1QVN:
reference: Hot-spot mimicry of a cytokine receptor by a small molecule., Thanos CD, DeLano WL, Wells JA, Proc Natl Acad Sci U S A. 2006 Oct 17;103(42):15422-7. Epub 2006 Oct 10. PMID: 17032757

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