Steroid receptor activator RNA protein (SRA1p) is the translation product of the bi-functional long non-coding RNA steroid receptor activator RNA 1 (SRA1) that is part of the steroid receptor coactivator-1 acetyltransferase complex and is indicated to be an epigenetic regulatory component. Previously, the SRA1p protein was suggested to contain an RNA recognition motif (RRM) domain. We have determined the solution structure of the C-terminal domain of human SRA1p by NMR spectroscopy. Our structure along with sequence comparisons among SRA1p orthologs and against authentic RRM proteins indicates that it is not an RRM domain but rather an all-helical protein with a fold more similar to the PRP18 splicing factor. NMR spectroscopy on the full SRA1p protein suggests that this structure is relevant to the native full-length context. Furthermore, molecular modeling indicates that this fold is well conserved among vertebrates. Amino acid variations in this protein seen across sequenced human genomes, including those in tumor cells, indicate that mutations that disrupt the fold occur vary rarely and highlight that its function is well conserved. SRA1p had previously been suggested to bind to the SRA1 RNA, but NMR spectra of SRA1p in the presence of its 80-nt RNA target suggest otherwise and indicate that this protein must be part of a multi-protein complex in order to recognize its proposed RNA recognition element.
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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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Evidence ID | Analyze ID | File | Description |
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