1GQW:
reference: X-ray crystal structure of Escherichia coli taurine/alpha-ketoglutarate dioxygenase complexed to ferrous iron and substrates., Elkins JM, Ryle MJ, Clifton IJ, Dunning Hotopp JC, Lloyd JS, Burzlaff NI, Baldwin JE, Hausinger RP, Roach PL, Biochemistry 2002 Apr 23;41(16):5185-92. PMID: 11955067

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