2.3.1.101 formylmethanofuran---tetrahydromethanopterin N-formyltransferase; formylmethanofuran-tetrahydromethanopterin formyltransferase; formylmethanofuran:tetrahydromethanopterin formyltransferase; N-formylmethanofuran(CHO-MFR):tetrahydromethanopterin(H4MPT • • •