1LCD:
reference: Structure of the complex of lac repressor headpiece and an 11 base-pair half-operator determined by nuclear magnetic resonance spectroscopy and restrained molecular dynamics., Chuprina VP, Rullmann JA, Lamerichs RM, van Boom JH, Boelens R, Kaptein R, J Mol Biol 1993 Nov 20;234(2):446-62. PMID: 8230225

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