In the yeast Saccharomyces cerevisiae, the ribosomal RNA genes are present in a single tandem array. A transcriptional enhancer element lies within the spacer region between each rRNA gene, 2.2 kilobases upstream from the transcription initiation site. We have identified previously two proteins, REB1 and REB2, that bind to specific sites within the enhancer (Morrow, B. E., Johnson, S. P., and Warner, J. R. (1989) J. Biol. Chem. 264, 9061-9068). REB1 binds also to a second, higher affinity site near the promoter, 210 base pairs upstream from the initiation site. This report describes the purification and further characterization of REB1. REB1 is a single polypeptide with an apparent molecular mass of 125,000 Da that binds to the sequence CCGGGTAA. It has been found to bind also within transcriptional control regions of several genes transcribed by RNA polymerase II, such as the UASG of the GAL1-GAL10 spacer. Immunoprecipitation analysis demonstrated that REB1 is phosphorylated.
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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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