| 3MY1: reference: Halogen bonds form the basis for selective P-TEFb inhibition by DRB., Baumli S, Endicott JA, Johnson LN, Chem Biol. 2010 Sep 24;17(9):931-6. PMID: 20851342 |
This OCA 
Structure page
uses Jmol,
developed by the Jmol Development Team
(documentation).