>sp|Q50787|GLNB2_METTM Nitrogen fixation nifHD region GlnB-like protein 2 OS=Methanothermobacter marburgensis GN=glnBB MKEVIAIIRPKNMKKTRDVLESLGFPSFNATRVLGRGKQRAIIDEVTIPSPSPEIDEVRG TMRYIPKRMIQITVEDPDVQLVVEAIMKVNHTGKIGDGKIFVCPVDDAMRIRTGDRGTEA L