+Open data
-Basic information
Entry | Database: EMDB / ID: EMD-30556 | |||||||||
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Title | Cryo-EM structure of human DUOX1-DUOXA1 in high-calcium state | |||||||||
Map data | composite map after multibody refinement | |||||||||
Sample |
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Keywords | DUOX / DUOXA / NOX / NADPH / FAD / Haem / ELECTRON TRANSPORT | |||||||||
Function / homology | Function and homology information NADH oxidase H202-forming activity / regulation of thyroid hormone generation / NADPH oxidase H202-forming activity / NAD(P)H oxidase (H2O2-forming) / cuticle development / Thyroxine biosynthesis / positive regulation of hydrogen peroxide biosynthetic process / superoxide-generating NAD(P)H oxidase activity / hormone biosynthetic process / NAD(P)H oxidase H2O2-forming activity ...NADH oxidase H202-forming activity / regulation of thyroid hormone generation / NADPH oxidase H202-forming activity / NAD(P)H oxidase (H2O2-forming) / cuticle development / Thyroxine biosynthesis / positive regulation of hydrogen peroxide biosynthetic process / superoxide-generating NAD(P)H oxidase activity / hormone biosynthetic process / NAD(P)H oxidase H2O2-forming activity / NADPH oxidase complex / thyroid hormone generation / superoxide anion generation / hydrogen peroxide biosynthetic process / positive regulation of cell motility / hydrogen peroxide metabolic process / positive regulation of wound healing / cell leading edge / Oxidoreductases; Acting on a peroxide as acceptor; Peroxidases / response to cAMP / positive regulation of neuron differentiation / hydrogen peroxide catabolic process / peroxidase activity / cytokine-mediated signaling pathway / defense response / protein localization / protein transport / NADP binding / regulation of inflammatory response / response to oxidative stress / apical plasma membrane / calcium ion binding / heme binding / endoplasmic reticulum membrane / enzyme binding / cell surface / endoplasmic reticulum / membrane / plasma membrane Similarity search - Function | |||||||||
Biological species | Homo sapiens (human) | |||||||||
Method | single particle reconstruction / cryo EM / Resolution: 2.6 Å | |||||||||
Authors | Chen L / Wu JX | |||||||||
Funding support | China, 2 items
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Citation | Journal: Nat Commun / Year: 2021 Title: Structures of human dual oxidase 1 complex in low-calcium and high-calcium states. Authors: Jing-Xiang Wu / Rui Liu / Kangcheng Song / Lei Chen / Abstract: Dual oxidases (DUOXs) produce hydrogen peroxide by transferring electrons from intracellular NADPH to extracellular oxygen. They are involved in many crucial biological processes and human diseases, ...Dual oxidases (DUOXs) produce hydrogen peroxide by transferring electrons from intracellular NADPH to extracellular oxygen. They are involved in many crucial biological processes and human diseases, especially in thyroid diseases. DUOXs are protein complexes co-assembled from the catalytic DUOX subunits and the auxiliary DUOXA subunits and their activities are regulated by intracellular calcium concentrations. Here, we report the cryo-EM structures of human DUOX1-DUOXA1 complex in both high-calcium and low-calcium states. These structures reveal the DUOX1 complex is a symmetric 2:2 hetero-tetramer stabilized by extensive inter-subunit interactions. Substrate NADPH and cofactor FAD are sandwiched between transmembrane domain and the cytosolic dehydrogenase domain of DUOX. In the presence of calcium ions, intracellular EF-hand modules might enhance the catalytic activity of DUOX by stabilizing the dehydrogenase domain in a conformation that allows electron transfer. | |||||||||
History |
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-Structure visualization
Movie |
Movie viewer |
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Structure viewer | EM map: SurfViewMolmilJmol/JSmol |
Supplemental images |
-Downloads & links
-EMDB archive
Map data | emd_30556.map.gz | 2.5 MB | EMDB map data format | |
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Header (meta data) | emd-30556-v30.xml emd-30556.xml | 18.3 KB 18.3 KB | Display Display | EMDB header |
Images | emd_30556.png | 106.8 KB | ||
Filedesc metadata | emd-30556.cif.gz | 6.9 KB | ||
Others | emd_30556_additional_1.map.gz emd_30556_additional_2.map.gz | 7.7 MB 20.5 MB | ||
Archive directory | http://ftp.pdbj.org/pub/emdb/structures/EMD-30556 ftp://ftp.pdbj.org/pub/emdb/structures/EMD-30556 | HTTPS FTP |
-Related structure data
Related structure data | 7d3fMC 7d3eC M: atomic model generated by this map C: citing same article (ref.) |
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Similar structure data |
-Links
EMDB pages | EMDB (EBI/PDBe) / EMDataResource |
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Related items in Molecule of the Month |
-Map
File | Download / File: emd_30556.map.gz / Format: CCP4 / Size: 22.2 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Annotation | composite map after multibody refinement | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Projections & slices | Image control
Images are generated by Spider. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Voxel size | X=Y=Z: 1.045 Å | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Density |
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Symmetry | Space group: 1 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Details | EMDB XML:
CCP4 map header:
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-Supplemental data
-Additional map: #1
File | emd_30556_additional_1.map | ||||||||||||
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Projections & Slices |
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Density Histograms |
-Additional map: consensus map by cryosparc
File | emd_30556_additional_2.map | ||||||||||||
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Annotation | consensus map by cryosparc | ||||||||||||
Projections & Slices |
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Density Histograms |
-Sample components
+Entire : human DUOX1-DUOXA1 complex
+Supramolecule #1: human DUOX1-DUOXA1 complex
+Macromolecule #1: Dual oxidase 1
+Macromolecule #2: Isoform 2 of Dual oxidase maturation factor 1
+Macromolecule #4: PROTOPORPHYRIN IX CONTAINING FE
+Macromolecule #5: NADPH DIHYDRO-NICOTINAMIDE-ADENINE-DINUCLEOTIDE PHOSPHATE
+Macromolecule #6: FLAVIN-ADENINE DINUCLEOTIDE
+Macromolecule #7: CALCIUM ION
+Macromolecule #8: 2-acetamido-2-deoxy-beta-D-glucopyranose
+Macromolecule #9: SODIUM ION
+Macromolecule #10: water
-Experimental details
-Structure determination
Method | cryo EM |
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Processing | single particle reconstruction |
Aggregation state | particle |
-Sample preparation
Buffer | pH: 7 |
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Vitrification | Cryogen name: ETHANE |
-Electron microscopy
Microscope | FEI TITAN KRIOS |
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Image recording | Film or detector model: GATAN K2 SUMMIT (4k x 4k) / Average electron dose: 48.0 e/Å2 |
Electron beam | Acceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN |
Electron optics | Illumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD |
Experimental equipment | Model: Titan Krios / Image courtesy: FEI Company |
-Image processing
Startup model | Type of model: OTHER |
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Final reconstruction | Resolution.type: BY AUTHOR / Resolution: 2.6 Å / Resolution method: FSC 0.143 CUT-OFF / Number images used: 125948 |
Initial angle assignment | Type: MAXIMUM LIKELIHOOD |
Final angle assignment | Type: MAXIMUM LIKELIHOOD |