4LXR:
reference: Structure of the Toll-Spatzle complex, a molecular hub in Drosophila development and innate immunity., Parthier C, Stelter M, Ursel C, Fandrich U, Lilie H, Breithaupt C, Stubbs MT, Proc Natl Acad Sci U S A. 2014 Apr 29;111(17):6281-6. doi:, 10.1073/pnas.1320678111. Epub 2014 Apr 14. PMID: 24733933

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