part of part of has input has input has output has output process reaction 5,10-methenyl-5,6,7,8-tetrahydromethanopterin + H(2)O = H(+) + N(5)-formyl-5,6,7,8-tetrahydromethanopterin 1 1 1 1 1 1 KEGG:R03464 reaction UPa:UCR03464 METACYC:3.5.4.27-RXN RHEA:19056 5,10-methenyl-5,6,7,8-tetrahydromethanopterin from CO(2): step 3/3 formate from formaldehyde (H(4)MPT route): step 3/5 H(2)O H(+) N(5)-formyl-5,6,7,8-tetrahydromethanopterin 5,10-methenyl-5,6,7,8-tetrahydromethanopterin