2JAS:
reference: Structure-function analysis of a bacterial deoxyadenosine kinase reveals the basis for substrate specificity., Welin M, Wang L, Eriksson S, Eklund H, J Mol Biol. 2007 Mar 9;366(5):1615-23. Epub 2006 Dec 8. PMID: 17229440

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