Article
Protein stabilization by specific binding of guanidinium to a functional arginine-binding surface on an SH3 domain.
Protein science : a publication of the Protein Society - 1 Jan 2006
Zarrine-Afsar Arash, Mittermaier Anthony, Kay Lewis E, Davidson Alan R
Abstract excerpt
Guanidinium hydrochloride (GuHCl) at low concentrations significantly stabilizes the Fyn SH3 domain. In this work, we have demonstrated that this stabilizing effect is manifested through a dramatic (five- to sixfold) decrease in the unfolding rate of the domain with the folding rate being affected minimally. This behavior contrasts to the effect of NaCl, which stabilizes this domain by accelerating the folding...
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