6AVH:
reference: Arabidopsis thaliana GH3.15 acyl acid amido synthetase has a highly specific substrate preference for the auxin precursor indole-3-butyric acid., Sherp AM, Westfall CS, Alvarez S, Jez JM, J Biol Chem. 2018 Mar 23;293(12):4277-4288. doi: 10.1074/jbc.RA118.002006. Epub, 2018 Feb 8. PMID: 29462792

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