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Published November 18, 2011 | Accepted Version
Journal Article Open

Evidence for Interstitial Carbon in Nitrogenase FeMo Cofactor

Abstract

The identity of the interstitial light atom in the center of the FeMo cofactor of nitrogenase has been enigmatic since its discovery. Atomic-resolution x-ray diffraction data and an electron spin echo envelope modulation (ESEEM) analysis now provide direct evidence that the ligand is a carbon species.

Additional Information

© 2011 American Association for the Advancement of Science. Received 15 September 2011; accepted 19 October 2011. We thank the staff at Swiss Light Source, Villigen, Switzerland, and S. M. Consiglio for assistance with the calculations. The work was supported by Deutsche Forschungsgemeinschaft (grants Ei-520/7 to O.E., An-676/1 to S.L.A.A., and IRTG 1478), Natural Sciences and Engineering Research Council of Canada postdoctoral fellowship to L.Z., NIH (grant GM45162 to D.C.R.), and HHMI (to D.C.R.). The structural model and structure factors have been deposited with the Protein Data Bank (accession code 3U7Q).

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Created:
August 19, 2023
Modified:
October 24, 2023