Folding mechanism of the alpha-subunit of tryptophan synthase, an alpha/beta barrel protein: global analysis highlights the interconversion of multiple native, intermediate, and unfolded forms through parallel channels.


A variety of techniques have been used to investigate the urea-induced kinetic folding mechanism of the alpha-subunit of tryptophan synthase from Escherichia coli. A distinctive property of this 29 kDa alpha/beta barrel protein is the presence of two stable equilibrium intermediates, populated at approximately 3 and 5 M urea. The refolding process displays… (More)


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