2RPS:
reference: A novel peptide mediates aggregation and migration of hemocytes from an insect., Nakatogawa S, Oda Y, Kamiya M, Kamijima T, Aizawa T, Clark KD, Demura M, Kawano K, Strand MR, Hayakawa Y, Curr Biol. 2009 May 12;19(9):779-85. Epub 2009 Apr 16. PMID: 19375321

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