Electrochemical Analysis of Polyamino Acids and Proteins
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1-Anilino-8-naphthalene sulfonate anion-protein binding depends primarily on ion pair formation.
The ANS- (1-anilino-8-naphthalene sulfonate) anion is strongly, dominantly bound to cationic groups of water-soluble proteins and polyamino acids through ion pair formation. This mode of ANS- binding, broad and pH dependent, is expressed by the quite rigorous stoichiometry of ANS- bound with respect to the available summed number of H+ titrated lysine, histidine, and arginine groups. By titrati...
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