4HEC:
reference: Mycobacterium tuberculosis Rv2179c establishes a new exoribonuclease family with broad phylogenetic distribution., Abendroth J, Ollodart A, Andrews ES, Myler PJ, Staker BL, Edwards TE, Arcus VL, Grundner C, J Biol Chem. 2013 Dec 4. PMID: 24311791

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