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Open data
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Basic information
| Entry | Database: PDB / ID: 9oaa | |||||||||||||||||||||
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| Title | The structure of TdfH from Neisseria gonorrhoeae | |||||||||||||||||||||
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Keywords | MEMBRANE PROTEIN / outer membrane protein / metal transport / gram-negative bacteria / Neisseria / tonB dependent transporter | |||||||||||||||||||||
| Function / homology | Function and homology informationS100A8 complex / S100A9 complex / neutrophil aggregation / calprotectin complex / regulation of respiratory burst involved in inflammatory response / positive regulation of peptide secretion / autocrine signaling / chronic inflammatory response / peptidyl-cysteine S-trans-nitrosylation / Toll-like receptor 4 binding ...S100A8 complex / S100A9 complex / neutrophil aggregation / calprotectin complex / regulation of respiratory burst involved in inflammatory response / positive regulation of peptide secretion / autocrine signaling / chronic inflammatory response / peptidyl-cysteine S-trans-nitrosylation / Toll-like receptor 4 binding / siderophore transmembrane transport / peptidyl-cysteine S-nitrosylation / Metal sequestration by antimicrobial proteins / siderophore uptake transmembrane transporter activity / peptide secretion / RAGE receptor binding / leukocyte migration involved in inflammatory response / Regulation of TLR by endogenous ligand / astrocyte development / intermediate filament cytoskeleton / MyD88 deficiency (TLR2/4) / IRAK4 deficiency (TLR2/4) / MyD88:MAL(TIRAP) cascade initiated on plasma membrane / arachidonate binding / response to zinc ion / regulation of toll-like receptor signaling pathway / regulation of cytoskeleton organization / antioxidant activity / RHO GTPases Activate NADPH Oxidases / defense response to fungus / endothelial cell migration / positive regulation of intrinsic apoptotic signaling pathway / neutrophil chemotaxis / cell outer membrane / positive regulation of neuron projection development / : / autophagy / positive regulation of inflammatory response / calcium-dependent protein binding / antimicrobial humoral immune response mediated by antimicrobial peptide / cell-cell signaling / : / ER-Phagosome pathway / positive regulation of cell growth / response to ethanol / secretory granule lumen / response to lipopolysaccharide / microtubule binding / cytoskeleton / defense response to bacterium / inflammatory response / innate immune response / apoptotic process / calcium ion binding / Neutrophil degranulation / extracellular space / extracellular exosome / extracellular region / zinc ion binding / nucleus / plasma membrane / cytosol / cytoplasm Similarity search - Function | |||||||||||||||||||||
| Biological species | Neisseria gonorrhoeae FA 1090 (bacteria) Homo sapiens (human) | |||||||||||||||||||||
| Method | ELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.67 Å | |||||||||||||||||||||
Authors | Bera, A. / Noinaj, N. | |||||||||||||||||||||
| Funding support | United States, 2items
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Citation | Journal: Structure / Year: 2025Title: Structural insights into zinc piracy by Neisseria gonorrhoeae to overcome nutritional immunity. Authors: Pooneh Tavakoley Gheinani / Aloke Bera / Julie Stoudenmire-Saylor / Yi Lien / Simone A Harrison / Alison Criss / Walter J Chazin / Nicholas Noinaj / Cynthia Nau Cornelissen / ![]() Abstract: With an estimated 106 million global cases annually, Neisseria gonorrhoeae (Ngo) poses a significant public health problem. Ngo demonstrates a remarkable capacity to overcome nutritional immunity ...With an estimated 106 million global cases annually, Neisseria gonorrhoeae (Ngo) poses a significant public health problem. Ngo demonstrates a remarkable capacity to overcome nutritional immunity through the deployment of specialized transporters that pirate metals such as zinc from human proteins such as calprotectin (hCP). We report the cryo-EM structure of Ngo TdfH in complex with a heterotetramer of hCP. An extensive binding interface is mediated almost entirely by the S100A9 subunits of hCP. Mutagenesis studies of residues in the large binding interface reveal minimal effects from single-site mutations, whereas larger truncations disrupt binding and function. These results support a mechanistic model based on the large interaction interface overcoming a steric clash between α-helix III of S100A9 and loops 5 and 9 of TdfH, which leads to the distortion of the proximal His6 site, followed by zinc release, and import through the barrel domain. | |||||||||||||||||||||
