Most inner membrane proteins of mitochondria are synthesized in the cytosol and reach the inner membrane using one of two alternative sorting pathways. On the stop transfer route, proteins are arrested during import at the level of the inner membrane. The conservative sorting pathway involves translocation through the inner membrane and insertion from the matrix. It is unclear how the translocase of the inner membrane 23 protein translocation machinery differentiates between the two classes of proteins. Here we show that proline residues in hydrophobic stretches strongly disfavor the translocation arrest of transmembrane domains (TMDs) and favor the transfer of preproteins to the matrix. We propose that proline residues, together with the hydrophobicity of the TMD and the presence of charged residues COOH-terminally flanking the TMD, are determinants of the intramitochondrial sorting of inner membrane proteins.
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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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