transcription factor phosphorylated and activated by bone morphogenetic protein type 1 receptor kinases. Participates in a wide range of critical processes including morphogenesis, cell-fate determination, proliferation, differentiation and apoptosis. Phosphorylated forms dimerize with collaborating Smad4 and are translocated into the nucleus, where the transcription of target genes is stimulated. Note: This description may include information from UniProtKB.
Protein type: Transcription factor; DNA binding protein
Cellular Component: nucleoplasm; transcription factor complex; cytoplasm; integral to membrane; nuclear inner membrane; intracellular; nucleus; cytosol
Molecular Function: identical protein binding; protein binding; receptor signaling protein activity; protein kinase binding; transcription factor activity; transforming growth factor beta receptor, pathway-specific cytoplasmic mediator activity
Biological Process: wound healing; primary microRNA processing; signal transduction; embryonic pattern specification; protein amino acid phosphorylation; mesodermal cell fate commitment; BMP signaling pathway; negative regulation of cell proliferation; homeostatic process; ureteric bud development; transforming growth factor beta receptor signaling pathway; midbrain development; inflammatory response; kidney development; hindbrain development; response to drug; transcription, DNA-dependent; MAPKKK cascade; positive regulation of dendrite morphogenesis; response to organic nitrogen; SMAD protein complex assembly; positive regulation of osteoblast differentiation; gamete generation; positive regulation of transcription from RNA polymerase II promoter; osteoblast fate commitment
SS: The number of records in which this modification site was determined using site-specific methods. SS methods include amino acid sequencing, site-directed mutagenesis, modification site-specific antibodies, specific MS strategies, etc.