African trypanosomes are protozoan parasites that evade the host immune system by varying their dense antigenic coat. The Variant Surface Glycoprotein (VSG) is expressed exclusively from telomere-linked expression sites that contain in addition to the VSG gene, a number of open reading frames termed Expression Site Associated Genes (ESAGs). Here we demonstrate by complementation of a yeast mutant deleted for adenylate cyclase (cyr-1), that an ESAG from Trypanosoma equiperdum encodes an adenylate cyclase. Furthermore, we report that adjacent to adenylate cyclase in the expression site, is a separate open reading frame that encodes a protein sequence motif similar to the leucine-rich repeat regulatory domain of Saccharomyces cerevisiae and Schizosaccharomyces pombe adenylate cyclases. The finding of two adjacent open reading frames homologous to a single enzyme in yeast suggests that the two expression site encoded proteins may interact to regulate adenylate cyclase activity during the course of an infection.
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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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