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- EMDB-26691: Cardiac amyloid fibrils extracted from a wild-type ATTR amyloidos... -

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Basic information

Entry
Database: EMDB / ID: EMD-26691
TitleCardiac amyloid fibrils extracted from a wild-type ATTR amyloidosis patient
Map dataCardiac amyloid fibrils extracted from a wild-type ATTR amyloidosis patient
Sample
  • Tissue: cardiac amyloid fibril of wild-type transthyretin amyloidosis
    • Protein or peptide: Transthyretin
KeywordsTransthyretin / Amyloidosis / Systemic amyloidosis / ATTR / Cardiac / 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) / hormone binding / purine nucleobase metabolic process / molecular sequestering activity / Non-integrin membrane-ECM interactions / phototransduction, visible light / retinoid metabolic process / Retinoid metabolism and transport ...Defective visual phototransduction due to STRA6 loss of function / negative regulation of glomerular filtration / The canonical retinoid cycle in rods (twilight vision) / hormone binding / purine nucleobase metabolic process / molecular sequestering activity / Non-integrin membrane-ECM interactions / phototransduction, visible light / retinoid metabolic process / Retinoid metabolism and transport / hormone activity / azurophil granule lumen / Amyloid fiber formation / Neutrophil degranulation / protein-containing complex binding / protein-containing complex / extracellular space / 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: 3.43 Å
AuthorsNguyen BA / Saelices L
Funding support United States, 2 items
OrganizationGrant numberCountry
National Institutes of Health/Eunice Kennedy Shriver National Institute of Child Health & Human Development (NIH/NICHD)1DP2HL163810-01 United States
American Heart Association847236 United States
CitationJournal: Commun Biol / Year: 2024
Title: Cryo-EM confirms a common fibril fold in the heart of four patients with ATTRwt amyloidosis
Authors: Nguyen BA / Singh V / Afrin S / Singh P / Pekala M / Ahmed Y / Pedretti R / Canepa J / Lemoff A / Kluve-Beckerman B / Wydorski PM / Chhapra F / Saelices L
History
DepositionApr 19, 2022-
Header (metadata) releaseApr 26, 2023-
Map releaseApr 26, 2023-
UpdateSep 4, 2024-
Current statusSep 4, 2024Processing site: RCSB / Status: Released

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Structure visualization

Supplemental images

emd_26691.png

Downloads & links

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Map

FileDownload / File: emd_26691.map.gz / Format: CCP4 / Size: 64 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)
AnnotationCardiac amyloid fibrils extracted from a wild-type ATTR amyloidosis patient
Projections & slices

Image control

Size
Brightness
Contrast
Others
AxesZ (Sec.)Y (Row.)X (Col.)
1.88 Å/pix.
x 128 pix.
= 240.64 Å		1.88 Å/pix.
x 128 pix.
= 240.64 Å		1.88 Å/pix.
x 128 pix.
= 240.64 Å

Surface

Projections

Slices (1/3)

Slices (1/2)

Slices (2/3)

Images are generated by Spider.

Voxel size
XYZ
EMDB info.1.0591.0591.059
CCP4 map header1.881.881.88
Density

Histogram

Histogram (log scale)
Contour LevelBy AUTHOR: 0.0166
Minimum - Maximum-0.038243648 - 0.06233442
Average (Standard dev.)0.000092646515 (±0.003445523)
SymmetrySpace group: 1
Details

EMDB XML:

Map geometry
Axis orderXYZ
Origin000
Dimensions256256256
Spacing256256256
CellA=B=C: 271.104 Å
α=β=γ: 90.0 °

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Supplemental data

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Mask #1

Fileemd_26691_msk_1.map
Projections & Slices
AxesZYX

Projections

Slices (1/2)
Density Histograms

Histogram

Histogram (log scale)

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Additional map: postprocessed volume of the main map using the provided mask

Fileemd_26691_additional_1.map
Annotationpostprocessed volume of the main map using the provided mask
Projections & Slices
AxesZYX

Projections

Slices (1/2)
Density Histograms

Histogram

Histogram (log scale)

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Half map: half map 1

Fileemd_26691_half_map_1.map
Annotationhalf map 1
Projections & Slices
AxesZYX

Projections

Slices (1/2)
Density Histograms

Histogram

Histogram (log scale)

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Half map: half map 2

Fileemd_26691_half_map_2.map
Annotationhalf map 2
Projections & Slices
AxesZYX

Projections

Slices (1/2)
Density Histograms

Histogram

Histogram (log scale)

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Sample components

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Entire : cardiac amyloid fibril of wild-type transthyretin amyloidosis

EntireName: cardiac amyloid fibril of wild-type transthyretin amyloidosis
Components
  • Tissue: cardiac amyloid fibril of wild-type transthyretin amyloidosis
    • Protein or peptide: Transthyretin

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Supramolecule #1: cardiac amyloid fibril of wild-type transthyretin amyloidosis

SupramoleculeName: cardiac amyloid fibril of wild-type transthyretin amyloidosis
type: tissue / ID: 1 / Parent: 0 / Macromolecule list: all
Source (natural)Organism: Homo sapiens (human) / Organ: Heart / Tissue: Cardiac

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Macromolecule #1: Transthyretin

MacromoleculeName: Transthyretin / type: protein_or_peptide / ID: 1 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
SequenceString:
MASHRLLLLC LAGLVFVSEA GPTGTGESKC PLMVKVLDAV RGSPAINVAV HVFRKAADDT WEPFASGKTS ESGELHGLTT EEEFVEGIYK VEIDTKSYWK ALGISPFHEH AEVVFTANDS GPRRYTIAAL LSPYSYSTTA VVTNPKE

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Experimental details

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Structure determination

Methodcryo EM
Processinghelical reconstruction
Aggregation statehelical array

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Sample preparation

BufferpH: 7
GridModel: Quantifoil R1.2/1.3 / Support film - Material: CARBON / Support film - topology: HOLEY / Support film - Film thickness: 12 / Pretreatment - Type: GLOW DISCHARGE / Pretreatment - Time: 90 sec. / Pretreatment - Atmosphere: AIR
VitrificationCryogen name: ETHANE / Chamber humidity: 100 % / Chamber temperature: 295.15 K / Instrument: FEI VITROBOT MARK IV

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Electron microscopy

MicroscopeFEI TITAN KRIOS
Image recordingFilm or detector model: GATAN K3 (6k x 4k) / Average electron dose: 40.0 e/Å2
Electron beamAcceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN
Electron opticsIllumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD / Cs: 2.7 mm / Nominal defocus max: 2.1 µm / Nominal defocus min: 1.5 µm
Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company

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Image processing

Final reconstructionApplied symmetry - Helical parameters - Δz: 4.79 Å
Applied symmetry - Helical parameters - Δ&Phi: -1.26 °
Applied symmetry - Helical parameters - Axial symmetry: C1 (asymmetric)
Resolution.type: BY AUTHOR / Resolution: 3.43 Å / Resolution method: FSC 0.143 CUT-OFF / Software - Name: RELION (ver. 3.1) / Number images used: 11420
Startup modelType of model: OTHER / Details: Featureless cylinder
Final angle assignmentType: NOT APPLICABLE / Software - Name: RELION (ver. 3.1)
FSC plot (resolution estimation)

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