4YZ7:
reference: Structural Basis for the Inhibition of a Phospholipase A2-Like Toxin by Caffeic and Aristolochic Acids., Fernandes CA, Cardoso FF, Cavalcante WG, Soares AM, Dal-Pai M, Gallacci M, Fontes MR, PLoS One. 2015 Jul 20;10(7):e0133370. doi: 10.1371/journal.pone.0133370., eCollection 2015. PMID: 26192963

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