3SMA:
reference: A new N-acetyltransferase fold in the structure and mechanism of the phosphonate biosynthetic enzyme FrbF., Bae B, Cobb R, Desieno MA, Zhao H, Nair SK, J Biol Chem. 2011 Aug 24. PMID: 21865168

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