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SMTL ID : 1kl3.1
an engineered streptavidin with improved affinity for the strep-tag II peptide : SAm1-StrepII
Korndorfer, I.P. et al., Improved affinity of engineered streptavidin for the Strep-tag II peptide is due to a fixed open conformation of the lid-like loop at the binding site. Protein Sci. (2002)