The development of mutant microorganisms lacking J domain proteins (JDPs; formerly called Hsp40s) has enabled the development of complementation assays for testing the co-chaperone function of JDPs. In these assays, an exogenously expressed novel JDP is tested for its ability to functionally substitute for a non-expressed or nonfunctional endogenous JDP(s) by reversing a stress phenotype. For example, the in vivo functionality of prokaryotic JDPs can be tested on the basis of their ability to reverse the thermosensitivity of a dnaJ cbpA mutant strain of the bacterium Escherichia coli (OD259). Similarly, the in vivo functionality of eukaryotic JDPs can be assessed in a thermosensitive ydj1 mutant strain of the yeast Saccharomyces cerevisiae (JJ160). Here we outline the use of these thermosensitive microorganisms in complementation assays to functionally characterize a JDP from the bacterium, Agrobacterium tumefaciens (AgtDnaJ), and a JDP from the trypanosomal parasite, Trypanosoma cruzi (TcJ2).
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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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