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Structural changes of PGK detected by tryptophan fluorescence. Structure formation of acid unfolded PGK recorded by tryptophan fluorescence after a quick dilution by mixing. Monoexponential fit of the observed kinetics is also indicated. Residuals obtained as the difference between the measured and fitted curves are also shown. Buffer conditions after mixing: 3.6 μM PGK, 9.1 mM Na-citrate, 9.1 mM Na-phosphate, and 182 mM NaCl.
