Syntaxins are thought to participate in the specific interactions between vesicles and acceptor membranes in intracellular protein trafficking. VAM3 of Saccharomyces cerevisiae encodes a 33 kDa protein (Vam3p) with a hydrophobic transmembrane segment at its C terminus. Vam3p has structural similarities to syntaxins of yeast, animal and plant cells. delta vam3 cells accumulated spherical structures of 200-600 nm in diameter, but lacked normal large vacuolar compartments. Loss of function of Vam3p resulted in inefficient processing of vacuolar proteins proteinase A, proteinase B and carboxypeptidase Y, and defective maturation of alkaline phosphatase. Subcellular fractionation and immunofluorescence microscopy showed that Vam3p was localized to the vacuolar membranes. Vam3p was accumulated in certain regions of the vacuolar membranes. We conclude from these observations that Vam3p is a novel member of syntaxin in the vacuoles and it provides the t-SNARE function in a late step of the vacuolar assembly.
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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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