Small Peptide at its Binding Site at the Proteasome (image) Technische Universitaet Muenchen Share Print E-Mail Caption The tiny alpha-keto-aldehyde-peptide fits a specific site on the proteasome like a key going into a lock and blocks the proteasome. However, unlike other inhibitors, the reaction of these two groups is reversible: The key can be removed from the lock and the proteasome can resume its work. Credit Prof. Dr. Michael Groll / TUM 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.