A human aryl hydrocarbon (Ah) receptor signalling pathway was constructed in yeast and used to identify regulatory proteins that may be related to those present in mammalian cells. The sequence similarity of human hepatitis B protein X-associated protein 2 (XAP2) protein to yeast Cpr7 and Cns1 proteins suggested that these proteins might be involved in Ah receptor signalling in this model system. Ah receptor signalling from a lacZ reporter gene was reduced by approximately 60% in cells that lacked Cpr7. In vitro interaction experiments indicated that a Cpr7-GST fusion protein and Ah receptor formed a complex. Expression of Cpr7, Cns1 and the isolated tetratricopeptide repeat (TPR) region of Cpr7 from plasmids restored Ah receptor signalling function in the Cpr7-deficient strain. Thus, Cpr7 and Cns1 proteins facilitate the signalling of human Ah receptor expressed in yeast, perhaps in the same manner as the TPR-containing XAP2 protein and related chaperone proteins in mammalian cells.
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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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