1E0Q:
reference: Structural characterization of a mutant peptide derived from ubiquitin: implications for protein folding., Zerella R, Chen PY, Evans PA, Raine A, Williams DH, Protein Sci 2000 Nov;9(11):2142-50. PMID: 11152124

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