2R3C:
reference: Potent D-peptide inhibitors of HIV-1 entry., Welch BD, Vandemark AP, Heroux A, Hill CP, Kay MS, Proc Natl Acad Sci U S A. 2007 Oct 23;104(43):16828-33. Epub 2007 Oct 17. PMID: 17942675

This OCA Structure page
uses Jmol, developed by the Jmol Development Team (documentation).