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- EMDB-34389: Structure of human phagocyte NADPH oxidase in the resting state -
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Open data
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Basic information
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Title | Structure of human phagocyte NADPH oxidase in the resting state | ||||||||||||
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![]() | NOX2 / p22 / CYBA / CYBB / TP1170 / NOX / OXIDOREDUCTASE | ||||||||||||
Function / homology | ![]() smooth muscle hypertrophy / superoxide-generating NADPH oxidase activity / Oxidoreductases; Acting on NADH or NADPH; With oxygen as acceptor / cellular response to L-glutamine / hypoxia-inducible factor-1alpha signaling pathway / positive regulation of toll-like receptor 2 signaling pathway / positive regulation of defense response to bacterium / mucus secretion / perinuclear endoplasmic reticulum / superoxide-generating NAD(P)H oxidase activity ...smooth muscle hypertrophy / superoxide-generating NADPH oxidase activity / Oxidoreductases; Acting on NADH or NADPH; With oxygen as acceptor / cellular response to L-glutamine / hypoxia-inducible factor-1alpha signaling pathway / positive regulation of toll-like receptor 2 signaling pathway / positive regulation of defense response to bacterium / mucus secretion / perinuclear endoplasmic reticulum / superoxide-generating NAD(P)H oxidase activity / Cross-presentation of particulate exogenous antigens (phagosomes) / NADPH oxidase complex / cytochrome complex assembly / respiratory burst / WNT5:FZD7-mediated leishmania damping / ROS and RNS production in phagocytes / regulation of release of sequestered calcium ion into cytosol / cellular response to ethanol / response to angiotensin / hydrogen peroxide biosynthetic process / superoxide anion generation / positive regulation of mucus secretion / superoxide metabolic process / cellular response to cadmium ion / positive regulation of reactive oxygen species biosynthetic process / response to aldosterone / Detoxification of Reactive Oxygen Species / tertiary granule membrane / RHO GTPases Activate NADPH Oxidases / monoatomic ion channel complex / RAC2 GTPase cycle / RAC3 GTPase cycle / NADPH binding / specific granule membrane / positive regulation of phagocytosis / RAC1 GTPase cycle / response to nutrient / FAD binding / secretory granule / establishment of localization in cell / defense response / SH3 domain binding / positive regulation of interleukin-6 production / VEGFA-VEGFR2 Pathway / phagocytic vesicle membrane / positive regulation of angiogenesis / positive regulation of tumor necrosis factor production / nuclear envelope / flavin adenine dinucleotide binding / monoatomic ion transmembrane transport / electron transfer activity / oxidoreductase activity / endosome / inflammatory response / protein heterodimerization activity / response to xenobiotic stimulus / innate immune response / neuronal cell body / heme binding / dendrite / Neutrophil degranulation / endoplasmic reticulum membrane / metal ion binding / membrane / plasma membrane Similarity search - Function | ||||||||||||
Biological species | ![]() ![]() ![]() ![]() ![]() | ||||||||||||
Method | single particle reconstruction / cryo EM / Resolution: 3.3 Å | ||||||||||||
![]() | Chen L / Liu R / Song K | ||||||||||||
Funding support | ![]()
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![]() | ![]() Title: Structure of human phagocyte NADPH oxidase in the resting state. Authors: Rui Liu / Kangcheng Song / Jing-Xiang Wu / Xiao-Peng Geng / Liming Zheng / Xiaoyin Gao / Hailin Peng / Lei Chen / ![]() Abstract: Phagocyte oxidase plays an essential role in the first line of host defense against pathogens. It oxidizes intracellular NADPH to reduce extracellular oxygen to produce superoxide anions that ...Phagocyte oxidase plays an essential role in the first line of host defense against pathogens. It oxidizes intracellular NADPH to reduce extracellular oxygen to produce superoxide anions that participate in pathogen killing. The resting phagocyte oxidase is a heterodimeric complex formed by two transmembrane proteins NOX2 and p22. Despite the physiological importance of this complex, its structure remains elusive. Here, we reported the cryo-EM structure of the functional human NOX2-p22 complex in nanodisc in the resting state. NOX2 shows a canonical 6-TM architecture of NOX and p22 has four transmembrane helices. M3, M4, and M5 of NOX2, and M1 and M4 helices of p22 are involved in the heterodimer formation. Dehydrogenase (DH) domain of NOX2 in the resting state is not optimally docked onto the transmembrane domain, leading to inefficient electron transfer and NADPH binding. Structural analysis suggests that the cytosolic factors might activate the NOX2-p22 complex by stabilizing the DH in a productive docked conformation. | ||||||||||||
History |
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Structure visualization
Supplemental images |
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Downloads & links
-EMDB archive
Map data | ![]() | 78.8 MB | ![]() | |
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Header (meta data) | ![]() ![]() | 19 KB 19 KB | Display Display | ![]() |
Images | ![]() | 85.6 KB | ||
Filedesc metadata | ![]() | 6.8 KB | ||
Archive directory | ![]() ![]() | HTTPS FTP |
-Related structure data
Related structure data | ![]() 8gz3MC C: citing same article ( M: atomic model generated by this map |
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Similar structure data | Similarity search - Function & homology ![]() |
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Links
EMDB pages | ![]() ![]() |
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Related items in Molecule of the Month |
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Map
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Projections & slices | Image control
Images are generated by Spider. | ||||||||||||||||||||||||||||||||||||
Voxel size | X=Y=Z: 1.05557 Å | ||||||||||||||||||||||||||||||||||||
Density |
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Symmetry | Space group: 1 | ||||||||||||||||||||||||||||||||||||
Details | EMDB XML:
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-Supplemental data
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Sample components
+Entire : NADPH oxidase2
+Supramolecule #1: NADPH oxidase2
+Macromolecule #1: Cytochrome b-245 light chain
+Macromolecule #2: Cytochrome b-245 heavy chain
+Macromolecule #3: 7D5 Fab light chain
+Macromolecule #4: 7D5 Fab heavy chain
+Macromolecule #5: Green Fluorescent Protein, Anti-Fab (kappa) nanobody[TP1170] chimera
+Macromolecule #7: FLAVIN-ADENINE DINUCLEOTIDE
+Macromolecule #8: PROTOPORPHYRIN IX CONTAINING FE
+Macromolecule #9: 2-acetamido-2-deoxy-beta-D-glucopyranose
+Macromolecule #10: 1-palmitoyl-2-oleoyl-sn-glycero-3-phosphocholine
+Macromolecule #11: water
-Experimental details
-Structure determination
Method | cryo EM |
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![]() | single particle reconstruction |
Aggregation state | particle |
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Sample preparation
Buffer | pH: 7.5 |
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Vitrification | Cryogen name: ETHANE |
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Electron microscopy
Microscope | FEI TITAN KRIOS |
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Image recording | Film or detector model: GATAN K2 QUANTUM (4k x 4k) / Average electron dose: 37.6 e/Å2 |
Electron beam | Acceleration voltage: 300 kV / Electron source: ![]() |
Electron optics | Illumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD / Nominal defocus max: 2.0 µm / Nominal defocus min: 1.5 µm |
Experimental equipment | ![]() Model: Titan Krios / Image courtesy: FEI Company |
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Image processing
Startup model | Type of model: OTHER |
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Final reconstruction | Resolution.type: BY AUTHOR / Resolution: 3.3 Å / Resolution method: FSC 0.143 CUT-OFF / Number images used: 84035 |
Initial angle assignment | Type: MAXIMUM LIKELIHOOD |
Final angle assignment | Type: MAXIMUM LIKELIHOOD |