Term Name:	homomeric SMAD protein complex
Synonyms:	SMAD1 homotrimer complex, SMAD2 homotrimer complex, SMAD2 protein complex, SMAD3 homotrimer complex, SMAD3 protein complex
Definition:	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.
Ontology:	GO: Cellular Component [GO:0071142]    QuickGO    AmiGO