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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The dual biotin group is essential to keep the oligonucleotide attached to the streptavidin-coated beads during thermal cycling 4,5. Primers 5 and 6 are unmodified oligonucleotides with the Tag1 ...