3NB2:
reference: Biochemical and structural studies of a HECT-like ubiquitin ligase from Escherichia coli O157:H7., Lin DY, Diao J, Zhou D, Chen J, J Biol Chem. 2011 Jan 7;286(1):441-9. Epub 2010 Oct 27. PMID: 20980253

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