Fimbrin is a 68-70 kDa actin-bundling protein in animal cells and lower eukaryotes that participates in diverse morphogenetic processes by cross-linking actin filaments into bundles. Here we report the cloning by degenerate polymerase chain reaction (PCR) of ATFIM1, a 2.3 kb cDNA from Arabidopsis thaliana that codes for a novel 76 kDa fimbrin-like polypeptide (AtFim1). The predicted sequence of AtFim1 shares ca. 40% identity with nonplant fimbrins and contains two tandem repeats, each possessing a 27 amino acid region identified as a putative actin-binding domain in fimbrins and in a larger family of actin cross-linking proteins. Preceding the tandem repeats at the amino terminus of AtFim1 is a single-EF-hand-like domain with moderate homology to calmodulin-like calcium-binding proteins. AtFim1 differs from non-plant fimbrins, however, in that it contains an extended carboxy-terminal tail of ca. 65 amino acids. ATFIM1 is encoded by a single gene, although sequencing of two partial fimbrin-like expressed sequence tag (EST) clones indicates that Arabidopsis contains at least two fimbrin-like proteins. Northern blot analysis and reverse-transcription PCR (RT-PCR) demonstrated that ATFIM1 is expressed in all major organs examined (roots, leaves, stems, flowers and siliques). This is the first report of the cloning of a full length plant gene that encodes a putative actin filament-bundling protein.
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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 | Disease Ontology Term | Disease Ontology Term ID | Qualifier | Evidence | Method | Source | Assigned On | 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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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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