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pH dependence of iM folding. Row (A) CD spectra for C6T when no polyamines are present at varying pH. In saturating amounts of polyamines: row (B) in 10 mM putrescine; row (C) in 1 mM spermidine; and row (D) in 0.05 mM spermine. Final fractions other than 1.0 are due to fitting, where the final fraction was allowed to be ∼1.0.
