1NCP:
reference: Structural characterization of a 39-residue synthetic peptide containing the two zinc binding domains from the HIV-1 p7 nucleocapsid protein by CD and NMR spectroscopy., Omichinski JG, Clore GM, Sakaguchi K, Appella E, Gronenborn AM, FEBS Lett 1991 Nov 4;292(1-2):25-30. PMID: 1959614

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