Abstract
Disulfide bonds play a critical role in the maintenance of the native conformation of proteins under thermodynamic control. In general, disulfide bond formation is associated with protein folding, and this restricts the formation of folding intermediates such as misbridged disulfide isomers or kinetically trapped conformations, which provide important information related to how proteins fold into their native conformation. Therefore, numerous studies have focused on the structural analysis of folding intermediates in vitro. However, isolating or trapping folding intermediates, as well as the entire proteins, including mutant proteins, is not an easy task. Several chemical methods have recently been developed for examining peptide and protein folding and for producing, e.g., intact, post-translationally modified, or kinetically trapped proteins, or proteins with misbridged disulfide bonds. This overview introduces chemical methods for regulating the formation of disulfide bonds of peptides and proteins in the context of the thermodynamic and kinetic control of peptide and protein folding.
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