ACVR1B Proteins

Protein Information

ACVR1B is a serine/threonine kinase involved in signal transduction and cellular communication. Several truncated ACVR1B isoforms have been reported to be exclusively expressed in human pituitary tumors. Mutations of ACVR1B have been observed in pancreatic adenocarcinomas. Type I and II receptors form a stable complex after ligand binding, resulting in phosphorylation of type I receptors by type II receptors. ACVR1B encodes activin A type IB receptor, composed of 11 exons. Alternative splicing and alternative polyadenylation result in 3 fully described transcript variants. The mRNA expression of variants 1, 2, and 3 is confirmed, and a potential fourth variant contains an alternative exon 8 and lacks exons 9 through 11, but its mRNA expression has not been confirmed.

Synonyms

6820432J04; activin A receptor type 1B; activin A receptor type IB; activin A receptor, type 1B; activin A receptor, type IB; activin A receptor, type II-like kinase 4; activin receptor type IB; Activin receptor type-1B; activin receptor-like kinase 4; ACTRI; ActRIB; ActR-IB; ACVR1A; ACVR1B; ACVRLK2; Acvrlk4; ALK2; Alk4; ALK-4; FOP; Serine/threonine-protein kinase receptor R2; SKR1; SKR2; TSRI