Introduction to Protein-DNA Interactions (image) Cold Spring Harbor Laboratory Caption This is a computer-generated structural diagram showing the overall geometry of the Lac repressor protein binding to Lac operator DNA. (Generated using PyMOL software from the data in the Protein Data Bank database from entry 2KEI.) Credit ©2013 Cold Spring Harbor Laboratory Press Usage Restrictions None Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.