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I-309 Protein, Human, Recombinant (hFc) is expressed in HEK293 mammalian cells with hFc tag. The predicted molecular weight is 35 kDa and the accession number is P22362.

| Pack Size | Price | USA Stock | Global Stock | Quantity |
|---|---|---|---|---|
| 5 μg | $44 | - | In Stock | |
| 10 μg | $68 | - | In Stock | |
| 20 μg | $108 | - | In Stock | |
| 50 μg | $198 | - | In Stock | |
| 100 μg | $346 | - | In Stock | |
| 200 μg | $593 | 7-10 days | 7-10 days | |
| 500 μg | $1,200 | 7-10 days | 7-10 days |
| Biological Activity | Activity testing is in progress. It is theoretically active, but we cannot guarantee it. If you require protein activity, we recommend choosing the eukaryotic expression version first. |
| Description | I-309 Protein, Human, Recombinant (hFc) is expressed in HEK293 mammalian cells with hFc tag. The predicted molecular weight is 35 kDa and the accession number is P22362. |
| Species | Human |
| Expression System | HEK293 Cells |
| Tag | N-hFc |
| Accession Number | P22362 |
| Synonyms | TCA3,SISe,SCYA1,P500,I-309,chemokine (C-C motif) ligand 1 |
| Construction | A DNA sequence encoding the mature form of human CCL1 (NP_002972.1) (Lys 24-Lys 96) was fused with the Fc region of human IgG1 at the N-terminus. Predicted N terminal: Lys24 |
| Protein Purity | > 90 % as determined by SDS-PAGE ![]() |
| Molecular Weight | 35 kDa (predicted); 38-42 kDa (reducing condition, due to glycosylation) |
| Endotoxin | < 1.0 EU/μg of the protein as determined by the LAL method. |
| Formulation | Lyophilized from a solution filtered through a 0.22 μm filter, containing PBS, pH 7.4. Typically, a mixture containing 5% to 8% trehalose, mannitol, and 0.01% Tween 80 is incorporated as a protective agent before lyophilization. |
| Reconstitution | Reconstituted with sterile deionized water to 0.25 mg/mL. Reconstitution conditions may vary depending on the lot. |
| Stability & Storage | It is recommended to store recombinant proteins at -20°C to -80°C for future use. Lyophilized powders can be stably stored for over 12 months, while liquid products can be stored for 6-12 months at -80°C. For reconstituted protein solutions, the solution can be stored at -20°C to -80°C for at least 3 months. Please avoid multiple freeze-thaw cycles and store products in aliquots. |
| Shipping | In general, lyophilized powders are shipped with blue ice, while solutions are shipped with dry ice. |
| Research Background | CCL1 or chemokine (C-C motif) ligand 1, also known as I-309 or TCA-3, is a member of the chemokine (C-C motif) ligand family. The C-C chemokines have two cysteines nearby the amino terminus. There have been at least 27 distinct members of this subgroup reported for mammals, called C-C chemokine ligands (CCL)-1 to 28. I-309/CCL1/TCA-3 interacts with the G protein-linked transmembrane chemokine receptors CCR8 and induces biochemical events that may result in the control of chemotaxis, proliferation, apoptosis and adhesion. It has been demonstrated that I-309/CCL1/TCA-3 displays chemotactic activity for monocytes and other cell types such as NK cells and dendritic cells, but not for neutrophils. Furthermore, as the only known physiological ligand for CCR8, I-309/CCL1/TCA-3 was identified as a potent inhibitor of HIV-1 envelope-mediated cell-cell fusion and virus infection. I-309/CCL1/TCA-3 induces significant levels of LTC4 from elicited eosinophils. |
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