5,10-methylenetetrahydromethanopterin + NADP(+) => 5,10-methenyl-5,6,7,8-tetrahydromethanopterin + NADPH
5,10-methylenetetrahydromethanopterin + nadp(+) => 5,10-methenyl-5,6,7,8-tetrahydromethanopterin + nadph
5,10-methylenetetrahydromethanopterin + NADP(+) => 5,10-methenyl-5,6,7,8-tetrahydromethanopterin + NADPH
5,10-methylenetetrahydromethanopterin + nadp(+) => 5,10-methenyl-5,6,7,8-tetrahydromethanopterin + nadph