passages.id: split_8_test_954_passage
passages.type: progene_text
passages.text: Some of the members of this family include the vitamin B ( 12 ) - dependent methionine synthases , E. coli S-methylmethionine-S-homocysteine methyltransferase , and A. bisulcatus S - methylmethionine - selenocysteine methyltransferase .