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. 2016 Aug 9;113(34):9504–9508. doi: 10.1073/pnas.1609574113

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Fig. 2. — XAS/EXAFS analyses of solvent-extracted M-clusters from NifEN and NifDK. Fe K-edge XAS spectra (A) and smoothed second derivatives (B) of NMF-extracted M-cluster^NifEN (red) and M-cluster^NifDK (black). Fe K-edge EXAFS (C) and Fourier transforms (D) of data (pink) and fits (red) of M-cluster^NifEN, and those of data (gray) and fits (black) of M-cluster^NifDK. Data have been normalized to one Fe absorber. Mo K-edge XAS spectra (E) and smoothed second derivatives (F) of NMF-extracted M-cluster^NifEN (red) and M-cluster^NifDK (black). Mo K-edge EXAFS (G) and Fourier transforms (H) of data (pink) and fits (red) of M-cluster^NifEN, and those of data (gray) and fits (black) of M-cluster^NifDK. Data have been normalized to one Mo absorber.