Download MendeleyCrystallography Reveals Metal-Triggered Restructuring of beta-Hairpins.
Thuc Dang, V., Engineer, A., McElheny, D., Drena, A., Telser, J., Tomczak, K., Nguyen, A.I.(2024) Chemistry 30: e202402101-e202402101
- PubMed: 39152095 Search on PubMed
- DOI: https://doi.org/10.1002/chem.202402101
- Primary Citation Related Structures:
9BNH, 9BNI - PubMed Abstract:
Metal binding to β-sheets occurs in many metalloproteins and is also implicated in the pathology of Alzheimer's disease. De novo designed metallo-β-sheets have been pursued as models and mimics of these proteins. However, no crystal structures of canonical β-sheet metallopeptides have yet been obtained, in stark contrast to many examples for ɑ-helical metallopeptides, leading to a poor understanding for their chemistry. To address this, we have engineered tryptophan zippers, stable 12-residue β-sheet peptides, to bind Cu(II) ions and obtained crystal structures through single crystal X-ray diffraction (SC-XRD). We find that metal binding triggers several unexpected supramolecular assemblies that demonstrate the range of higher-order structures available to metallo-β-sheets. Overall, these findings underscore the importance of crystallography in elucidating the rich structural landscape of metallo-β-sheet peptides.
- University of Illinois Chicago, Chemistry, UNITED STATES.
Organizational Affiliation:
