Eukaryotic transcription is regulated predominantly by the post-translational modification of the participating components. One such modification is the cis-trans isomerization of peptidyl-prolyl bonds, which results in a conformational change in the protein involved. Enzymes that carry out this reaction include the yeast peptidyl-prolyl cis/trans isomerase Ess1 and its human counterpart Pin1, both of which recognize phosphorylated target motifs exclusively. Consequently, they operate together with proline-directed serine-threonine kinases and phosphatases. High-profile client proteins involved in transcription include steroid hormone receptors, cell-cycle regulators and immune mediators. Other key targets are elements of the transcription machinery, including the multiply phosphorylated carboxy-terminal domain of RNA polymerase II. Changes in isomerase activity have been shown to alter the transactivation potential, protein stability or intracellular localization of these client proteins. The resulting disruption to developmental processes and cell proliferation has been linked, in some cases, to human cancers.
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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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