1107-TPPP/p25 Amyloid Seeding Activity for MSA

Paper Talk · Jun 10, 2026 · 15m

This research identifies the tubulin polymerization promoting protein (TPPP/p25) as a highly specific biomarker for diagnosing multiple system atrophy (MSA). Researchers discovered that while the protein's native state is self-protected from aggregation, its core domain (CORE) is prone to forming toxic amyloid fibrils that distinguish MSA from related conditions like Parkinson’s disease. Using cryo-electron microscopy, the study mapped the structural remodeling required for this aggregation and identified a disease-associated mutation (A119V) that accelerates the process. These insights led…