2K5X:
reference: Structure Determination of Protein-Protein Complexes Using NMR Chemical Shifts: Case of an Endonuclease Colicin-Immunity Protein Complex., Montalvao RW, Cavalli A, Salvatella X, Blundell TL, Vendruscolo M, J Am Chem Soc. 2008 Nov 4. PMID: 18980319

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