>sp|Q8PTR0|MCH_METMA Methenyltetrahydromethanopterin cyclohydrolase OS=Methanosarcina mazei GN=mch PE=3 SV=1
MISVNEMGSYVIEEMLDWSEDLKTEVIKLENGATIIDCGIKAEGGYEAGMYLARLCLADL
ADLKYSTFDLNGIKWPAIQVATDNPVIACMASQYAGWRISVGNYFGMGSGPARALGLKPK
ELYEEIGYEDDFEAAVLVMESDKLPDEKVVEYIAKHCSVDPENVMIAVAPTASIAGSVQI
SARVVETGIHKFESIGFDINCIKSGYGIAPIAPIVGNDVQCMGSTNDCVIYCGETNYTVS
FEGELAKLEDFVRKVPSTTSDDFGKPFYQTFKAANFDFFKVDAGMFAPARVTVNDLKNKK
TISSGGLYPEILLESFGIRKV