Reengineered streptavidin mutants bind biotin-4-fluorescein with extremely tight yet reversible binding affinity. The terrifically tight noncovalent interaction between biotin and streptavidin has ...

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TruActiv ID kits are composed of biotinylated-Chemibeads (615 or 545) and Streptavidin Sensibeads 680. Adding compounds to a ...