L-selenohomocysteine + 5-methyltetrahydropteroyltri-L-glutamate = tetrahydropteroyltri-L-glutamate + L-selenomethionine
l-selenohomocysteine + 5-methyltetrahydropteroyltri-l-glutamate = tetrahydropteroyltri-l-glutamate + l-selenomethionine