homocysteine–tetrahydrofolate methyltransferase

ho·mo·cys·te·ine–tet·ra·hy·dro·fo·late meth·yl·trans·fer·ase (ho″mo-sisґteēn tet″rə-hi″dro-foґlāt meth″əl-transґfər-ās) methionine synthase.