1QQA: Purine Repressor Mutant-Hypoxanthine-Palindromic Operator Co
reference: The role of lysine 55 in determining the specificity of the purine repressor for its operators through minor groove interactions., Glasfeld A, Koehler AN, Schumacher MA, Brennan RG, J Mol Biol 1999 Aug 13;291(2):347-61. PMID: 10438625

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