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ALK2 On ligand binding, forms a receptor complex consisting of two type II and two type I transmembrane serine/threonine kinases. Type II receptors phosphorylate and activate type I receptors which autophosphorylate, then bind and activate SMAD transcriptional regulators. Receptor for activin. May be involved for left-right pattern formation during embryogenesis. Interacts with FKBP1A. Interacts with FCHO1. Expressed in normal parenchymal cells, endothelial cells, fibroblasts and tumor-derived epithelial cells. Belongs to the protein kinase superfamily. TKL Ser/Thr protein kinase family. TGFB receptor subfamily. Note: This description may include information from UniProtKB.
Protein type: EC; Kinase, protein; Membrane protein, integral; Protein kinase, Ser/Thr (receptor); Protein kinase, TKL; STKR family; TKL group; Type1 subfamily
Chromosomal Location of Human Ortholog: 2q24.1
Cellular Component: activin receptor complex; integral to plasma membrane
Molecular Function: activin binding; activin receptor activity, type I; ATP binding; protein binding; protein homodimerization activity; protein kinase activity; protein serine/threonine kinase activity; SMAD binding; transforming growth factor beta binding
Biological Process: activin receptor signaling pathway; BMP signaling pathway; G1/S transition of mitotic cell cycle; negative regulation of activin receptor signaling pathway; negative regulation of signal transduction; peptidyl-threonine phosphorylation; positive regulation of bone mineralization; positive regulation of cell migration; positive regulation of osteoblast differentiation; positive regulation of transcription from RNA polymerase II promoter; positive regulation of transcription, DNA-dependent; protein amino acid phosphorylation; regulation of ossification; transforming growth factor beta receptor signaling pathway
Disease: Fibrodysplasia Ossificans Progressiva
Reference #:  Q04771 (UniProtKB)
Alt. Names/Synonyms: activin A receptor, type I; activin A receptor, type II-like kinase 2; Activin receptor type I; Activin receptor type-1; Activin receptor-like kinase 2; ACTR-I; ACTRI; ACVR1; ACVR1A; ACVRLK2; ALK-2; ALK2; FOP; hydroxyalkyl-protein kinase; Serine/threonine-protein kinase receptor R1; SKR1; TGF-B superfamily receptor type I; TSR-I; TSRI
Gene Symbols: ACVR1
Molecular weight: 57,153 Da
Basal Isoelectric point: 7.12  Predict pI for various phosphorylation states
Protein-Specific Antibodies or siRNAs from Cell Signaling Technology® Total Proteins
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