1T3G:
reference: Crystal structure of the Toll/interleukin-1 receptor domain of human IL-1RAPL., Khan JA, Brint EK, O'Neill LA, Tong L, J Biol Chem 2004 Jul 23;279(30):31664-70. Epub 2004 Apr 30. PMID: 15123616

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