The Yck2 protein is a plasma membrane-associated casein kinase 1 isoform that attaches to membranes via palmitoylation of its C terminus. We have demonstrated that Yck2p traffics to the plasma membrane on secretory vesicles. Because Akr1p, the palmitoyl transferase for Yck2p, is located on Golgi membranes, it is likely that Yck2p first associates with Golgi membranes, and then is somehow recruited to budding plasma membrane-destined vesicles. We show here that residues 499-546 are sufficient for minimal Yck2p palmitoylation and plasma membrane localization. We previously described normal plasma membrane targeting of a Yck2p construct with the final five amino acids of Ras2p substituting for the final two Cys residues of Yck2p. This Yck2p variant no longer requires Akr1p for membrane association, but targets normally. We have generated the C-terminal deletions previously shown to affect Yck2p membrane association in this variant to determine which residues are important for targeting and/or modification. We find that all of the sequences previously identified as important for plasma membrane association are required only for Akr1p-dependent modification. Furthermore, palmitoylation is sufficient for specific association of Yck2p with secretory vesicles destined for the plasma membrane. Finally, both C-terminal Cys residues are palmitoylated, and dual acylation is required for efficient membrane association.
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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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