4R7G:
reference: Determination of the Formylglycinamide Ribonucleotide Amidotransferase Ammonia Pathway by Combining 3D-RISM Theory with Experiment., Tanwar AS, Sindhikara DJ, Hirata F, Anand R, ACS Chem Biol. 2015 Jan 14. PMID: 25551173

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