+Open data
-Basic information
Entry | Database: EMDB / ID: EMD-25692 | |||||||||
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Title | The 6.1 angstrom cryoEM map of calprotectin bound to TdfH | |||||||||
Map data | cryoEM map of calprotectin bound to TdfH | |||||||||
Sample |
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Biological species | Neisseria gonorrhoeae (bacteria) | |||||||||
Method | single particle reconstruction / cryo EM / Resolution: 6.05 Å | |||||||||
Authors | Bera A / Noinaj N | |||||||||
Funding support | United States, 2 items
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Citation | Journal: Commun Biol / Year: 2022 Title: TdfH selectively binds metal-loaded tetrameric calprotectin for zinc import. Authors: Aloke K Bera / Runrun Wu / Simone Harrison / Cynthia Nau Cornelissen / Walter J Chazin / Nicholas Noinaj / Abstract: To combat nutritional immunity, N. gonorrhoeae has evolved systems to hijack zinc and other metals directly from host metal-binding proteins such as calprotectin (CP). Here, we report the 6.1 Å ...To combat nutritional immunity, N. gonorrhoeae has evolved systems to hijack zinc and other metals directly from host metal-binding proteins such as calprotectin (CP). Here, we report the 6.1 Å cryoEM structure of the gonococcal surface receptor TdfH in complex with a zinc-bound CP tetramer. We further show that TdfH can also interact with CP in the presence of copper and manganese, but not with cobalt. | |||||||||
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_25692.map.gz | 59.7 MB | EMDB map data format | |
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Header (meta data) | emd-25692-v30.xml emd-25692.xml | 8 KB 8 KB | Display Display | EMDB header |
Images | emd_25692.png | 76.3 KB | ||
Archive directory | http://ftp.pdbj.org/pub/emdb/structures/EMD-25692 ftp://ftp.pdbj.org/pub/emdb/structures/EMD-25692 | HTTPS FTP |
-Validation report
Summary document | emd_25692_validation.pdf.gz | 339.1 KB | Display | EMDB validaton report |
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Full document | emd_25692_full_validation.pdf.gz | 338.6 KB | Display | |
Data in XML | emd_25692_validation.xml.gz | 6.3 KB | Display | |
Data in CIF | emd_25692_validation.cif.gz | 7.2 KB | Display | |
Arichive directory | https://ftp.pdbj.org/pub/emdb/validation_reports/EMD-25692 ftp://ftp.pdbj.org/pub/emdb/validation_reports/EMD-25692 | HTTPS FTP |
-Related structure data
Similar structure data |
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-Links
EMDB pages | EMDB (EBI/PDBe) / EMDataResource |
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-Map
File | Download / File: emd_25692.map.gz / Format: CCP4 / Size: 64 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Annotation | cryoEM map of calprotectin bound to TdfH | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Projections & slices | Image control
Images are generated by Spider. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Voxel size | X=Y=Z: 1.08 Å | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Density |
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Symmetry | Space group: 1 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Details | EMDB XML:
CCP4 map header:
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-Supplemental data
-Sample components
-Entire : TdfH in complex with calprotectin
Entire | Name: TdfH in complex with calprotectin |
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Components |
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-Supramolecule #1: TdfH in complex with calprotectin
Supramolecule | Name: TdfH in complex with calprotectin / type: complex / Chimera: Yes / ID: 1 / Parent: 0 / Details: TdfH is from Ngo, calprotectin is from human |
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Source (natural) | Organism: Neisseria gonorrhoeae (bacteria) |
Recombinant expression | Organism: Escherichia coli BL21(DE3) (bacteria) |
-Experimental details
-Structure determination
Method | cryo EM |
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Processing | single particle reconstruction |
Aggregation state | particle |
-Sample preparation
Buffer | pH: 7.4 |
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Vitrification | Cryogen name: ETHANE |
-Electron microscopy
Microscope | TFS KRIOS |
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Image recording | Film or detector model: GATAN K3 (6k x 4k) / Average electron dose: 44.75 e/Å2 |
Electron beam | Acceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN |
Electron optics | Illumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD / Nominal defocus max: 2.11 µm / Nominal defocus min: 0.42 µm |
Experimental equipment | Model: Titan Krios / Image courtesy: FEI Company |
-Image processing
Final reconstruction | Resolution.type: BY AUTHOR / Resolution: 6.05 Å / Resolution method: FSC 0.143 CUT-OFF / Number images used: 11724 |
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Initial angle assignment | Type: MAXIMUM LIKELIHOOD |
Final angle assignment | Type: MAXIMUM LIKELIHOOD |