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Twin-Strep-tag® Capture Kit

SPR analysis with Strep-Tactin®XT and Twin-Strep-tag®

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IBA Lifesciences

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Surface plasmon resonance (SPR) is a commonly used technology to study biomolecular interactions. It requires an efficient binding of the ligand to the immobilized capturing molecule.The Twin-Strep-tag® Capture Kit is intended for reversible high affinity capturing of Twin-Strep-tag® fusion proteins on carboxyl-derivatized sensor chips using Biacore SPR systems. The Kit consists of Strep-Tactin®XT as capture molecule, a Control protein, Immobilization- and Regeneration buffer.

Key benefits of Strep-Tactin®XT and Twin-Strep-tag® for SPR experiments:
- Ligand is not inactivated or influenced by immobilization procedure
- No chemical modification of the ligand required
- High affinity enables measurements over a long time (high affinity in low pM range; T1/2 = 13 h)
- Chip can be regenerated easily by an established procedure
- Ligands can be captured directly from complex samples

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