The type I phosphoribosyltransferase OMP synthase (EC 2.4.2.10) is involved in de novo synthesis of pyrimidine nucleotides forming the UMP precursor orotidine 5'-monophosphate (OMP). The homodimeric enzyme has a Rossman α/β core topped by a base-enclosing "hood" domain and a flexible domain-swapped catalytic loop. High-resolution X-ray structures of the homologous Salmonella typhimurium and yeast enzymes show that a general compacting of the core as well as movement of the hood and a major disorder-to-order transition of the loop occur upon binding of ligands MgPRPP and orotate. Here we present backbone NMR assignments for the unliganded yeast enzyme (49 kDa) and its complex with product OMP. We were able to assign 212-213 of the 225 non-proline backbone (15)N and amide proton resonances. Significant difference in chemical shifts of the amide cross peaks occur in regions of the structure that undergo movement upon ligand occupancy in the S. typhimurium enzyme.
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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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