Buffer BXT is a Strep-Tactin®XT Elution Buffer with Biotin. It contains a Biotin concentration for competitive displacement of purified recombinant Strep-tag®II or Twin-Strep-tag® fusion proteins from immobilized Strep-Tactin®XT.
Buffer BXT is also recommended for efficient elution in combination with Strep-Tactin®XT and MagStrep ?type3? XT beads (2-4090-002).