1HTV:
reference: Crystal structure of destripeptide (B28-B30) insulin: implications for insulin dissociation., Ye J, Chang W, Liang D, Biochim Biophys Acta 2001 May 5;1547(1):18-25. PMID: 11343787

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