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-Structure paper
| タイトル | Macrocyclic β-arch peptides that mimic the structure and function of disease-associated tau folds. |
|---|---|
| ジャーナル・号・ページ | Nat Chem, Vol. 17, Issue 6, Page 865-874, Year 2025 |
| 掲載日 | 2025年4月30日 |
著者 | Isaac J Angera / Xueyong Xu / Benjamin H Rajewski / Grace I Hallinan / Xiaoqi Zhang / Bernardino Ghetti / Ruben Vidal / Wen Jiang / Juan R Del Valle / ![]() |
| PubMed 要旨 | Tauopathies are a class of neurodegenerative disorders that feature tau protein aggregates in the brain. Misfolded tau has the capacity to seed the fibrillization of soluble tau, leading to the prion- ...Tauopathies are a class of neurodegenerative disorders that feature tau protein aggregates in the brain. Misfolded tau has the capacity to seed the fibrillization of soluble tau, leading to the prion-like spread of aggregates. Within these filaments, tau protomers always exhibit a cross-β amyloid structure. However, distinct cross-β amyloid folds correlate with specific diseases. An understanding of how these conformations impact seeding activity remains elusive. Identifying the minimal epitopes required for transcellular propagation of tau aggregates represents a key step towards more relevant models of disease progression. Here we implement a diversity-oriented peptide macrocyclization approach towards miniature tau, or 'mini-tau', proteomimetics that can seed the aggregation of tau in engineered cells and primary neurons. Structural elucidation of one such seed-competent macrocycle reveals remarkable conformational congruence with core folds from patient-derived extracts of tau. The ability to impart β-arch form and function through peptide stapling has broad-ranging implications for the minimization and mimicry of pathological tau and other amyloid proteins that drive neurodegeneration. |
リンク | Nat Chem / PubMed:40307419 |
| 手法 | EM (らせん対称) |
| 解像度 | 3.2 Å |
| 構造データ | EMDB-44133, PDB-9b3a: EMDB-47002, PDB-9dme: |
| 化合物 | ![]() ChemComp-NH2: ![]() ChemComp-8VH: |
| 由来 |
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キーワード | PROTEIN FIBRIL / tauopathies / neurodegenerative disorders / seed-competent miniature tau macrocycle |
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