Structures of a protease inhibitor A2ML1 (IMAGE) Aarhus University Caption Scientists have determined the structures of a protease inhibitor called A2ML1 that is found in human skin. The new results reveal how a large conformational rearrangement in A2ML1 allow it to trap a protease and prevent it from cleaving substrates. Credit Figure: Seandean Lykke Harwood Usage Restrictions Image may be used only to illustrate the research described in the accompanying release. License Original 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.