An enzyme complex containing a vanadium-iron cluster found in some species, such as Azotobacter vinelandii. It is composed of two proteins, dinitrogenase and nitrogenase reductase; dinitrogenase, the vanadium-iron protein, is tetrameric with an alpha2-beta2 structure, and nitrogenase reductase is a homodimer.
vanadium-iron nitrogenase activity