Mitochondrial ADP/ATP carriers are inhibited by two natural compounds, atractyloside (ATR) or carboxy-atractyloside (CATR), which differ by one carboxylate group. The interactions of the inhibitors with the carrier were investigated by single-molecule force spectroscopy. Transmembrane alpha helices of the ATR-inhibited carrier displayed heterogeneous mechanical and kinetic properties. Whereas alpha helix H2 showed the most brittle mechanical properties and lowest kinetic stability, alpha helix H5 was mechanically the most flexible and possessed a kinetic stability 9 orders of magnitude greater than that of alpha helix H2. In contrast, CATR-binding substantially increased the kinetic stability of alpha helix H2 and tuned the mechanical flexibility of alpha helices H5 and H6. NMR spectroscopy confirmed that the additional carboxylate group of CATR binds to the sixth alpha helix, indicating that the enhanced stability of H2 is mediated via interactions between CATR and H6.
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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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| Evidence ID | Analyze ID | File | Description |
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