4AND:
reference: Intersubunit Ionic Interactions Stabilize the Nucleoside Diphosphate Kinase of Mycobacterium tuberculosis., Georgescauld F, Moynie L, Habersetzer J, Cervoni L, Mocan I, Borza T, Harris P, Dautant A, Lascu I, PLoS One. 2013;8(3):e57867. doi: 10.1371/journal.pone.0057867. Epub 2013 Mar 5. PMID: 23526954

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