2LEG:
reference: High-resolution membrane protein structure by joint calculations with solid-state NMR and X-ray experimental data., Tang M, Sperling LJ, Berthold DA, Schwieters CD, Nesbitt AE, Nieuwkoop AJ, Gennis RB, Rienstra CM, J Biomol NMR. 2011 Nov;51(3):227-33. Epub 2011 Sep 22. PMID: 21938394

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