9HX3 image
Deposition Date 2025-01-06
Release Date 2025-11-05
Last Version Date 2025-11-05
Entry Detail
PDB ID:
9HX3
Keywords:
PROTEIN FIBRIL
Title:
Amyloid fibril of TTR
Biological Source:
Source Organism:
Homo sapiens (Taxon ID: 9606)
Method Details:
Experimental Method:
ELECTRON MICROSCOPY
Resolution:
3.00 Å
Aggregation State:
FILAMENT
Reconstruction Method:
HELICAL
9HX3 validation report
Macromolecular Entities
Structures with similar UniProt ID
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Transthyretin
Gene (Uniprot):TTR
Chain IDs:A, B (auth: C), C (auth: B), D (auth: E), E (auth: D)
Chain Length:147
Number of Molecules:5
Biological Source:Homo sapiens
UniProt ID:P02766 Pfam ID:PF00576
Ligand Molecules
NA
Primary Citation
Apolipoprotein A-IV fibrils: structural diagnosis of mixed cardiac amyloidosis.
Nat Commun 16 9276 9276 (2025)
PMID: 41115976 DOI: 10.1038/s41467-025-64902-0

Abstact

Cardiac amyloidosis (CA) occurs when misfolded proteins deposit as fibrils in the extracellular space of the heart. The fibrillogenic properties of apolipoprotein A-IV (ApoAIV) have been histologically observed and associated with CA pathogenesis. We report the structure of an ApoAIV amyloid from a patient's heart, which coexist amongst transthyretin (TTR) amyloids. These cases of undetected mixed CA highlight the importance of developing broad-spectrum anti-amyloid treatments to improve outcomes in patients.

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Disease

Primary Citation of related structures
9HX3