| Name | homomeric SMAD protein complex |
| ID | GO_0071142 |
| collection_id | Cellular component |
| Alternative ID | GO:0071143 |
| Description | A protein complex composed of a single type of SMAD family proteins. In the absence of Smad4, phosphorylation of R-SMADs results in their homotrimerization. However, these complexes do not appear to import into the nucleus and are assumed to be transcriptionally inactive. |
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| Genes |