Commander complex (IMAGE) University of Queensland Caption A 3D model of the Commander complex, a bundle of proteins that act as postal workers in cells. Credit Institute for Molecular Bioscience The University of Queensland Usage Restrictions Please credit Institute for Molecular Bioscience The University of Queensland 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.