As part of our ongoing efforts to understand the functional role of vertebrate centractins, we have identified a new member of the actin-related family of proteins in the yeast Saccharomyces cerevisiae using a PCR-based approach. Consistent with the current nomenclature for actin-related proteins in yeast, we propose to denote this locus ACT3. The primary amino acid sequence of Act3p is most similar to canine and human alpha-centractin (73% similarity/54% identity). The sequence of a genomic clone indicates ACT3 lies adjacent to and is transcribed convergently with respect to FUR1 on chromosome VIII. Molecular genetic analysis indicates ACT3 is represented by a single gene from which the corresponding mRNA is expressed at a low level compared to ACT1. Tetrad analysis of heterozygotes harboring a TRP1 replacement of the ACT3-coding region indicates ACT3 is nonessential for growth under normal conditions and at extremes of temperature and osmolarity. However, growth at 14 degrees C indicates a spindle orientation defect similar to phenotypes recently described for yeast harboring mutations in actin, tubulin, or cytoplasmic dynein. Taken together, our data suggest that ACT3 is the S. cerevisiae homologue of vertebrate centractins.
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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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