2PK2:
reference: Cyclin Box Structure of the P-TEFb Subunit Cyclin T1 Derived from a Fusion Complex with EIAV Tat., Anand K, Schulte A, Fujinaga K, Scheffzek K, Geyer M, J Mol Biol. 2007 Jul 27;370(5):826-36. Epub 2007 May 10. PMID: 17540406

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