Download MendeleyCryo-EM structures of the membrane repair protein dysferlin.
Huang, H.L., Grandinetti, G., Heissler, S.M., Chinthalapudi, K.(2024) Nat Commun 15: 9650-9650
- PubMed: 39511170
- DOI: https://doi.org/10.1038/s41467-024-53773-6
- Primary Citation of Related Structures:
9B8K, 9B8L - PubMed Abstract:
Plasma membrane repair in response to damage is essential for cell viability. The ferlin family protein dysferlin plays a key role in Ca 2+ -dependent membrane repair in striated muscles. Mutations in dysferlin lead to a spectrum of diseases known as dysferlinopathies. The lack of a structure of dysferlin and other ferlin family members has impeded a mechanistic understanding of membrane repair mechanisms and the development of therapies. Here, we present the cryo-EM structures of the full-length human dysferlin monomer and homodimer at 2.96 Å and 4.65 Å resolution. These structures define the architecture of dysferlin, ferlin family-specific domains, and homodimerization mechanisms essential to function. Furthermore, biophysical and cell biology studies revealed how missense mutations in dysferlin contribute to disease mechanisms. In summary, our study provides a framework for the molecular mechanisms of dysferlin and the broader ferlin family, offering a foundation for the development of therapeutic strategies aimed at treating dysferlinopathies.
Organizational Affiliation:
Department of Physiology and Cell Biology, Dorothy M. Davis Heart and Lung Research Institute, The Ohio State University College of Medicine, Columbus, USA.
