Title : Reversible unfolding of bovine beta-lactoglobulin mutants without a free thiol group.

Pub. Date : 2003 Nov 21

PMID : 12963719






4 Functional Relationships(s)
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1 Kinetics of the formation of the irreversibly unfolded species of wild-type beta-lg in 8 M urea at pH 7.0 indicated that, first, an intramolecular thiol-disulfide exchange occurs to produce a mixture of species with non-native disulfide bonds followed by the intermolecular thiol-disulfide exchange producing the oligomers. Disulfides beta-lactoglobulin Bos taurus
2 Kinetics of the formation of the irreversibly unfolded species of wild-type beta-lg in 8 M urea at pH 7.0 indicated that, first, an intramolecular thiol-disulfide exchange occurs to produce a mixture of species with non-native disulfide bonds followed by the intermolecular thiol-disulfide exchange producing the oligomers. Disulfides beta-lactoglobulin Bos taurus
3 Kinetics of the formation of the irreversibly unfolded species of wild-type beta-lg in 8 M urea at pH 7.0 indicated that, first, an intramolecular thiol-disulfide exchange occurs to produce a mixture of species with non-native disulfide bonds followed by the intermolecular thiol-disulfide exchange producing the oligomers. Disulfides beta-lactoglobulin Bos taurus
4 These results indicate that intramolecular and intermolecular thiol-disulfide exchange reactions cause the low reversibility of wild-type beta-lg especially at neutral pH and that the mutation of Cys-121 improves the reversibility, enabling us to study the folding of beta-lg more exactly under various conditions. Disulfides beta-lactoglobulin Bos taurus