Effects of Mutated Titin (image) Rockefeller University Press Caption Soleus muscle fibers (green) are decreased in mice with a mutated form of the muscle protein titin (right). A Journal of General Physiology study shows that changes in the elasticity of titin can be a trigger for pathological changes in muscle. Credit Buck et al., 2014 Usage Restrictions Reporters may freely use these materials in news coverage, with the appropriate credit information. 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.