Fig. 1

Structures of the peptide LyeTx I derivatives modified with the chelating agent HYNIC. a HYNIC-LyeTx I derivative (M_w = 2966 g^.mol⁻¹) and b LyeTx I-K-HYNIC derivative (M_w = 3094 g^.mol⁻¹). –NH₂ represents the C-terminal carboxyamidation. H– represents the absence of N–terminal modification. M_w: molecular weight