UFD2a is a mammalian homolog of Saccharomyces cerevisiae Ufd2, originally described as an E4 ubiquitination factor. UFD2a belongs to the U-box family of ubiquitin ligases (E3s) and likely functions as both an E3 and E4. We have isolated and characterized the mouse gene (Ube4b) for UFD2a. A full-length (approximately 5700 bp) Ube4b cDNA was isolated and the corresponding gene spans >100 kb, comprising 27 exons. Luciferase reporter gene analysis of the 5(') flanking region of Ube4b revealed that nucleotides -1018 to -943 (relative to the translation initiation site) possess promoter activity. This functional sequence contains two putative Sp1 binding sites but not a TATA box. Immunoblot and immunohistochemical analyses revealed that UFD2a is expressed predominantly in the neuronal tissues. We also show that UFD2a interacts with VCP (a AAA-family ATPase) that is thought to mediate protein folding. These data implicate UFD2a in the degradation of neuronal proteins by the ubiquitin-proteasome 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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