2-Phosphoglycolate (PGA), a strong competitive inhibitor of the dimeric enzyme triosephosphate isomerase (TIM), brings about a large decrease in the unfolding rate constant of the protein. The data set of rate constants versus ligand concentration may be equally well explained by regarding either a monomeric or a dimeric transition state (TS). However, if the thermodynamics for binding of PGA to native TIM is taken into account, it becomes clear that a dimeric TS is the right assumption. Furthermore, by studying the effect of the ligand on the second-order refolding reaction, we found results indicating similar PGA-binding affinities to be present in the transition states for the rate-limiting steps of the forward and backward reactions. Most likely, therefore, both TS resemble each other in respect to the active site architecture. It should be mentioned, however, that our data do not rule out the possible occurrence of an unstable, (partially) folded monomeric intermediate, which would rapidly interconvert with the unfolded monomer.
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Evidence ID | Analyze ID | Gene/Complex | Systematic Name/Complex Accession | Qualifier | Gene Ontology Term ID | Gene Ontology Term | Aspect | Annotation Extension | Evidence | Method | Source | Assigned On | Reference |
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Evidence ID | Analyze ID | Gene | Gene Systematic Name | Phenotype | Experiment Type | Experiment Type Category | Mutant Information | Strain Background | Chemical | Details | Reference |
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Evidence ID | Analyze ID | Gene | Gene Systematic Name | Disease Ontology Term | Disease Ontology Term ID | Qualifier | Evidence | Method | Source | Assigned On | Reference |
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Evidence ID | Analyze ID | Regulator | Regulator Systematic Name | Target | Target Systematic Name | Direction | Regulation of | Happens During | Regulator Type | Direction | Regulation Of | Happens During | Method | Evidence | Strain Background | Reference |
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Site | Modification | Modifier | Source | Reference |
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Evidence ID | Analyze ID | Interactor | Interactor Systematic Name | Interactor | Interactor Systematic Name | Allele | Assay | Annotation | Action | Phenotype | SGA score | P-value | Source | Reference | Note |
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Evidence ID | Analyze ID | Interactor | Interactor Systematic Name | Interactor | Interactor Systematic Name | Assay | Annotation | Action | Modification | Source | Reference | Note |
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Complement ID | Locus ID | Gene | Species | Gene ID | Strain background | Direction | Details | Source | Reference |
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Evidence ID | Analyze ID | Dataset | Description | Keywords | Number of Conditions | Reference |
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