2JU6:
reference: Solid-State Protein-Structure Determination with Proton-Detected Triple-Resonance 3D Magic-Angle-Spinning NMR Spectroscopy., Zhou DH, Shea JJ, Nieuwkoop AJ, Franks WT, Wylie BJ, Mullen C, Sandoz D, Rienstra CM, Angew Chem Int Ed Engl. 2007 Nov 12;46(44):8380-8383. PMID: 17907259

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