2M9Y:
reference: Structure of the HHARI catalytic domain shows glimpses of a HECT E3 ligase., Spratt DE, Mercier P, Shaw GS, PLoS One. 2013 Aug 15;8(8):e74047. doi: 10.1371/journal.pone.0074047. PMID: 24058416

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