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Molybdenum nitrogenase. (A) One catalytic half of the Fe protein:MoFe protein complex with the Fe protein homodimer shown in tan, the MoFe protein α subunit in green, and the β subunit in cyan. (B) Space filling and stick models for the 4Fe–4S cluster (F), P-cluster (P), and FeMo-co (M). Made with Pymol and ChemDraw using PDB:2AFK.
