The denaturation of triose phosphate isomerase (TIM) from Saccharomyces cerevisiae by guanidine hydrochlorids at pH 7.2 has been monitored by NMR spectroscopy in conjunction with optical spectroscopy. In the absence of denaturant, the hydrodynamic radius of 29.6(+/-0.25) A and the substantial chemical shift dispersion evident in the NMR spectrum are consistent with the highly structured dimeric native state of the protein. On the addition of 2. 2 M guanidine hydrochloride the effective hydrod...Expand abstract
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A compact monomeric intermediate identified by NMR in the denaturation of dimeric triose phosphate isomerase.
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