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Structure visualization
| Structure viewer | Molecule: Molmil Jmol/JSmol |
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Downloads & links
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Download
| PDBx/mmCIF format | 9oaa.cif.gz | 234.5 KB | Display | PDBx/mmCIF format |
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| PDB format | pdb9oaa.ent.gz | 183.6 KB | Display | PDB format |
| PDBx/mmJSON format | 9oaa.json.gz | Tree view | PDBx/mmJSON format | |
| Others | Other downloads |
-Validation report
| Summary document | 9oaa_validation.pdf.gz | 1.5 MB | Display | wwPDB validaton report |
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| Full document | 9oaa_full_validation.pdf.gz | 1.5 MB | Display | |
| Data in XML | 9oaa_validation.xml.gz | 46.9 KB | Display | |
| Data in CIF | 9oaa_validation.cif.gz | 68.5 KB | Display | |
| Arichive directory | https://data.pdbj.org/pub/pdb/validation_reports/oa/9oaa ftp://data.pdbj.org/pub/pdb/validation_reports/oa/9oaa | HTTPS FTP |
-Related structure data
| Related structure data | ![]() 70277MC M: map data used to model this data C: citing same article ( |
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| Similar structure data | Similarity search - Function & homology F&H Search |
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Links
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Assembly
| Deposited unit | ![]()
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Components
| #1: Protein | Mass: 101580.930 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) Neisseria gonorrhoeae FA 1090 (bacteria)Gene: NGO_0952 / Production host: ![]() | ||||||||||
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| #2: Protein | Mass: 10789.375 Da / Num. of mol.: 2 Source method: isolated from a genetically manipulated source Source: (gene. exp.) Homo sapiens (human) / Gene: S100A8, CAGA, CFAG, MRP8 / Production host: ![]() #3: Protein | Mass: 13211.966 Da / Num. of mol.: 2 Source method: isolated from a genetically manipulated source Source: (gene. exp.) Homo sapiens (human) / Gene: S100A9, CAGB, CFAG, MRP14 / Production host: ![]() #4: Chemical | ChemComp-CA / #5: Chemical | ChemComp-ZN / | Has ligand of interest | Y | 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 |
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Sample preparation
| Component | Name: TdfH and calprotectin complex / Type: COMPLEX / Entity ID: #1-#3 / Source: MULTIPLE SOURCES |
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| Molecular weight | Experimental value: NO |
| Source (natural) | Organism: Neisseria gonorrhoeae FA 1090 (bacteria) |
| Source (recombinant) | Organism: ![]() |
| Buffer solution | pH: 7.4 |
| Specimen | Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES |
| Vitrification | Cryogen name: ETHANE |
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Electron microscopy imaging
| Experimental equipment | ![]() Model: Titan Krios / Image courtesy: FEI Company |
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| Microscopy | Model: TFS KRIOS |
| Electron gun | Electron source: FIELD EMISSION GUN / Accelerating voltage: 300 kV / Illumination mode: FLOOD BEAM |
| Electron lens | Mode: BRIGHT FIELD / Nominal defocus max: 2500 nm / Nominal defocus min: 1500 nm |
| Image recording | Electron dose: 45.4 e/Å2 / Film or detector model: GATAN K3 BIOQUANTUM (6k x 4k) |
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Processing
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| CTF correction | Type: NONE | ||||||||||||
| 3D reconstruction | Resolution: 3.67 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 70585 / Symmetry type: POINT |
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About Yorodumi




Neisseria gonorrhoeae FA 1090 (bacteria)
Homo sapiens (human)
United States, 2items
Citation
PDBj









FIELD EMISSION GUN