Improved Protein Structure Detection (IMAGE) Purdue University Caption An example of the secondary structure detection in cryo-EM density map using Emap2Sec. A left is an EM map of archaeal 20S proteasome (EMDB ID: EMD-1733). At right are detected secondary structures by Emap2Sec. Points in magenta are the positions of detected alpha helices; yellow points are detected beta strands, and green points are for detected coils (other structures). Credit Purdue University image/Daisuke Kihara 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.