>tr|Q50249 F420-NONREDUCING HYDROGENASE I - Methanosarcina mazei (Methanosarcina frisia). MVNVTVDPLTRIEGHQRISTEVDANGVITDAQSSSLIFRGFERILQHQDPRDAAFLTQRICGVCPLSHGLTATNALDELY GVAEHVPKDALVMRNIFQGLNMAASHATHIYVLWAPDLANPAYKKVLTPLGDTGNAVWDEMLGRFAPISYKMDGVPIPAG SSYLAAIPEKKRLQEMIALIAGRMPGPSALYPGGYTYPATVADITKLSTYYLQIMDFISAHTLRVPFDTWIENTYKASSP TKAVSFVTEHLTDLINKSTTSNDFSKEAGWGDTEFVPAFGSELVGEKLLGLPASLKHDTIGGYQDPSKICFVAYGGYYKP TDGYDPRSPAGDRIFTSGVVSGNLEYLKFGPDKITESTAHSFYQNSVNDLPPVKGETVPFTDPEKIVYTGGSDSQYSWDK APRYDGIAGEVGPLARMLNIKEPLVTGLALALAENGYSPANVYTRMLARIQETAILAYELLNWVTVDYEPGGKISVPLDF NAAKDSQGMGLWEAPRGALGHWISTNGSGKVANYQCIVPGSWLMSPRDSNGIPGPLEQSLIGSKINPVGEVDYTNPVGIF HMGRSYDPCISCAVHTIDLTGKCAPNTLRIL