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- EMDB-32933: Structure of IgG-Fc hexamer -

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Basic information

Entry
Database: EMDB / ID: EMD-32933
TitleStructure of IgG-Fc hexamer
Map datahexameric IgG-Fc
Sample
  • Complex: IgG-Fc hexamer
    • Protein or peptide: Immunoglobulin gamma-1 heavy chain
KeywordsIgG-Fc hexamer / STRUCTURAL PROTEIN
Function / homology
Function and homology information


immunoglobulin complex / adaptive immune response / extracellular region / plasma membrane
Similarity search - Function
: / Immunoglobulin V-Type / Immunoglobulin V-set domain / Immunoglobulin V-set domain / Immunoglobulin/major histocompatibility complex, conserved site / Immunoglobulins and major histocompatibility complex proteins signature. / Immunoglobulin subtype / Immunoglobulin / Immunoglobulin C-Type / Immunoglobulin C1-set ...: / Immunoglobulin V-Type / Immunoglobulin V-set domain / Immunoglobulin V-set domain / Immunoglobulin/major histocompatibility complex, conserved site / Immunoglobulins and major histocompatibility complex proteins signature. / Immunoglobulin subtype / Immunoglobulin / Immunoglobulin C-Type / Immunoglobulin C1-set / Immunoglobulin C1-set domain / Ig-like domain profile. / Immunoglobulin-like domain / Immunoglobulin-like domain superfamily / Immunoglobulin-like fold
Similarity search - Domain/homology
Immunoglobulin gamma-1 heavy chain
Similarity search - Component
Biological speciesHomo sapiens (human)
Methodsingle particle reconstruction / cryo EM / Resolution: 3.7 Å
AuthorsYuan D / Weixin Y
Funding support China, 1 items
OrganizationGrant numberCountry
Other private China
CitationJournal: To Be Published
Title: Structure of IgG-Fc hexamer
Authors: Yuan D / Weixin Y / Xiao F
History
DepositionFeb 23, 2022-
Header (metadata) releaseMar 1, 2023-
Map releaseMar 1, 2023-
UpdateJul 2, 2025-
Current statusJul 2, 2025Processing site: PDBj / Status: Released

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Structure visualization

Supplemental images

emd_32933.png

Downloads & links

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Map

FileDownload / File: emd_32933.map.gz / Format: CCP4 / Size: 52.7 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)
Annotationhexameric IgG-Fc
Projections & slices

Image control

Size
Brightness
Contrast
Others
AxesZ (Sec.)Y (Row.)X (Col.)
0.85 Å/pix.
x 240 pix.
= 204. Å		0.85 Å/pix.
x 240 pix.
= 204. Å		0.85 Å/pix.
x 240 pix.
= 204. Å

Surface

Projections

Slices (1/3)

Slices (1/2)

Slices (2/3)

Images are generated by Spider.

Voxel sizeX=Y=Z: 0.85 Å
Density

Histogram

Histogram (log scale)
Contour LevelBy AUTHOR: 0.0127
Minimum - Maximum-0.080132596 - 0.11687898
Average (Standard dev.)0.00020086506 (±0.0051963795)
SymmetrySpace group: 1
Details

EMDB XML:

Map geometry
Axis orderXYZ
Origin000
Dimensions240240240
Spacing240240240
CellA=B=C: 204.0 Å
α=β=γ: 90.0 °

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Supplemental data

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Sample components

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Entire : IgG-Fc hexamer

EntireName: IgG-Fc hexamer
Components
  • Complex: IgG-Fc hexamer
    • Protein or peptide: Immunoglobulin gamma-1 heavy chain

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Supramolecule #1: IgG-Fc hexamer

SupramoleculeName: IgG-Fc hexamer / type: complex / ID: 1 / Parent: 0 / Macromolecule list: all
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 300 KDa

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Macromolecule #1: Immunoglobulin gamma-1 heavy chain

MacromoleculeName: Immunoglobulin gamma-1 heavy chain / type: protein_or_peptide / ID: 1 / Number of copies: 12 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 27.568195 KDa
Recombinant expressionOrganism: Mammalia (mammals)
SequenceString: DKTHTCPPCP APELLGGPSV FLFPPKPKDT LMISRTPEVT CVVVDVSHED PEVKFNWYVD GVEVHNAKTK PREEQYNSTY RVVSVLTVC HQDWLNGKEY KCKVSNKALP APIEKTISKA KGQPREPQVY TLPPSREEMT KNQVSLTCLV KGFYPSDIAV E WESNGQPE ...String:
DKTHTCPPCP APELLGGPSV FLFPPKPKDT LMISRTPEVT CVVVDVSHED PEVKFNWYVD GVEVHNAKTK PREEQYNSTY RVVSVLTVC HQDWLNGKEY KCKVSNKALP APIEKTISKA KGQPREPQVY TLPPSREEMT KNQVSLTCLV KGFYPSDIAV E WESNGQPE NNYKTTPPVL DSDGSFFLYS KLTVDKSRWQ QGNVFSCSVM HEALHNHYTQ KSLDKSTGKP TLYNVSLIMS DT GGTCY

UniProtKB: Immunoglobulin gamma-1 heavy chain

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Experimental details

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Structure determination

Methodcryo EM
Processingsingle particle reconstruction
Aggregation state3D array

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Sample preparation

Concentration1.93 mg/mL
BufferpH: 7.5
VitrificationCryogen name: ETHANE

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Electron microscopy

MicroscopeFEI TITAN KRIOS
Image recordingFilm or detector model: GATAN K3 (6k x 4k) / Average electron dose: 1.1 e/Å2
Electron beamAcceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN
Electron opticsIllumination mode: FLOOD BEAM / Imaging mode: DIFFRACTION / Nominal defocus max: 1.9000000000000001 µm / Nominal defocus min: 1.1 µm
Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company

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Image processing

CTF correctionType: PHASE FLIPPING AND AMPLITUDE CORRECTION
Startup modelType of model: PDB ENTRY
PDB model - PDB ID:

1hzh

Final reconstructionResolution.type: BY AUTHOR / Resolution: 3.7 Å / Resolution method: FSC 0.143 CUT-OFF / Number images used: 300561
Initial angle assignmentType: ANGULAR RECONSTITUTION
Final angle assignmentType: ANGULAR RECONSTITUTION

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