The 'cysteine-zinc DNA binding finger' is a recently identified sequence motif that is present in a wide variety of transcriptional regulatory proteins and is thought to be directly involved in DNA binding. It has been proposed that an essential component of this structure is a zinc ion bound between two pairs of cysteine residues. The GAL4-encoded protein of Saccharomyces cerevisiae, which binds to DNA and activates the transcription of several genes, contains this sequence motif. Here I describe a gal4 mutant with an alteration in the cysteine-zinc DNA binding finger whose defect is corrected in vivo by high concentrations of ZnCl2. The DNA binding activity of the altered protein from this mutant is restored by ZnCl2 in vitro. This is evidence that the GAL4 protein indeed contains zinc ions essential for its DNA binding activity.
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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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