Protein
Nitrogenase iron-iron protein beta chain
Organism
Azotobacter vinelandii
Function
This iron-iron protein is part of the nitrogenase complex that catalyzes the key enzymatic reactions in nitrogen fixation. Other nitrogenase complexes utilize a molybdenum-iron protein or a vanadium-iron protein.
Similarity
Belongs to the NifD/NifK/NifE/NifN family.
Sequence
MTCEVKEKGRVGTINPIFTCQPAGAQFVSIGIKDCIGIVHGGQGCVMFVRLIFSQHYKESFELASSSLHEDGAVFGACGRVEEAVDVLLSRYPDVKVVPIITTCSTEIIGDDVDGVIKKLNEGLLKEKFPDREVHLIAMHTPSFVGSMISGYDVAVRDVVRHFAKREAPNDKINLLTGWVNPGDVKELKHLLGEMDIEANVLFEIESFDSPILPDGSAVSHGNTTIEDLIDTGNARATFALNRYEGTKAAEYLQKKFEIPAIIGPTPIGIRNTDIFLQNLKKATGKPIPQSLAHERGVAIDALADLTHMFLAEKRVAIYGAPDLVIGLAEFCLDLEMKPVLLLLGDDNSKYVDDPRIKALQENVDYGMEIVTNADFWELENRIKNEGLELDLILGHSKGRFISIDYNIPMLRVGFPTYDRAGLFRYPTVGYGGAIWLAEQMANTLFADMEHKKNKEWVLNVW