>sp|A6UU55|MCH_META3 Methenyltetrahydromethanopterin cyclohydrolase OS=Methanococcus aeolicus GN=mch MLSVNLKSLPIVENMIEKAEEMNIEVIKLENGATVLDCGVNVMGSIEAGKAFTKICLGGL AHVGVSIAGTVSDEMVLPCVKVKTSHPAIATLGSQKAGWTINIGKFFAMGSGPARALAKI PKATYEEINYEDNADVAILCLEASQLPNEEVAEFVAEKCGVDVSKVYLLVAPTSSLVGSI QISGRVVENGTYKMLEALHFDVNKVKFAAGIAPVAPIIGDDLAMMGATNDMVLYGGRTYY YIESDENDDVEALCKALPSCSSQDYGKPFLETFKAANYDFYKIDKGMFAPAVVVINDMRT GKLVTYGKPHVDVLKKSLGYKELE