Predicted to enable S-methylmethionine-homocysteine S-methyltransferase activity; betaine-homocysteine S-methyltransferase activity; and zinc ion binding activity. Predicted to be involved in L-methionine salvage; S-adenosylmethionine metabolic process; and S-methylmethionine metabolic process. Orthologous to human BHMT2 (betaine--homocysteine S-methyltransferase 2). [provided by Alliance of Genome Resources, Apr 2022]