partially inhibits stem bromelain and bovine cathepsin C.