2KGF:
reference: NMR Structure of the N-Terminal Domain of Capsid Protein from the Mason-Pfizer Monkey Virus., Macek P, Chmelik J, Krizova I, Kaderavek P, Padrta P, Zidek L, Wildova M, Hadravova R, Chaloupkova R, Pichova I, Ruml T, Rumlova M, Sklenar V, J Mol Biol. 2009 Jun 13. PMID: 19527730

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