title: 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.
authors.affiliation: Institut für Organische Chemie und Biochemie, Albert-Ludwigs-Universität Freiburg, Freiburg, Germany.
authors.forename: Thomas
authors.initials: T
authors.lastname: Spatzal
authors.forename: Müge
authors.initials: M
authors.lastname: Aksoyoglu
authors.forename: Limei
authors.initials: L
authors.lastname: Zhang
authors.forename: Susana L A
authors.initials: SL
authors.lastname: Andrade
authors.forename: Erik
authors.initials: E
authors.lastname: Schleicher
authors.forename: Stefan
authors.initials: S
authors.lastname: Weber
authors.forename: Douglas C
authors.initials: DC
authors.lastname: Rees
authors.forename: Oliver
authors.initials: O
authors.lastname: Einsle
mesh_terms: D016948:Azotobacter vinelandii / Q000737:chemistry*; D002244:Carbon / Q000737:chemistry*; D018360:Crystallography, X-Ray; D004578:Electron Spin Resonance Spectroscopy; D008958:Models, Molecular; D015394:Molecular Structure; D008983:Molybdoferredoxin / Q000737:chemistry*; D009584:Nitrogen / Q000737:chemistry
chemical_list: D008983:Molybdoferredoxin; D002244:Carbon; D009584:Nitrogen
references.citation: Science. 2002 Sep 6;297(5587):1696-700
references.pmid: 12215645
references.citation: Inorg Chem. 2007 Dec 24;46(26):11437-49
references.pmid: 18027933