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- EMDB-28225: Cryo-EM structure of human catalase -

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Basic information

Entry
Database: EMDB / ID: EMD-28225
TitleCryo-EM structure of human catalase
Map data
Sample
  • Complex: H6PD
    • Protein or peptide: Catalase
  • Ligand: PROTOPORPHYRIN IX CONTAINING FE
  • Ligand: NADPH DIHYDRO-NICOTINAMIDE-ADENINE-DINUCLEOTIDE PHOSPHATE
  • Ligand: water
KeywordsCatalase / OXIDOREDUCTASE
Function / homology
Function and homology information


response to amitrole / response to phenylpropanoid / aminoacylase activity / catalase complex / cellular detoxification of hydrogen peroxide / response to inactivity / response to ozone / oxidoreductase activity, acting on peroxide as acceptor / response to L-ascorbic acid / catalase ...response to amitrole / response to phenylpropanoid / aminoacylase activity / catalase complex / cellular detoxification of hydrogen peroxide / response to inactivity / response to ozone / oxidoreductase activity, acting on peroxide as acceptor / response to L-ascorbic acid / catalase / response to light intensity / UV protection / response to fatty acid / response to vitamin A / ureteric bud development / catalase activity / peroxisomal membrane / response to vitamin E / Detoxification of Reactive Oxygen Species / antioxidant activity / peroxisomal matrix / response to cadmium ion / response to hyperoxia / FOXO-mediated transcription of oxidative stress, metabolic and neuronal genes / Mitochondrial unfolded protein response (UPRmt) / response to activity / hydrogen peroxide catabolic process / response to insulin / response to reactive oxygen species / Peroxisomal protein import / response to lead ion / cellular response to growth factor stimulus / osteoblast differentiation / NADP binding / response to estradiol / peroxisome / secretory granule lumen / response to hypoxia / ficolin-1-rich granule lumen / response to ethanol / response to xenobiotic stimulus / focal adhesion / heme binding / negative regulation of apoptotic process / Neutrophil degranulation / enzyme binding / protein homodimerization activity / protein-containing complex / mitochondrion / extracellular exosome / extracellular region / membrane / identical protein binding / cytosol
Similarity search - Function
Catalase, clade 3 / Catalase, mono-functional, haem-containing, clades 1 and 3 / Catalase haem-binding site / Catalase proximal heme-ligand signature. / Catalase / Catalase immune-responsive domain / Catalase-related immune-responsive / Catalase active site / Catalase proximal active site signature. / Catalase core domain ...Catalase, clade 3 / Catalase, mono-functional, haem-containing, clades 1 and 3 / Catalase haem-binding site / Catalase proximal heme-ligand signature. / Catalase / Catalase immune-responsive domain / Catalase-related immune-responsive / Catalase active site / Catalase proximal active site signature. / Catalase core domain / Catalase, mono-functional, haem-containing / Catalase / catalase family profile. / Catalase superfamily
Similarity search - Domain/homology
Biological speciesHomo sapiens (human)
Methodsingle particle reconstruction / cryo EM / Resolution: 2.27 Å
AuthorsSu CC / Lyu M
Funding support United States, 1 items
OrganizationGrant numberCountry
National Institutes of Health/National Institute Of Allergy and Infectious Diseases (NIH/NIAID) United States
CitationJournal: To Be Published
Title: Cryo-EM structure of human catalase
Authors: Su C-C / Yu E
History
DepositionSep 23, 2022-
Header (metadata) releaseOct 4, 2023-
Map releaseOct 4, 2023-
UpdateAug 12, 2026-
Current statusAug 12, 2026Processing site: RCSB / Status: Released

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Structure visualization

Supplemental images

emd_28225.png

Downloads & links

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Map

FileDownload / File: emd_28225.map.gz / Format: CCP4 / Size: 244.1 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)
Projections & slices

Image control

Size
Brightness
Contrast
Others
AxesZ (Sec.)Y (Row.)X (Col.)
1.08 Å/pix.
x 400 pix.
= 432. Å		1.08 Å/pix.
x 400 pix.
= 432. Å		1.08 Å/pix.
x 400 pix.
= 432. Å

Surface

Projections

Slices (1/3)

Slices (1/2)

Slices (2/3)

Images are generated by Spider.

Voxel sizeX=Y=Z: 1.08 Å
Density

Histogram

Histogram (log scale)
Contour LevelBy AUTHOR: 0.5
Minimum - Maximum-3.0852559 - 5.8811007
Average (Standard dev.)0.000045755136 (±0.11269894)
SymmetrySpace group: 1
Details

EMDB XML:

Map geometry
Axis orderXYZ
Origin000
Dimensions400400400
Spacing400400400
CellA=B=C: 432.00003 Å
α=β=γ: 90.0 °

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Supplemental data

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Additional map: Unsharpen map

Fileemd_28225_additional_1.map
AnnotationUnsharpen map
Projections & Slices
AxesZYX

Projections

Slices (1/2)
Density Histograms

Histogram

Histogram (log scale)

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Half map: #2

Fileemd_28225_half_map_1.map
Projections & Slices
AxesZYX

Projections

Slices (1/2)
Density Histograms

Histogram

Histogram (log scale)

