TGF-beta receptor type-1 precursor (EC 2.7.11.30) (TGF-beta receptor type I) (TGFR-1) (TGF-beta type I receptor) (Transforming growth factor-beta receptor type I) (TbetaR-I) (Serine/threonine-protein kinase receptor R4) (SKR4) (Activin receptor-like kinas [Source:Uniprot/SWISSPROT;Acc:P36897]