[Term] id: PR:000000203 name: activin receptor type-1B isoform 3 def: "An activin receptor type-1B that is a translation product of some mRNA whose exon structure and start site selection renders it capable of giving rise to a protein with the amino acid sequence represented by UniProtKB:P36896-3 or a 1:1 ortholog thereof." [PRO:CNA, PRO:DAN, PMID:11117535] comment: Category=sequence. Predominantly expressed in pituitary adenomas. This isoform has a truncated kinase domain. synonym: "ACVR1B/iso:3" EXACT PRO-short-label [PRO:DNx] synonym: "Alk4-3" RELATED [] synonym: "SKR2-3" RELATED [] property_value: has_archetype PR:P36896-3 is_a: PR:000000068 ! activin receptor type-1B