3QB8:
reference: Paramecium bursaria chlorella virus 1 encodes a polyamine acetyltransferase., Charlop-Powers Z, Jakoncic J, Gurnon JR, Van Etten JL, Zhou MM, J Biol Chem. 2012 Mar 16;287(12):9547-51. Epub 2012 Jan 25. PMID: 22277659

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