[Term] id: PR:000000411 name: activin receptor type-1 isoform 1, signal peptide removed phosphorylated form def: "An activin receptor type-1 isoform 1, signal peptide removed form that includes at least one phosphorylated residue." [PRO:CNA] comment: Category=modification. synonym: "ACVR1/iso:1/SigPep-/PhosRes+" EXACT PRO-short-label [PRO:DNx] intersection_of: PR:000021938 ! activin receptor type-1 isoform 1, signal peptide removed form intersection_of: has_part MOD:00696 ! phosphorylated residue