5CET:
reference: Structural and Biochemical Insight into the Mechanism of Rv2837c from Mycobacterium tuberculosis as a c-di-NMP Phosphodiesterase., He Q, Wang F, Liu S, Zhu D, Cong H, Gao F, Li B, Wang H, Lin Z, Liao J, Gu L, J Biol Chem. 2016 Feb 12;291(7):3668-81. doi: 10.1074/jbc.M115.699801. Epub 2015 , Dec 14. PMID: 26668313

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