| 背景描述 | CTLA-4 is a protein belonging to the immunoglobulin superfamily and the CD28 receptor family. It interacts with CD80 (B7-1) and CD86 (B7-2) to transmit inhibitory signals to T cells, in contrast to CD28, which sends stimulatory signals. This receptor is also found within regulatory T cells, where it plays a vital role in their functions. CTLA-4 is a key regulator of T cell activation, making it an appealing candidate for autoimmune disease therapy and cancer immunotherapy. Recent evidence further highlights its importance in the function and balance of regulatory T cells (Treg). |
| 别称 | CD152 |
| 蛋白编码 | NP_001003106.1 |
| 分子量 | The protein has a calculated MW of 14 kDa. The protein migrates as 18-23 kDa uder reducing condition (SDS-PAGE analysis). |
| 表达系统 | HEK293 cell |
| 纯度 | >90% as determined by SDS-PAGE analysis. |
| 生物活性 | Testing in process |
| 内毒素检测 | <0.1 EU per 1 μg of the protein by the LAL method. |
| 蛋白序列 | A DNA sequence encoding Canine CTLA-4 Protein (#NP_001003106.1)(Lys36-Asp161) was expressed with polyhistidine tag at the C-terminus. |
| 蛋白标签 | His Tag (C-term) |
| 产品形式 | The protein was lyophilized from a 0.2 µm filtered solution containing 1X PBS, pH 7.4. If you have any concerns or special requirements, please confirm with us. |
1. Before opening, centrifuge at 3000 rpm for 5 mins.
2. Initial Reconstitution
· Reconstitute the Lyophilized Protein in sterile H₂O to a concentration of 100-200 μg/mL.
· Then, incubate it at room temperature for at least 20 mins to ensure sufficient dissolution.
Do Not Vortex! Vigorous shaking may impair the biological activity of the protein.
· Store at 2°C to 8°C for up to 1 week.
3. Extended Storage
· After the initial reconstitution, further dilute the reconstituted protein in a buffer containing a carrier protein or stabilizer (e.g., 0.1% BSA, 10% FBS, 5% HSA, or 5% trehalose solution). The final concentration is not less than 10 μg/ml.
· Prepare aliquots (≥20 μl).
· Store at -20°C or -80°C for 3 to 6 months.
Avoid repeated freeze-thaw cycles.
| 储存 | Lyophilized Protein: Store at -20°C for 1 year. Initial Reconstitution: Store at 2°C to 8°C for up to 1 week. Extended Storage: Store at -20°C or -80°C for 3 to 6 months with a carrier protein or stabilizer. |
| 运输 | Blue Ice |
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| SDS-PAGE analysis of recombinant canine CTLA-4 |
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