Transport Protein has an Unexpected Role (IMAGE) Salk Institute Caption Scientists discovered that a protein called Nup153 (green) control how embryonic stem cells (blue) develop. When Salk scientists deleted Nup153 (left), the cells were free to rapidly begin to turn into the precursors of neurons (marked in red), suggesting a previously unknown role for Nup153. Credit Courtesy of the Salk Institute Usage Restrictions with credit and with related coverage 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.