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.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3268367 | PMC |
| http://dx.doi.org/10.1126/science.1214025 | DOI Listing |
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