Unfolding of multimeric proteins in presence of denaturants. A case study of helianthinin from Helianthus annuus L.

Abstract

Helianthinin (11S), a multisubunit protein from Sunflower Seeds (Helianthus annuus L.) dissociates to its monomer (2S) through a trimeric (7S) intermediate as a function of guanidine hydrochloride (GuHCl) and guanidine thiocyanate (GuHSCN) concentration. Measurements of viscosity, velocity sedimentation patterns and spectroscopic parameters of the protein… (More)

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