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Half map: #1

Fileemd_28225_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 : H6PD

EntireName: H6PD
Components
  • Complex: H6PD
    • Protein or peptide: Catalase
  • Ligand: PROTOPORPHYRIN IX CONTAINING FE
  • Ligand: NADPH DIHYDRO-NICOTINAMIDE-ADENINE-DINUCLEOTIDE PHOSPHATE
  • Ligand: water

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Supramolecule #1: H6PD

SupramoleculeName: H6PD / type: complex / ID: 1 / Parent: 0 / Macromolecule list: #1
Source (natural)Organism: Homo sapiens (human)

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Macromolecule #1: Catalase

MacromoleculeName: Catalase / type: protein_or_peptide / ID: 1 / Number of copies: 4 / Enantiomer: LEVO / EC number: catalase
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 59.836996 KDa
SequenceString: MADSRDPASD QMQHWKEQRA AQKADVLTTG AGNPVGDKLN VITVGPRGPL LVQDVVFTDE MAHFDRERIP ERVVHAKGAG AFGYFEVTH DITKYSKAKV FEHIGKKTPI AVRFSTVAGE SGSADTVRDP RGFAVKFYTE DGNWDLVGNN TPIFFIRDPI L FPSFIHSQ ...String:
MADSRDPASD QMQHWKEQRA AQKADVLTTG AGNPVGDKLN VITVGPRGPL LVQDVVFTDE MAHFDRERIP ERVVHAKGAG AFGYFEVTH DITKYSKAKV FEHIGKKTPI AVRFSTVAGE SGSADTVRDP RGFAVKFYTE DGNWDLVGNN TPIFFIRDPI L FPSFIHSQ KRNPQTHLKD PDMVWDFWSL RPESLHQVSF LFSDRGIPDG HRHMNGYGSH TFKLVNANGE AVYCKFHYKT DQ GIKNLSV EDAARLSQED PDYGIRDLFN AIATGKYPSW TFYIQVMTFN QAETFPFNPF DLTKVWPHKD YPLIPVGKLV LNR NPVNYF AEVEQIAFDP SNMPPGIEAS PDKMLQGRLF AYPDTHRHRL GPNYLHIPVN CPYRARVANY QRDGPMCMQD NQGG APNYY PNSFGAPEQQ PSALEHSIQY SGEVRRFNTA NDDNVTQVRA FYVNVLNEEQ RKRLCENIAG HLKDAQIFIQ KKAVK NFTE VHPDYGSHIQ ALLDKYNAEK PKNAIHTFVQ SGSHLAAREK ANL

UniProtKB: Catalase

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Macromolecule #2: PROTOPORPHYRIN IX CONTAINING FE

MacromoleculeName: PROTOPORPHYRIN IX CONTAINING FE / type: ligand / ID: 2 / Number of copies: 4 / Formula: HEM
Molecular weightTheoretical: 616.487 Da
Chemical component information

ChemComp-HEM:
PROTOPORPHYRIN IX CONTAINING FE

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Macromolecule #3: NADPH DIHYDRO-NICOTINAMIDE-ADENINE-DINUCLEOTIDE PHOSPHATE

MacromoleculeName: NADPH DIHYDRO-NICOTINAMIDE-ADENINE-DINUCLEOTIDE PHOSPHATE
type: ligand / ID: 3 / Number of copies: 4 / Formula: NDP
Molecular weightTheoretical: 745.421 Da
Chemical component information

ChemComp-NDP:
NADPH DIHYDRO-NICOTINAMIDE-ADENINE-DINUCLEOTIDE PHOSPHATE

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Macromolecule #4: water

MacromoleculeName: water / type: ligand / ID: 4 / Number of copies: 1015 / Formula: HOH
Molecular weightTheoretical: 18.015 Da
Chemical component information

ChemComp-HOH:
WATER

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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

Concentration0.5 mg/mL
BufferpH: 7.5
VitrificationCryogen name: ETHANE / Chamber humidity: 100 % / Chamber temperature: 277 K / Instrument: FEI VITROBOT MARK IV
DetailsThis is from a heterogeneous and impure protein sample.

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Electron microscopy

MicroscopeFEI TITAN KRIOS
Image recordingFilm or detector model: GATAN K3 BIOQUANTUM (6k x 4k) / Average electron dose: 29.0 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

CTF correctionSoftware - Name: cryoSPARC / Type: PHASE FLIPPING AND AMPLITUDE CORRECTION
Startup modelType of model: EMDB MAP
EMDB ID:

23430
EMDB Unreleased entry

Final reconstructionApplied symmetry - Point group: D2 (2x2 fold dihedral) / Resolution.type: BY AUTHOR / Resolution: 2.27 Å / Resolution method: FSC 0.143 CUT-OFF / Number images used: 157907
Initial angle assignmentType: ANGULAR RECONSTITUTION
Final angle assignmentType: ANGULAR RECONSTITUTION
Final 3D classificationSoftware - Name: cryoSPARC
FSC plot (resolution estimation)

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Atomic model buiding 1

Initial modelPDB ID:

1dgf


Chain - Source name: PDB / Chain - Initial model type: experimental model
RefinementSpace: REAL / Protocol: RIGID BODY FIT
Output model

PDB-8el9:
Cryo-EM structure of human catalase

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