Strep-Tactin XT Resins

  • Higher Strep-tag II binding affinity than Strep-Tactin
  • Great for High-throughput screening, Batch purification, Denaturating conditions
  • Higher protein yield
  • Binding capacity up to 15 mg/mL
  • Wide pH range (6-10) for protein binding
  • More stable resin compared to Strep-Tactin

20% off until December 17th, 2019

Enjoy 20% off during our year-end offer on Strep-Tactin XT resins until Dec. 17th, 2019!

* Offer valid for qualifying orders received no later than Dec 17th, 2019. Cannot be combined with other discounts or promotions. Not applicable on starter kit and 4 mL volumes. Mention promo code SPOT7 on your order.

Strep-Tactin XT offers higher affinity

The Strep-Tactin XT has a higher binding affinity to Strep-tag II and is more stable compared to the original Strep-Tactin. This enables new applications such as high-throughput screening, batch purification and denaturing purification.


Enhanced binding of Twin-Strep-tag-mCherry to Strep-Tactin XT compared to Strep-Tactin. A significant loss of mCherry occurred during the washing steps if Strep-Tactin is used for purification. In the case of Strep-Tactin®XT no target protein is lost during the purification procedure. Western blot analysis revealed that remaining impurities were degradation products of mCherry.

Higher yield

Strep-Tactin XT also provides higher protein yields compared to Strep-Tactin®. Together with an optimized elution profile this gives you more concentrated target protein. At the same time Strep-Tactin XT still has all the benefits of Strep-Tactin for protein purification:  very high purity (>95%), physiological buffer conditions and mild elution.

Strep-Tactin vs Strep-Tactin XT Strep-Tactin vs Strep-Tactin XT

Ordering information

Westburg offers this product in The Netherlands, Belgium, Finland, Luxembourg, Denmark, Sweden, Norway, Iceland,
If you are not located in these countries please visit the IBA website to find your local distributor.
Cat no. Description
IB 2-4010-002 Strep-Tactin XT Superflow (50%) 4 ml
IB 2-4010-010 Strep-Tactin XT Superflow (50%) 20 ml
IB 2-4010-025 Strep-Tactin XT Superflow (50%) 50 ml
IB 2-4030-002 Strep-Tactin XT Superflow High Capacity (50%) 4 ml
IB 2-4030-010 Strep-Tactin XT Superflow High Capacity (50%) 20 ml
IB 2-4998-000 Strep-Tactin XT Starter Kit