Answers are grounded in this paper and cite their sources.
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.
No takes yet. Share an insight, caveat, or question.
Spatzal et al. (2011) studied this question.
Synapse has enriched 10 related papers. Consider them for comparative context: