3IDB:
reference: Novel Isoform-Specific Interfaces Revealed by PKA RIIbeta Holoenzyme Structures., Brown SH, Wu J, Kim C, Alberto K, Taylor SS, J Mol Biol. 2009 Sep 11. PMID: 19748511

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