Protein Machinery Replicates DNA (image) DOE/Brookhaven National Laboratory Caption Protein machinery involved in DNA replication caught in action: The "origin recognition complex" (yellow), already activated by an initiation factor (brown), grabs onto the helicase core (purple blue) to load the helicase ring onto the DNA double helix (red). The background is a cryo-electron micrograph of many of these complexes (dark) frozen in ice. Credit Courtesy Brookhaven National Laboratory Usage Restrictions To illustrate stories about this research. 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.