2NS4:
reference: Structure-Guided Peptidomimetic Design Leads to Nanomolar beta-Hairpin Inhibitors of the Tat-TAR Interaction of Bovine Immunodeficiency Virus(,)., Athanassiou Z, Patora K, Dias RL, Moehle K, Robinson JA, Varani G, Biochemistry. 2007 Jan 23;46(3):741-51. PMID: 17223695

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