Amyloidogenic segments undergo conformational templating by HSP90-HSP70 heterocomplex machinery
🧪 Overview
The recognition and remodeling of amyloidogenic protein species involves a sequential conformational templating mechanism mediated by HSP90-HSP70 heterocomplexes, where HSP90 serves as the primary conformational sensor while HSP70 provides the refolding machinery. This mechanism centers on HSP90's unique ability to bind partially folded client proteins through its middle domain, which recognizes the altered global fold topology that occurs when amyloidogenic segments become exposed. Upon HSP90 binding, the chaperone induces a conformational change that further exposes the cryptic β-sheet propensity regions, creating high-affinity binding sites for HSP70 recruitment through the co-chaperone HOP (HSP70-HSP90 organizing protein). The HSP90-HSP70 heterocomplex then orchestrates a coordinated ATP-dependent cycle where HSP90's conformational constraint maintains the substrate in a refolding-competent state while HSP70 directly engages the exposed amyloidogenic segments.
...🧬 Mechanism
Curated pathway from expert analysis
flowchart TD
A["HSPA8, HSPA1A, DNAJB6, DNAJB2<br/>Hypothesis Target"]
B["Aggregation<br/>Cited Mechanism"]
C["Cellular Response<br/>Stress or Clearance Change"]
D["Neural Circuit Effect<br/>Synapse/Glia Vulnerability"]
E["Neurodegeneration<br/>Disease-Relevant Outcome"]
A --> B
B --> C
C --> D
D --> E
style A fill:#1a237e,stroke:#4fc3f7,color:#4fc3f7
style B fill:#b71c1c,stroke:#ef9a9a,color:#ef9a9a
style E fill:#b71c1c,stroke:#ef9a9a,color:#ef9a9a⚖️ Evidence
No linked papers recorded for this hypothesis yet.
🏥 Translation
🧬 3D Protein Structure — HSP90AA1
🧠 GTEx v10 Brain ExpressionJSON
Median TPM across 13 brain regions for HSP90AA1, HSPA8, HSPA1A, DNAJB6, DNAJB2, STIP1 from GTEx v10.
💉 Clinical Trials
No clinical trials data linked to this hypothesis yet.
No curated ClinVar variants loaded for this hypothesis.
Run scripts/backfill_clinvar_variants.py to fetch P/LP/VUS variants.
No DepMap CRISPR Chronos data found for HSP90AA1, HSPA8, HSPA1A, DNAJB6, DNAJB2, STIP1.
Run python3 scripts/backfill_hypothesis_depmap.py to populate.
🏆 Tournament
🏆 Arenas / Elo
📊 Market Indicators
💾 Resource Usage
▸Metadatasource: v1_phase_c_backfill · origin_type: debate_synthesizer
| source | v1_phase_c_backfill |
| origin_type | debate_synthesizer |
| _schema_version | 1 |