Download MendeleyStructural heterogeneity of CTE Type I tau filaments with an interface-shifted polymorph.
Watanabe, R., Lee, E.B.(2026) Biochem Biophys Res Commun 838: 154679-154679
- PubMed: 42826653 Search on PubMed
- DOI: https://doi.org/10.1016/j.bbrc.2026.154679
- Primary Citation Related Structures:
37VX, 37VY - PubMed Abstract:
Tau filament types can differ in inter-protofilament packing while sharing the same protofilament fold. Motivated by our recent findings in vacuolar tauopathy, we analyzed cryo-electron microscopy (cryo-EM) data from brain-derived chronic traumatic encephalopathy (CTE) tau filaments deposited in EMPIAR-10313. We resolved the canonical CTE Type I structure and a previously unreported CTE Type I-like structure with a shifted protofilament interface at 2.78 and 2.96 Å, respectively. Mapping particle-state assignments back onto the original micrographs showed that the CTE Type I and CTE Type I-like packing states can occupy locally contiguous regions within the same fibrils. These findings identify an interface-shifted CTE Type I-like structure and support its local coexistence with CTE Type I within individual fibrils.
- Translational Neuropathology Research Laboratory, Department of Pathology and Laboratory Medicine, Perelman School of Medicine at the University of Pennsylvania, 3400 Spruce St, Philadelphia, PA, 19104, USA; Department of Psychiatry, University of Tsukuba Hospital, 2-1-1 Amakubo, Tsukuba, Ibaraki, 305-8576, Japan. Electronic address: watanabe.ryohei.gb@u.tsukuba.ac.jp.
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