3D9O:
reference: Snapshots of the RNA processing factor SCAF8 bound to different phosphorylated forms of the carboxy-terminal domain of RNA-polymerase II., Becker R, Loll B, Meinhart A, J Biol Chem. 2008 Jun 11. PMID: 18550522

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