Predicted to enable betaine-homocysteine S-methyltransferase activity. Acts upstream of or within digestive system development and type B pancreatic cell development. Predicted to be located in cytoplasm. Predicted to be active in cytosol. Is expressed in hepatocyte; liver; yolk; and yolk syncytial layer. Human ortholog(s) of this gene implicated in cerebral infarction; congenital heart disease; and pulmonary embolism. Orthologous to several human genes including BHMT (betaine--homocysteine S-methyltransferase).