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The structural characteristics of exclusive equilibrium molten globule-like intermediate formed during peanut lectin unfolding in urea and guanidine hydrochloride (GdnHCl) have been investigated by size-exclusion chromatography, circular dichroism, fluorescence, phosphorescence, and chemical modification. The elution behavior and 8-anilino-1-naphthalenesulfonate binding indicate a less compact tertiary...
Pea lectin (PSL) is a dimeric protein in which each subunit comprises two intertwined, post-translationally processed polypeptide chains -a long β-fragment and a short α-fragment. Using guanidine hydrochloride-induced denaturation, we have investigated and characterized the species obtained in the unfolding equilibrium of PSL by steady-state and time-resolved fluorescence, phosphorescence, and selective...
We have investigated the organization and dynamics of tryptophan residues in tetrameric, monomeric and unfolded states of soybean agglutinin (SBA) by selective chemical modification, steady-state and time-resolved fluorescence, and phosphorescence. Oxidation with N-bromosuccinimide (NBS) modifies two tryptophans (Trp 60 and Trp 132) in tetramer, four (Trp 8, Trp 203 and previous two) in monomer, and...
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