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- EMDB-26354: Cryo-EM Structure of Ferritin -

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Basic information

Entry
Database: EMDB / ID: EMD-26354
TitleCryo-EM Structure of Ferritin
Map dataUnsharpened map of Ferritin from bos taurus
Sample
  • Complex: Ferritin
    • Protein or peptide: Ferritin heavy chain
  • Ligand: FE (III) ION
Keywordsferritin / FTH1 / METAL BINDING PROTEIN
Function / homology
Function and homology information


Iron uptake and transport / Neutrophil degranulation / negative regulation of ferroptosis / ferroxidase / ferroxidase activity / ferric iron binding / autophagosome / iron ion transport / ferrous iron binding / cytoplasmic vesicle ...Iron uptake and transport / Neutrophil degranulation / negative regulation of ferroptosis / ferroxidase / ferroxidase activity / ferric iron binding / autophagosome / iron ion transport / ferrous iron binding / cytoplasmic vesicle / intracellular iron ion homeostasis / lysosome / immune response / negative regulation of cell population proliferation / cytoplasm
Similarity search - Function
Ferritin iron-binding regions signature 1. / Ferritin iron-binding regions signature 2. / Ferritin, conserved site / Ferritin / Ferritin-like diiron domain / Ferritin-like diiron domain profile. / Ferritin/DPS protein domain / Ferritin-like domain / Ferritin-like / Ferritin-like superfamily
Similarity search - Domain/homology
Ferritin heavy chain
Similarity search - Component
Biological speciesBos taurus (domestic cattle)
Methodsingle particle reconstruction / cryo EM / Resolution: 2.67 Å
AuthorsMorgan CE / Zhang Z / Yu EW
Funding support United States, 1 items
OrganizationGrant numberCountry
National Institutes of Health/National Institute Of Allergy and Infectious Diseases (NIH/NIAID) United States
CitationJournal: Cell Rep / Year: 2022
Title: Toward structural-omics of the bovine retinal pigment epithelium.
Authors: Christopher E Morgan / Zhemin Zhang / Masaru Miyagi / Marcin Golczak / Edward W Yu /
Abstract: The use of an integrated systems biology approach to investigate tissues and organs has been thought to be impracticable in the field of structural biology, where the techniques mainly focus on ...The use of an integrated systems biology approach to investigate tissues and organs has been thought to be impracticable in the field of structural biology, where the techniques mainly focus on determining the structure of a particular biomacromolecule of interest. Here, we report the use of cryoelectron microscopy (cryo-EM) to define the composition of a raw bovine retinal pigment epithelium (RPE) lysate. From this sample, we simultaneously identify and solve cryo-EM structures of seven different RPE enzymes whose functions affect neurotransmitter recycling, iron metabolism, gluconeogenesis, glycolysis, axonal development, and energy homeostasis. Interestingly, dysfunction of these important proteins has been directly linked to several neurodegenerative disorders, including Huntington's disease, amyotrophic lateral sclerosis (ALS), Parkinson's disease, Alzheimer's disease, and schizophrenia. Our work underscores the importance of cryo-EM in facilitating tissue and organ proteomics at the atomic level.
History
DepositionMar 2, 2022-
Header (metadata) releaseDec 14, 2022-
Map releaseDec 14, 2022-
UpdateJun 12, 2024-
Current statusJun 12, 2024Processing site: RCSB / Status: Released

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Structure visualization

Supplemental images

emd_26354.png

Downloads & links

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Map

FileDownload / File: emd_26354.map.gz / Format: CCP4 / Size: 64 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)
AnnotationUnsharpened map of Ferritin from bos taurus
Projections & slices

Image control

Size
Brightness
Contrast
Others
AxesZ (Sec.)Y (Row.)X (Col.)
1.07 Å/pix.
x 256 pix.
= 273.92 Å		1.07 Å/pix.
x 256 pix.
= 273.92 Å		1.07 Å/pix.
x 256 pix.
= 273.92 Å

Surface

Projections

Slices (1/3)

Slices (1/2)

Slices (2/3)

Images are generated by Spider.

