The origins of specificity in gene expression are a central concern in understanding developmental control. Mediator protein complexes regulate transcriptional initiation, acting as modular adaptors linking specific transcription factors to core RNA polymerase II. Here, we identified the Drosophila homologs of 23 human mediator genes and mutations of two, dTRAP240 and of dTRAP80 (the putative fly homolog of yeast SRB4). Clonal analysis indicates a general role for dTRAP80 necessary for cell viability. The dTRAP240 gene is also essential, but cells lacking its function are viable and proliferate normally. Clones reveal localized developmental activities including a sex comb cell identity function. This contrasts with the ubiquitous nuclear accumulation of dTRAP240 protein in imaginal discs. Synergistic genetic interactions support shared developmental cell and segment identity functions of dTRAP240 and dTRAP80, potentially within a common complex. Further, they identify the homeotic Sex combs reduced product, required for the same cell/tissue identities, as a functional partner of these mediator proteins.
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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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