MCM2-7 (IMAGE) Hong Kong University of Science and Technology Caption This is a helix 2 insertion loop (H2I) and Beta turns contributed by each subunit form constriction points that could immobilize DNA Credit Division of Life Science, HKUST Usage Restrictions None License Licensed 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.