4AHC:
reference: Structures of an apo and a binary complex of an evolved archeal B family DNA polymerase capable of synthesising highly cy-dye labelled DNA., Wynne SA, Pinheiro VB, Holliger P, Leslie AG, PLoS One. 2013 Aug 5;8(8):e70892. doi: 10.1371/journal.pone.0070892. Print 2013. PMID: 23940661

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