| 2NCK: reference: Crystal structure of Myxococcus xanthus nucleoside diphosphate kinase and its interaction with a nucleotide substrate at 2.0 A resolution., Williams RL, Oren DA, Munoz-Dorado J, Inouye S, Inouye M, Arnold E, J Mol Biol 1993 Dec 20;234(4):1230-47. PMID: 8263923 |
This OCA 
Structure page
uses Jmol,
developed by the Jmol Development Team
(documentation).