1CDU:
reference: Kinetic and structural analysis of mutant CD4 receptors that are defective in HIV gp120 binding., Wu H, Myszka DG, Tendian SW, Brouillette CG, Sweet RW, Chaiken IM, Hendrickson WA, Proc Natl Acad Sci U S A 1996 Dec 24;93(26):15030-5. PMID: 8986758

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