The peroxisomal protein acyl-CoA oxidase (Pox1p) of Saccharomyces cerevisiae lacks either of the two well characterized peroxisomal targeting sequences known as PTS1 and PTS2. Here we demonstrate that peroxisomal import of Pox1p is nevertheless dependent on binding to Pex5p, the PTS1 import receptor. The interaction between Pex5p and Pox1p, however, involves novel contact sites in both proteins. The interaction region in Pex5p is located in a defined area of the amino-terminal part of the protein outside of the tetratricopeptide repeat domain involved in PTS1 recognition; the interaction site in Pox1p is located internally and not at the carboxyl terminus where a PTS1 is normally found. By making use of pex5 mutants that are either specifically disturbed in binding of PTS1 proteins or in binding of Pox1p, we demonstrate the existence of two independent, Pex5p-mediated import pathways into peroxisomes in yeast as follows: a classical PTS1 pathway and a novel, non-PTS1 pathway for Pox1p.
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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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