1Y2N:
reference: A novel peptide isolated from a phage display peptide library with trastuzumab can mimic antigen epitope of HER-2., Jiang B, Liu W, Qu H, Meng L, Song S, Ouyang T, Shou C, J Biol Chem. 2005 Feb 11;280(6):4656-62. Epub 2004 Nov 9. PMID: 15536075

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