Protein and Helper (IMAGE) Max-Planck-Gesellschaft Caption The helper protein (blue) pulls on one end of Rubisco (colored) and frees up the sugar. The blockage is lifted. Credit Manajit Hayer-Hartl / Max Planck Institute for Biochemistry 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.