>sp|Q50786|GLNB1_METTM Nitrogen fixation nifHD region GlnB-like protein 1 OS=Methanothermobacter marburgensis GN=glnBA MKMIRAIIRPEKSEEVADALDDAGFPALTKIDVIGRGKQKGIRFDEIYYDEIPKTMMLIV VDDADAERVVLVISESGYTGKIGDGKIFISPVENAYTVRTREEGL