Catalogue Number: 2-0204-050-IBA
Manufacturer: | IBA GmbH |
Shelf Life: | 12 Months |
Type: | Avidin/Streptavidin Biotin Products |
Alias: | Avidin |
Shipping Condition: | RT |
Storage Condition: | 2-8°C |
Unit(s): | 50 mg |
Application: | AP |
Description: Avidin is a tetrameric biotin binding protein (KD ~1 x 10-14) extracted from egg white. It prevents biotin and biotinylated proteins from binding to Strep-Tactin® or Strep-Tactin®XT, whereas binding of the Twin-Strep-tag® and Strep-tag®II is not influenced. Biotin and/or biotinylated proteins can potentially reduce the binding capacity of Strep-Tactin® as well as Strep-Tactin®XT and are present in cell lysates and cell culture media, especially from mammalian or insect cells. Thus, if Twin-Strep-tag® and Strep-tag®II fusion proteins from biotin-containing extracts or media are intended to be purified via Strep-Tactin® or Strep-Tactin®XT affinity chromatography, biotin has to be masked by addition of avidin prior to application onto the resin.
Efficient blocking of biotin and biotinlyated proteins