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Yorodumi- PDB-6wxr: CryoEM structure of mouse DUOX1-DUOXA1 complex in the absence of NADPH -
+Open data
-Basic information
Entry | Database: PDB / ID: 6wxr | ||||||
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Title | CryoEM structure of mouse DUOX1-DUOXA1 complex in the absence of NADPH | ||||||
Components | (Dual oxidase ...) x 2 | ||||||
Keywords | MEMBRANE PROTEIN / NADPH oxidase / ROS production | ||||||
Function / homology | Function and homology information regulation of thyroid hormone generation / Thyroxine biosynthesis / NAD(P)H oxidase (H2O2-forming) / cuticle development / 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 ...regulation of thyroid hormone generation / Thyroxine biosynthesis / NAD(P)H oxidase (H2O2-forming) / cuticle development / 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 / response to cAMP / positive regulation of neuron differentiation / reactive oxygen species metabolic process / peroxidase activity / cytokine-mediated signaling pathway / defense response / positive regulation of reactive oxygen species metabolic process / protein transport / regulation of inflammatory response / response to oxidative stress / apical plasma membrane / calcium ion binding / heme binding / endoplasmic reticulum membrane / cell surface / endoplasmic reticulum / membrane / plasma membrane Similarity search - Function | ||||||
Biological species | Mus musculus (house mouse) | ||||||
Method | ELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.2 Å | ||||||
Authors | Sun, J. | ||||||
Funding support | United States, 1items
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Citation | Journal: Nat Struct Mol Biol / Year: 2020 Title: Structures of mouse DUOX1-DUOXA1 provide mechanistic insights into enzyme activation and regulation. Authors: Ji Sun / Abstract: DUOX1, an NADPH oxidase family member, catalyzes the production of hydrogen peroxide. DUOX1 is expressed in various tissues, including the thyroid and respiratory tract, and plays a crucial role in ...DUOX1, an NADPH oxidase family member, catalyzes the production of hydrogen peroxide. DUOX1 is expressed in various tissues, including the thyroid and respiratory tract, and plays a crucial role in processes such as thyroid hormone biosynthesis and innate host defense. DUOX1 co-assembles with its maturation factor DUOXA1 to form an active enzyme complex. However, the molecular mechanisms for activation and regulation of DUOX1 remain mostly unclear. Here, I present cryo-EM structures of the mammalian DUOX1-DUOXA1 complex, in the absence and presence of substrate NADPH, as well as DUOX1-DUOXA1 in an unexpected dimer-of-dimers configuration. These structures reveal atomic details of the DUOX1-DUOXA1 interaction, a lipid-mediated NADPH-binding pocket and the electron transfer path. Furthermore, biochemical and structural analyses indicate that the dimer-of-dimers configuration represents an inactive state of DUOX1-DUOXA1, suggesting an oligomerization-dependent regulatory mechanism. Together, my work provides structural bases for DUOX1-DUOXA1 activation and regulation. | ||||||
History |
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-Structure visualization
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Structure viewer | Molecule: MolmilJmol/JSmol |
-Downloads & links
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PDBx/mmCIF format | 6wxr.cif.gz | 262.9 KB | Display | PDBx/mmCIF format |
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PDB format | pdb6wxr.ent.gz | 194.9 KB | Display | PDB format |
PDBx/mmJSON format | 6wxr.json.gz | Tree view | PDBx/mmJSON format | |
Others | Other downloads |
-Validation report
Summary document | 6wxr_validation.pdf.gz | 1.1 MB | Display | wwPDB validaton report |
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Full document | 6wxr_full_validation.pdf.gz | 1.2 MB | Display | |
Data in XML | 6wxr_validation.xml.gz | 44.7 KB | Display | |
Data in CIF | 6wxr_validation.cif.gz | 64.4 KB | Display | |
Arichive directory | https://data.pdbj.org/pub/pdb/validation_reports/wx/6wxr ftp://data.pdbj.org/pub/pdb/validation_reports/wx/6wxr | HTTPS FTP |
-Related structure data
Related structure data | 21962MC 6wxuC 6wxvC M: map data used to model this data C: citing same article (ref.) |
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Similar structure data |
-Links
-Assembly
Deposited unit |
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1 |
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-Components
-Dual oxidase ... , 2 types, 2 molecules AB
#1: Protein | Mass: 175739.812 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) Mus musculus (house mouse) / Gene: Duox1 / Production host: Homo sapiens (human) / References: UniProt: A2AQ92 |
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#2: Protein | Mass: 37619.738 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) Mus musculus (house mouse) / Gene: Duoxa1 / Production host: Homo sapiens (human) / References: UniProt: Q8VE49 |
-Sugars , 2 types, 5 molecules
#3: Polysaccharide | alpha-D-mannopyranose-(1-3)-alpha-D-mannopyranose-(1-6)-beta-D-mannopyranose-(1-4)-2-acetamido-2- ...alpha-D-mannopyranose-(1-3)-alpha-D-mannopyranose-(1-6)-beta-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose Source method: isolated from a genetically manipulated source |
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#5: Sugar | ChemComp-NAG / |
-Non-polymers , 2 types, 3 molecules
#4: Chemical | ChemComp-FAD / |
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#6: Chemical |
-Details
Has ligand of interest | N |
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Has protein modification | Y |
-Experimental details
-Experiment
Experiment | Method: ELECTRON MICROSCOPY |
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EM experiment | Aggregation state: PARTICLE / 3D reconstruction method: single particle reconstruction |
-Sample preparation
Component | Name: mouse DUOX1-DUOXA1 complex / Type: COMPLEX / Entity ID: #1-#2 / Source: RECOMBINANT |
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Molecular weight | Value: 0.22 MDa / Experimental value: NO |
Source (natural) | Organism: Mus musculus (house mouse) |
Source (recombinant) | Organism: Homo sapiens (human) |
Buffer solution | pH: 8 |
Specimen | Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES |
Specimen support | Grid material: GOLD / Grid mesh size: 400 divisions/in. / Grid type: Quantifoil R1.2/1.3 |
Vitrification | Cryogen name: ETHANE / Humidity: 100 % |
-Electron microscopy imaging
Experimental equipment | Model: Titan Krios / Image courtesy: FEI Company |
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Microscopy | Model: FEI TITAN KRIOS |
Electron gun | Electron source: FIELD EMISSION GUN / Accelerating voltage: 300 kV / Illumination mode: FLOOD BEAM |
Electron lens | Mode: BRIGHT FIELD |
Image recording | Electron dose: 65.4 e/Å2 / Film or detector model: GATAN K3 (6k x 4k) |
-Processing
Software | Name: PHENIX / Version: 1.17.1_3660: / Classification: refinement | ||||||||||||||||||||||||
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EM software | Name: cryoSPARC / Version: 2.13 / Category: 3D reconstruction | ||||||||||||||||||||||||
CTF correction | Type: NONE | ||||||||||||||||||||||||
Symmetry | Point symmetry: C1 (asymmetric) | ||||||||||||||||||||||||
3D reconstruction | Resolution: 3.2 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 534337 / Symmetry type: POINT | ||||||||||||||||||||||||
Atomic model building | Protocol: AB INITIO MODEL | ||||||||||||||||||||||||
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