3H1D:
reference: A structural element within the HUWE1 HECT domain modulates self-ubiquitination and substrate ubiquitination activities., Pandya RK, Partridge JR, Love KR, Schwartz TU, Ploegh HL, J Biol Chem. 2010 Feb 19;285(8):5664-73. Epub 2009 Dec 10. PMID: 20007713

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