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Showing 1–3 of 3 results
Advanced filters: Author: Jarett Wilcoxen Clear advanced filters

  • NifB is a radical SAM enzyme involved in the biosynthesis of the Mo-nitrogenase cofactor, which is responsible for the ambient conversion of N2 to NH3. Here, the authors identify and uncover the function of a His43 residue as an essential nitrogen ligand of NifB in cofactor biosynthesis.

    • Lee A. Rettberg
    • Jarett Wilcoxen
    • Markus W. Ribbe
    ResearchOpen Access
    Nature Communications
    Volume: 11, P: 1-8

  • NifB is a key enzyme in the biosynthesis pathway of the nitrogenase FeMo cofactor. Here, the authors investigate the maturation of its iron-sulfur clusters by EPR and biochemical analyses, showing how individual precursor clusters participate in the formation of the final iron-sulfur cluster.

    • Lee A. Rettberg
    • Jarett Wilcoxen
    • Yilin Hu
    ResearchOpen Access
    Nature Communications
    Volume: 9, P: 1-8

  • Located in the catalytically important belt region, the ‘ninth sulfur’ of the nitrogenase cofactor has now been shown to be inserted through coordination of sulfite by two cluster iron atoms at a vacant belt site. This is followed by in situ reduction of sulfite to sulfide, which enables the subsequent transfer and functionalization of the cofactor.

    • Kazuki Tanifuji
    • Andrew J. Jasniewski
    • Markus W. Ribbe
    Research
    Nature Chemistry
    Volume: 13, P: 1228-1234