>tr|Q50248 F420-NONREDUCING HYDROGENASE I PRECURSOR - Methanosarcina mazei (Methanosarcina frisia). MSTGTTNLVRTLDSMDFLKMDRRTFMKAVSALGATAFLGTYQTEIVNALEFAETKVIWIHGSECTGCSESVLNGGNPDIV QALTKLNVNLAYHETLCMQQGIWNDGELVNTSELNSEILLEDLYKEGNYILVVEGSIPNGPDGSGRYLVIGNKTFKETLG EAAKNANAIVAVGACACWGGITSADSDIEKDTDYRGVAFKKTDASKGMLKELGIDKPVINIPGCPCHPDWVLLTLGAVIL GKIKIPDDLPAALDQYGRPKVFFPPDHTVHENCPRRGYYDRGEFDTEVGGEKCLWKLGCKAPYAHADCGIRRWNGSVSMC TQAGGPCINCVDPGFPDASRPLYVEAEDKGIVGANIDTIAKVAVGAAAVAAGVHAVRRMGKGE