Characterizing Protein Conformational Transitions of Na,K-ATPase with Antibodies by Fluorescence Spectroscopy

Abstract

Stationary and time-resolved fluorescence of FITC–Na,K-ATPase is investigated as a function of pH in the presence of different ligands, cations, and the monoclonal anti-FITC antibody 4-4-20. The binding of K+ and of the antibody leads to the same decreased fluorescence intensity level. Antibody binding is observed only under conditions where the enzyme… (More)
DOI: 10.1023/A:1022542208027

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