[Term]
id: PR:000000525
name: activin receptor type-1B isoform 1 phosphorylated 1
def: "An activin receptor type-1B isoform 1 phosphorylated form that is phosphorylated at Ser/Thr residues in the GS-motif region (GSGSGLP and surrounding sequence) by activated activin receptor type-2, and constitutes an active receptor subunit." [PRO:CNA, PMID:8622651, PMID:8721982]
comment: Category=modification.
synonym: "ACVR1B/iso:1/Phos:1" EXACT PRO-short-label [PRO:DNx]
is_a: PR:000000412 ! activin receptor type-1B isoform 1 phosphorylated form
relationship: has_part MOD:00696 ! phosphorylated residue