'Protein_Id'	'sf_name'	'definition'	'organism'	'gene_id'	'gene_symbol'	'Molecular function'	'Biological process'	'Cellular component'	'Protein class'	'Public_node_id'
'AN0'	'SUBFAMILY NOT NAMED'	''	''	''	''	''	''	''	''	'PTN002135576'
'BRAJA|EnsemblGenome=BAC47008|UniProtKB=P06121'	''	'Nitrogenase molybdenum-iron protein alpha chain'	'Bradyrhizobium japonicum'	'EnsemblGenome:BAC47008'	'nifD'	''	''	''	''	'PTN002459906'
'METAC|EnsemblGenome=MA_1216|UniProtKB=Q8TRG4'	''	'Nitrogenase protein alpha chain'	'Methanosarcina acetivorans'	'EnsemblGenome:MA_1216'	'vnfD'	''	''	''	''	'PTN002135581'
'METAC|EnsemblGenome=MA_1210|UniProtKB=Q8TRG9'	''	'Nitrogenase protein alpha chain'	'Methanosarcina acetivorans'	'EnsemblGenome:MA_1210'	'anfD'	''	''	''	''	'PTN002135579'
'METAC|EnsemblGenome=MA_3898|UniProtKB=Q8TJ90'	''	'Nitrogenase protein alpha chain'	'Methanosarcina acetivorans'	'EnsemblGenome:MA_3898'	'nifD'	''	''	''	''	'PTN002135582'
'THEYD|EnsemblGenome=THEYE_A1716|UniProtKB=B5YH17'	''	'Nitrogenase protein alpha chain'	'Thermodesulfovibrio yellowstonii'	'EnsemblGenome:THEYE_A1716'	'nifD'	''	''	''	''	'PTN002135584'
'GEOSL|EnsemblGenome=GSU2820|UniProtKB=Q749C3'	''	'Nitrogenase protein alpha chain'	'Geobacter sulfurreducens'	'EnsemblGenome:GSU2820'	'nifD'	''	''	''	''	'PTN002135587'