The Mig1 DNA-binding protein of Saccharomyces cerevisiae was expressed and purified from yeast and the physical properties were characterized by several methods, including gel filtration, sucrose gradient sedimentation and native gel electrophoresis. Purified Mig1 exists as a monomer with a Stokes' radius of 48 A and a sedimentation coefficient of 3.55 S. Mig1 has an elongated shape with a frictional coefficient of 1.83. The K(d) of purified Mig1 for the SUC2 A site is 2.8 nM and for SUC2 B site 25.8 nM; these values were similar for Mig1 purified from repressed and derepressed cells. Full-length Mig1 expressed in yeast binds more tightly to SUC2 B than bacterially expressed GST-Mig1. Sucrose gradient sedimentation resolved a larger molecular weight form of Mig1 in whole-cell extracts that was not seen in purified samples and may represent a complex with another protein. This complex is found within the nucleus and is seen only in repressed cells. Mig1 exists in multiple phosphorylation states and only less phosphorylated forms of Mig1 are associated with this complex.
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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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