Enables mitogen-activated protein kinase kinase kinase binding activity and transforming growth factor beta receptor activity, type II. Involved in several processes, including animal organ development; negative regulation of cardiac muscle cell proliferation; and transmembrane receptor protein serine/threonine kinase signaling pathway. Located in caveola; cell surface; and cytosol. Is integral component of plasma membrane. Used to study membranoproliferative glomerulonephritis. Biomarker of artery disease (multiple); hepatobiliary system cancer (multiple); kidney disease; pulmonary fibrosis; and type 2 diabetes mellitus. Human ortholog(s) of this gene implicated in Loeys-Dietz syndrome 2; Marfan syndrome; gastrointestinal system cancer (multiple); hereditary nonpolyposis colorectal cancer type 6; and pancreatic cancer. Orthologous to human TGFBR2 (transforming growth factor beta receptor 2). [provided by Alliance of Genome Resources, Apr 2022]