Fig. 1 (IMAGE) Osaka University Caption Polydom binds to Tie1 and activates the PI3K/Akt signaling pathway. (A) The domain structure of Polydom and its mutant protein. (B) Tie1 binds to Polydom, but not to its mutant. (C) Lymphatic endothelial cells of wild-type (left) and Polydom-deficient (right) mice. The PI3K/Akt pathway is inactivated in the lymphatic cells of Polydom-deficient mice. Credit Kiyotoshi Sekiguchi Usage Restrictions Credit must be given to the creator. No modifications of the work are permitted. 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.