4I6N:
reference: Stabilization of an Unusual Salt Bridge in Ubiquitin by the Extra C-Terminal Domain of the Proteasome-Associated Deubiquitinase UCH37 as a Mechanism of Its Exo Specificity., Morrow ME, Kim MI, Ronau JA, Sheedlo MJ, White RR, Chaney J, Paul LN, Lill MA, Artavanis-Tsakonas K, Das C, Biochemistry. 2013 May 9. PMID: 23617878

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