5,6,7,8-tetrahydromethanopterin + formaldehyde => 5,10-methylenetetrahydromethanopterin + H2O
5,6,7,8-tetrahydromethanopterin + formaldehyde => 5,10-methylenetetrahydromethanopterin + h2o
5,6,7,8-tetrahydromethanopterin + formaldehyde => 5,10-methylenetetrahydromethanopterin + H2O
5,6,7,8-tetrahydromethanopterin + formaldehyde => 5,10-methylenetetrahydromethanopterin + h2o