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Daniel R. Southworth

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Open access Aug 2026

Biased stochastic motor dynamics drive bidirectional, processive translocation by the AAA+ disaggregase Hsp104

Protein aggregation disrupts proteostasis and drives neurodegeneration. Hsp104 is a hexameric, ring-shaped AAA+ ATPase that dissolves protein aggregates, yet how hexamers translocate and extract polypeptides trapped in mechanically resistant aggregates remains unclear. Using substrates that recapitulate the physical co...

Jia-Bei Lin, Jaskamaljot Kaur Banwait, A. Saurabh et al. · 0 citations
Open access Aug 2026

Cofactor-Free Tau Filaments Are Dynamic and Undergo Structural Evolution Driven by Thermodynamic Control

Environmental factors, such as mechanical stress and/or polyanions, play an important role in promoting the thermodynamic stability of otherwise dynamic tau fibrils, and it is speculated that, in patients, such factors might contribute to the maturation of disease-specific conformers.

Wyatt C. Powell, Nicholas L. Yan, Eric Tse et al. · 0 citations

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