6APA:
reference: A Structural Basis for (129) Xe Hyper-CEST Signal in TEM-1 beta-Lactamase., Roose BW, Zemerov SD, Wang Y, Kasimova MA, Carnevale V, Dmochowski IJ, Chemphyschem. 2018 Aug 27. doi: 10.1002/cphc.201800624. PMID: 30151973

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