[Term] id: PR:000027746 name: TGF-beta receptor-regulated smad protein phosphorylated form def: "A TGF-beta receptor-regulated smad protein that has been phosphorylated in the last two Ser residues within the SSxS C-terminal motif by TGF-beta pathway activation." [PRO:CNA] comment: Category=modification. synonym: "phospho-R-SMAD" BROAD [Reactome:R-HSA-171182] synonym: "R-SMAD(TGFB)/PhosRes+" EXACT PRO-short-label [PRO:DAN] is_a: PR:000000066 ! TGF-beta receptor-regulated smad protein