The role of the SEC7 gene product in yeast intercompartmental protein transport was examined. A spectrum of N-linked oligosaccharide structures, ranging from core to nearly complete outer chain carbohydrate, was observed on glycoproteins accumulated in secretion-defective sec7 mutant cells. Terminal alpha 1-3-linked outer chain mannose residues failed to be added to N-linked glycoproteins in sec7 cells at the restrictive temperature. These results suggest that outer chain glycosyl modifications do not occur within a single compartment. Additional evidence consistent with subdivision of the yeast Golgi apparatus came from a cell-free glycoprotein transport reaction in which wild-type membranes sustained outer chain carbohydrate growth up to, but not including, addition of alpha 1-3 mannose residues. Golgi apparatus compartments may specialize in addition of distinct outer chain determinants. The SEC7 gene product was suggested to regulate protein transport between and from functional compartments of the yeast Golgi apparatus.
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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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