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- EMDB-65345: Cryo-EM structure of Congo Red-bound ATTRA97S amyloid fibrils ext... -

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Basic information

Entry
Database: EMDB / ID: EMD-65345
TitleCryo-EM structure of Congo Red-bound ATTRA97S amyloid fibrils extracted from patient-derived abdominal adipose biopsy tissu
Map data
Sample
  • Tissue: Congo Red-bound transthyretin amyloid fibril.
    • Protein or peptide: Transthyretin
  • Ligand: sodium 3,3'-(1E,1'E)-biphenyl-4,4'-diylbis(diazene-2,1-diyl)bis(4-aminonaphthalene-1-sulfonate)
Keywordsamyloid / protein fibril
Function / homology
Function and homology information


Defective visual phototransduction due to STRA6 loss of function / negative regulation of glomerular filtration / The canonical retinoid cycle in rods (twilight vision) / purine nucleobase metabolic process / hormone binding / Non-integrin membrane-ECM interactions / phototransduction, visible light / molecular sequestering activity / Retinoid metabolism and transport / retinoid metabolic process ...Defective visual phototransduction due to STRA6 loss of function / negative regulation of glomerular filtration / The canonical retinoid cycle in rods (twilight vision) / purine nucleobase metabolic process / hormone binding / Non-integrin membrane-ECM interactions / phototransduction, visible light / molecular sequestering activity / Retinoid metabolism and transport / retinoid metabolic process / hormone activity / azurophil granule lumen / Amyloid fiber formation / Neutrophil degranulation / protein-containing complex binding / protein-containing complex / : / extracellular exosome / extracellular region / identical protein binding
Similarity search - Function
Transthyretin, conserved site / Transthyretin signature 2. / Transthyretin, thyroxine binding site / Transthyretin signature 1. / Transthyretin / Transthyretin/hydroxyisourate hydrolase / Transthyretin/hydroxyisourate hydrolase domain / Transthyretin/hydroxyisourate hydrolase domain superfamily / HIUase/Transthyretin family
Similarity search - Domain/homology
Biological speciesHomo sapiens (human)
Methodhelical reconstruction / cryo EM / Resolution: 3.0 Å
AuthorsMa BY / Yao YX / Li D / Liu C
Funding support1 items
OrganizationGrant numberCountry
Not funded
CitationJournal: To Be Published
Title: Cryo-EM structure of Congo Red-bound ATTRA97S amyloid fibrils extracted from patient-derived abdominal adipose biopsy tissue
Authors: Ma BY / Yao YX / Li D / Liu C
History
DepositionJul 11, 2025-
Header (metadata) releaseJul 15, 2026-
Map releaseJul 15, 2026-
UpdateJul 15, 2026-
Current statusJul 15, 2026Processing site: PDBc / Status: Released

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Structure visualization

Supplemental images

emd_65345.png

Downloads & links

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Map

FileDownload / File: emd_65345.map.gz / Format: CCP4 / Size: 91.1 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)
Projections & slices

Image control

Size
Brightness
Contrast
Others
AxesZ (Sec.)Y (Row.)X (Col.)
0.83 Å/pix.
x 288 pix.
= 239.04 Å		0.83 Å/pix.
x 288 pix.
= 239.04 Å		0.83 Å/pix.
x 288 pix.
= 239.04 Å

Surface

Projections

Slices (1/3)

Slices (1/2)

Slices (2/3)

Images are generated by Spider.

Voxel sizeX=Y=Z: 0.83 Å
Density

Histogram

Histogram (log scale)
Contour LevelBy AUTHOR: 0.012
Minimum - Maximum-0.04422683 - 0.090684265
Average (Standard dev.)0.00046240163 (±0.0038542307)
SymmetrySpace group: 1
Details

EMDB XML:

Map geometry
Axis orderXYZ
Origin000
Dimensions288288288
Spacing288288288
CellA=B=C: 239.04 Å
α=β=γ: 90.0 °

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Supplemental data

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Half map: #1

Fileemd_65345_half_map_1.map
Projections & Slices
AxesZYX

Projections

Slices (1/2)
Density Histograms

Histogram

Histogram (log scale)

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Half map: #2

Fileemd_65345_half_map_2.map
Projections & Slices
AxesZYX

Projections

Slices (1/2)
Density Histograms

Histogram

Histogram (log scale)

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Sample components

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Entire : Congo Red-bound transthyretin amyloid fibril.

EntireName: Congo Red-bound transthyretin amyloid fibril.
Components
  • Tissue: Congo Red-bound transthyretin amyloid fibril.
    • Protein or peptide: Transthyretin
  • Ligand: sodium 3,3'-(1E,1'E)-biphenyl-4,4'-diylbis(diazene-2,1-diyl)bis(4-aminonaphthalene-1-sulfonate)

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Supramolecule #1: Congo Red-bound transthyretin amyloid fibril.

SupramoleculeName: Congo Red-bound transthyretin amyloid fibril. / type: tissue / ID: 1 / Parent: 0 / Macromolecule list: #1
Source (natural)Organism: Homo sapiens (human)

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Macromolecule #1: Transthyretin

MacromoleculeName: Transthyretin / type: protein_or_peptide / ID: 1 / Number of copies: 16 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 13.79336 KDa
SequenceString:
GPTGTGESKC PLMVKVLDAV RGSPAINVAV HVFRKAADDT WEPFASGKTS ESGELHGLTT EEEFVEGIYK VEIDTKSYWK ALGISPFHE HAEVVFTSND SGPRRYTIAA LLSPYSYSTT AVVTNPKE

UniProtKB: Transthyretin

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Macromolecule #2: sodium 3,3'-(1E,1'E)-biphenyl-4,4'-diylbis(diazene-2,1-diyl)bis(4...

MacromoleculeName: sodium 3,3'-(1E,1'E)-biphenyl-4,4'-diylbis(diazene-2,1-diyl)bis(4-aminonaphthalene-1-sulfonate)
type: ligand / ID: 2 / Number of copies: 8 / Formula: CGO
Molecular weightTheoretical: 696.663 Da
Chemical component information

ChemComp-CGO:
sodium 3,3'-(1E,1'E)-biphenyl-4,4'-diylbis(diazene-2,1-diyl)bis(4-aminonaphthalene-1-sulfonate)

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Experimental details

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Structure determination

Methodcryo EM
Processinghelical reconstruction
Aggregation statefilament

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Sample preparation

BufferpH: 7
VitrificationCryogen name: ETHANE

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Electron microscopy

MicroscopeTFS KRIOS
Image recordingFilm or detector model: GATAN K3 BIOQUANTUM (6k x 4k) / Average electron dose: 55.0 e/Å2
Electron beamAcceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN
Electron opticsIllumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD / Nominal defocus max: 2.4 µm / Nominal defocus min: 1.0 µm
Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company

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Image processing

Final reconstructionApplied symmetry - Helical parameters - Δz: 4.81 Å
Applied symmetry - Helical parameters - Δ&Phi: -1.31 °
Applied symmetry - Helical parameters - Axial symmetry: C1 (asymmetric)
Resolution.type: BY AUTHOR / Resolution: 3.0 Å / Resolution method: FSC 0.143 CUT-OFF / Software - Name: RELION / Number images used: 71536
CTF correctionType: NONE
Startup modelType of model: PDB ENTRY
PDB model - PDB ID:

9vtw

Final angle assignmentType: NOT APPLICABLE
FSC plot (resolution estimation)

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