The solution structure of an active synthetic peptide containing both the leucine zipper and the adjacent basic domain of the yeast transcription factor GCN4 (residues 220-280) was determined by NMR. The two domains show structurally distinct behaviours. In the absence of DNA, the basic domain is, although very flexible, structured and fluctuating around a helical conformation. The leucine zipper region forms a long, uninterrupted helix. From a suitable set of NMR distances the three-dimensional structure of the leucine zipper monomeric sub-domain was calculated by distance geometry algorithms. The structure of the symmetrical parallel dimer was obtained by model building using the NMR information. A smaller peptide with the sequence of the isolated basic region (residues 1-35 of the 61 residue peptide) was also synthesized. Circular dichroism studies showed 30-40% helicity. A flexible helix spans the region between residues 8 and 21. The comparison of our results with suggested models is discussed in detail.
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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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