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B7-2 homodimer interface peptides pB2-4 and pB2-6 bind TSST-1 and SMEZ. (A–D) Representative SPR responses for binding of TSST-1 in five twofold increments from 0.0625 μM and of SMEZ in four twofold increments from 0.0625 μM to immobilized pB2-4 or pB2-6, using the chips of Fig. 5 A and B. Graphical fits to the binding curves are presented in red; kinetic parameters show the specificity of these interactions (Table S1).
