4CD3:
reference: Crystal structure of NTPDase2 in complex with the sulfoanthraquinone inhibitor PSB-071., Zebisch M, Baqi Y, Schafer P, Muller CE, Strater N, J Struct Biol. 2014 Jan 21. pii: S1047-8477(14)00006-9. doi:, 10.1016/j.jsb.2014.01.005. PMID: 24462745

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