Arp2/3 Structure Complex (IMAGE) Stony Brook University Caption An artistic representation of the Arp2/3 complex structure in an inactive state (top left) and active state with nucleated filament (bottom right). With a cryo-EM micrograph as the background it shows actin filaments nucleated from the Arp2/3 complex. Credit Stony Brook University 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.