Voxel sizeX=Y=Z: 1.07 Å
Density

Histogram

Histogram (log scale)
Contour LevelBy AUTHOR: 0.2
Minimum - Maximum-1.7712557 - 2.760348
Average (Standard dev.)0.000102640835 (±0.13315287)
SymmetrySpace group: 1
Details

EMDB XML:

Map geometry
Axis orderXYZ
Origin000
Dimensions256256256
Spacing256256256
CellA=B=C: 273.92 Å
α=β=γ: 90.0 °

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Supplemental data

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Additional map: Unsharpened map of Ferritin from bos taurus

Fileemd_26354_additional_1.map
AnnotationUnsharpened map of Ferritin from bos taurus
Projections & Slices
AxesZYX

Projections

Slices (1/2)
Density Histograms

Histogram

Histogram (log scale)

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Half map: Half-map A

Fileemd_26354_half_map_1.map
AnnotationHalf-map A
Projections & Slices
AxesZYX

Projections

Slices (1/2)
Density Histograms

Histogram

Histogram (log scale)

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Half map: Half-map B

Fileemd_26354_half_map_2.map
AnnotationHalf-map B
Projections & Slices
AxesZYX

Projections

Slices (1/2)
Density Histograms

Histogram

Histogram (log scale)

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Sample components

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Entire : Ferritin

EntireName: Ferritin
Components
  • Complex: Ferritin
    • Protein or peptide: Ferritin heavy chain
  • Ligand: FE (III) ION

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Supramolecule #1: Ferritin

SupramoleculeName: Ferritin / type: complex / ID: 1 / Parent: 0 / Macromolecule list: #1
Source (natural)Organism: Bos taurus (domestic cattle)

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Macromolecule #1: Ferritin heavy chain

MacromoleculeName: Ferritin heavy chain / type: protein_or_peptide / ID: 1 / Number of copies: 24 / Enantiomer: LEVO / EC number: ferroxidase
Source (natural)Organism: Bos taurus (domestic cattle)
Molecular weightTheoretical: 21.081572 KDa
SequenceString:
MTTASPSQVR QNYHQDSEAA INRQINLELY ASYVYLSMSY YFDRDDVALK NFAKYFLHQS HEEREHAERL MKLQNQRGGR IFLQDIKKP DRDDWENGLT AMECALCLER SVNQSLLELH KLATEKNDPH LCDFIETHYL NEQVEAIKEL GDHITNLRKM G APGSGMAE YLFDKHTLGH SES

UniProtKB: Ferritin heavy chain

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Macromolecule #2: FE (III) ION

MacromoleculeName: FE (III) ION / type: ligand / ID: 2 / Number of copies: 24 / Formula: FE
Molecular weightTheoretical: 55.845 Da

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Experimental details

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Structure determination

Methodcryo EM
Processingsingle particle reconstruction
Aggregation stateparticle

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Sample preparation

BufferpH: 7.5
VitrificationCryogen name: ETHANE

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Electron microscopy

MicroscopeTFS KRIOS
Image recordingFilm or detector model: GATAN K3 (6k x 4k) / Average electron dose: 37.0 e/Å2
Electron beamAcceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN
Electron opticsIllumination mode: SPOT SCAN / Imaging mode: BRIGHT FIELD / Nominal defocus max: 2.5 µm / Nominal defocus min: 1.0 µm
Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company

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Image processing

Startup modelType of model: NONE
Final reconstructionResolution.type: BY AUTHOR / Resolution: 2.67 Å / Resolution method: FSC 0.143 CUT-OFF / Software - Name: cryoSPARC (ver. v3) / Number images used: 1356
Initial angle assignmentType: MAXIMUM LIKELIHOOD
Final angle assignmentType: MAXIMUM LIKELIHOOD
FSC plot (resolution estimation)

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