1DH3:
reference: The structure of a CREB bZIP.somatostatin CRE complex reveals the basis for selective dimerization and divalent cation-enhanced DNA binding., Schumacher MA, Goodman RH, Brennan RG, J Biol Chem 2000 Nov 10;275(45):35242-7. PMID: 10952992

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