SEARCH Articles Figures Tables MoFeS Nitrogenase Nitrogenase MoFe protein Nitrogenase MoFe protein cofactor Nitrogenase MoFe protein crystal structure Nitrogenase MoFe protein function Nitrogenase MoFe protein models Nitrogenase MoFe protein mutants Nitrogenase MoFe protein sources Nitrogenase MoFe protein structure Nitrogenase MoFe protein substrate binding site