Nuclear (IMAGE) Johns Hopkins Medicine Caption Nuclear transport protein RanGAP1 (red) clumps up with mutant Huntingtin protein (green) in neurons. Credit Credit: Courtesy of Cell Press, <i>Neuron</i> April 5, 2017 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.