In somatic cells, untranslated mRNAs accumulate in cytoplasmic foci called processing bodies or P-bodies. P-bodies contain complexes that inhibit translation and stimulate mRNA deadenylation, decapping, and decay. Recently, certain P-body proteins have been found in germ granules, RNA granules specific to germ cells. We have investigated a possible connection between P-bodies and germ granules in Caenorhabditis elegans. We identify PATR-1, the C. elegans homolog of the yeast decapping activator Pat1p, as a unique marker for P-bodies in C. elegans embryos. We find that P-bodies are inherited maternally as core granules that mature differently in somatic and germline blastomeres. In somatic blastomeres, P-bodies recruit the decapping activators LSM-1 and LSM-3. This recruitment requires the LET-711/Not1 subunit of the CCR4-NOT deadenylase and correlates spatially and temporally with the onset of maternal mRNA degradation. In germline blastomeres, P-bodies are maintained as core granules lacking LSM-1 and LSM-3. P-bodies interact with germ granules, but maintain distinct dynamics and components. The maternal mRNA nos-2 is maintained in germ granules, but not in P-bodies. We conclude that P-bodies are distinct from germ granules, and represent a second class of RNA granules that behaves differently in somatic and germline cells.
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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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