2IGE:
reference: The nature and importance of the inter-epsilon chain disulfide bonds in human IgE., Helm BA, Ling Y, Teale C, Padlan EA, Bruggemann M, Eur J Immunol 1991 Jun;21(6):1543-8. PMID: 1828428

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