Enables transforming growth factor beta binding activity. Involved in several processes, including cellular response to tumor necrosis factor; positive regulation of transforming growth factor beta production; and response to testosterone. Located in cytoplasm and extracellular space. Biomarker of diabetic retinopathy; heart disease; myocardial infarction; and prostate cancer. Human ortholog(s) of this gene implicated in cholangiocarcinoma; pancreatic cancer; and pancreatic ductal carcinoma. Orthologous to human THBS1 (thrombospondin 1). [provided by Alliance of Genome Resources, Apr 2022]