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Description
Strep Tag II is a small tag with 8 amino acids (WSHPQFEK), which is only about 1.06 kDa due to its small size and does not affect the structure and function of the fused protein. These mild purification parameters can maintain the biological activity of the protein and yield over 99% purity through only one step of extraction. Among numerous affinity tags, although Strep-tag II appeared later than Flag, c-Myc, and His tags, it has been widely used due to its high affinity, high single-step purification purity (better than His tags), mild purification conditions, and fusion of both ends of the protein.
Specifications
| Parameter | Specification |
|---|---|
| Substrate | Highly cross-linked 4% agarose |
| Average Particle Size | 0 |
| Particle Size | 45 μm~165 μm |
| Protein Binding Ability | ≈4 mg Twin Strep-tag II protein/mL filler |
| Maximum Flow Rate | 300 cm/h |
| Pressurization | 0.3 MPa, 3 bar |
| Storage Buffer | 1X PBS solution containing 20% ethanol |
| Component | 1 mL/5 mL |
| Storage | 2~8°C, do not freeze |
Features
- Strep-Tag II–specific purification for recombinant protein workflows.
- Broad expression-system compatibility, including rod-shaped viruses, mammalian cells, and yeast.
- Cold-chain stability for routine lab handling (2–8 °C storage; avoid freezing).
Applications
- Affinity purification of Strep-Tag II–labeled recombinant proteins from diverse expression sources (e.g., rod-shaped viruses, mammalian cells, yeast).
- Preparation of purified tagged proteins for downstream functional assays, interaction studies, or analytical characterization (typical downstream uses for Strep-tag purification workflows).
When can I expect my order to ship?
Most orders are filled and shipped within 2-3 business days from the time they are received.
Our standard shipping usually take 2-5 days.
We also provide express shippping for time-sensitive deliveries.
Email contact@biofargo.com if you have any requirements.

