Although actin filaments can form by oligomer annealing in vitro, they are assumed to assemble exclusively from actin monomers in vivo. In this study, we show that a pool of actin resistant to the monomer-sequestering drug latrunculin A (lat A) contributes to filament assembly in vivo. Furthermore, we show that the cofilin accessory protein Aip1 is important for establishment of normal actin monomer concentration in cells and efficiently converts cofilin-generated actin filament disassembly products into monomers and short oligomers in vitro. Additionally, in aip1Delta mutant cells, lat A-insensitive actin assembly is significantly enhanced. We conclude that actin oligomer annealing is a physiologically relevant actin filament assembly pathway in vivo and identify Aip1 as a crucial factor for shifting the distribution of short actin oligomers toward monomers during disassembly.
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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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| Evidence ID | Analyze ID | File | Description |
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