AR Structure (image) Institute for Research in Biomedicine (IRB Barcelona) Share Print E-Mail Caption Image of the Androgen Receptor structure. In orange, leucines induce the glutamine chain to form a helix, in red. The leucines protect against aggregation Credit (B. Topal, IRB Barcelona) Usage Restrictions None Share Print E-Mail 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.