The vav proto-oncogene encodes a protein of unknown function that is rendered oncogenic by loss of a short N-terminal domain. A correction reported here to the vav sequence reveals that a central domain of some 230 amino acids is similar to the products of three genes: the human dbl oncogene, now known to encode a GDP-GTP exchange factor for the Ras-like polypeptide CDC42Hs; the CDC24 gene of Saccharomyces cerevisiae, which participates with CDC42Sc in organization of the cytoskeleton for budding; and the human bcr gene, which recombines with the abl oncogene in certain forms of leukemia. Furthermore, the N-terminal portion of Vav (and of CDC24) is similar to that of certain proteins that associate with filamentous structures. These similarities suggest that Vav, and perhaps also Bcr, may function as a GDP-GTP exchange factor for a Ras-like molecule such as CDC42Hs, and that its action may coordinate cytoplasmic architecture with the cell cycle. Reported evidence that the vav proto-oncogene is widely expressed in hematopoietic cells but not other cell types is extended here by detection of vav mRNA in 49 of 50 murine hematopoietic cell lines representing diverse hematopoietic lineages, and by in situ hybridization in embryos showing expression confined to the only hematopoietic tissue, fetal liver. Thus, like Dbl in other cell types, Vav may function throughout the hematopoietic compartment to govern a Ras-like signal transduction pathway.
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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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