>sp|P54809|GLNB2_METBA Nitrogen fixation nifHD1 region GlnB-like protein 2 OS=Methanosarcina barkeri GN=glnBB MKEVTAVVRPNKMSVTKDALDKIGYRRMTAIPVLGKGKQRGISGELNFYIQPKLLAKRYS TGMKYIPKRLLSIVVNDEDVDQVIKTIIGVNQTAQIGDGKIFVESIDEVIRIRTGEKGEL ALK