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. Author manuscript; available in PMC: 2008 Sep 23.
Published in final edited form as: J Am Chem Soc. 2007 Jun 12;129(26):8112–8121. doi: 10.1021/ja069199r

Figure 1.

Figure 1

The active site “FeMoco” of nitrogenase. The “belt” region refers to the central Fe6S3X core, where X is an unidentified anion (probably C4−, N3−, or O2−).9