HELICASE 1 (IMAGE) Rice University Caption A helicase protein model created at Rice University shows a before-and-after of how the six-sided ring moves along DNA to split double strands into single strands in response to ATP hydrolysis during replication. Credit Shikai Jin/Rice University Usage Restrictions NONE License Original content 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.