1JQ0:
reference: Mutations that destabilize the gp41 core are determinants for stabilizing the simian immunodeficiency virus-CPmac envelope glycoprotein complex., Liu J, Wang S, Hoxie JA, LaBranche CC, Lu M, J Biol Chem 2002 Apr 12;277(15):12891-900. PMID: 11830586

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