Protein misfolding is stimulated by stress, such as heat, and heat shock proteins (Hsps) are the first line of defense against these undesirable situations. Plants, which are naturally sessile, are perhaps more exposed to stress factors than some other organisms, and consequently, the role of Hsps is crucial to maintain homeostasis. Hsp90, because of its key role in infection and other stresses, is targeted in therapies that improve plant production by increasing resistance to both biotic and abiotic stress. In addition, Hsp90 is a primary factor in the maintenance of homeostasis in plants. Therefore, we cloned and purified Hsp90 from Citrus sinensis (sweet orange). Recombinant C. sinensis Hsp90 (rCsHsp90) was produced and measured by circular dichroism (CD), intrinsic fluorescence spectroscopy and dynamic light scattering. rCsHsp90 formed a dimer in solution with a Stokes radius of approximately 62Å. In addition, it was resistant to thermal unfolding, was able to protect citrate synthase from aggregation, and Western blot analysis demonstrated that CsHsp90 was constitutively expressed in C. sinensis cells. Our analysis indicated that CsHsp90 is conformationally similar to that of yeast Hsp90, for which structural information is available. Therefore, we showed that C. sinensis expresses an Hsp90 chaperone that has a conformation and function similar to other Hsp90s.
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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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