A mAb produced by immunization of mice with tyrosine-phosphorylated proteins from activated B lymphocytes was found to recognize valosin-containing protein (VCP). VCP is the mammalian homologue of the Saccharomyces cerevisiae CDC48 protein and has localized regions of sequence identity with the yeast Sec18 and Pas1 proteins and the mammalian NSF protein, all of which are important in intracellular vesicular traffic or formation. VCP was found to be constitutively phosphorylated on tyrosine in Rous sarcoma virus-transformed fibroblasts. Phosphorylation of VCP on tyrosine was stimulated only modestly during activation of B lymphocytes by ligation of membrane Ig. In contrast, treatment of B cells with either H2O2 or a combination of H2O2 and Na3VO4 greatly increased tyrosine phosphorylation of VCP. These results may suggest that under normal conditions tyrosine phosphorylation of VCP has a rapid turnover and that it can be detected easily only when dephosphorylation is inhibited by artificial means.
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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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