A highly conserved signal cascade functions subsequent to receptor tyrosine kinase activation. Signaling by the sevenless receptor, required for differentiation of the R7 photoreceptor neuron in Drosophila, is reduced by mutations in E(sev)3A and E(sev)3B. We show here that E(sev)3A is a member of the Hsp90 family of stress proteins and that E(sev)3B encodes a homolog of the cell cycle control protein Cdc37 from S. cerevisiae. Mutations in E(sev)3B also dominantly enhance mutations in Dmcdc2, the gene encoding the p34 protein kinase that regulates the G2/M transition. Together, these data support a role for Hsp90 proteins in tyrosine kinase regulation and suggest that signals promoting neuronal differentiation may involve cell cycle control.
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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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