Figure 4.
(A) Representation of the HER-2 affibodies (PDB code: 2B89) with chemically modified Cys positions [Cys42, Cys46] via stapling (10a) and alkylation (10); (B) CD spectra of 10 and 10a, and the corresponding temperature-dependent melting curves measured from the CD spectra at 222 nm (inset); (C) Biacore binding sensograms of 10, 10a with immobilized HER-2 extra-celluar binding region (adsorption/desorption time - 300 sec).