A smad1 that has been phosphorylated on the last two Ser residues within the C-terminal SSxS motif as a result of the activation of the bone morphogenetic protein (BMP) signaling pathway. Example: UniProtKB:Q15797, Ser-463/Ser-465, MOD:00046. [ PRO:DAN ]
Synonyms: BMP receptor-activated smad1 SMAD1/Phos:1
This is just here as a test because I lose it