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Shown is the structure of the FeMo-cofactor along with the side chains for a few amino acids from the MoFe protein. Fe atoms 2, 3, 6, and 7 are labeled. The color scheme is Fe in green, Mo in purple, C in grey, N in blue, O in red, and S in yellow. The atom at the center of FeMo-cofactor (X) is shown in black. The structure is based on the PDB coordinate file 1M1N and was generated using the programs DS ViewerPro and POV-ray.
