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- PDB-9jw1: Cryo-EM structure of Human RNF213 -

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Basic information

Entry
Database: PDB / ID: 9jw1
TitleCryo-EM structure of Human RNF213
ComponentsRing finger protein 213
KeywordsCYTOSOLIC PROTEIN / RNF213 / IpaH1.4
Function / homology
Function and homology information


immune system process / ubiquitin-protein transferase activity / nucleolus / ATP hydrolysis activity / zinc ion binding / cytosol
Similarity search - Function
E3 ubiquitin-protein ligase RNF213 / Zinc finger, RZ-type / RZ type zinc finger domain / Zinc finger RZ-type profile. / Zinc finger, C3HC4 RING-type / Zinc finger, C3HC4 type (RING finger) / Ring finger / Zinc finger RING-type profile. / Zinc finger, RING-type / Zinc finger, RING/FYVE/PHD-type ...E3 ubiquitin-protein ligase RNF213 / Zinc finger, RZ-type / RZ type zinc finger domain / Zinc finger RZ-type profile. / Zinc finger, C3HC4 RING-type / Zinc finger, C3HC4 type (RING finger) / Ring finger / Zinc finger RING-type profile. / Zinc finger, RING-type / Zinc finger, RING/FYVE/PHD-type / ATPases associated with a variety of cellular activities / AAA+ ATPase domain / P-loop containing nucleoside triphosphate hydrolase
Similarity search - Domain/homology
ADENOSINE-5'-TRIPHOSPHATE / Ring finger protein 213
Similarity search - Component
Biological speciesHomo sapiens (human)
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.46 Å
AuthorsZhang, H.
Funding support China, 1items
OrganizationGrant numberCountry
National Natural Science Foundation of China (NSFC) China
CitationJournal: Nat Commun / Year: 2025
Title: Shigella effector IpaH1.4 subverts host E3 ligase RNF213 to evade antibacterial immunity.
Authors: Xindi Zhou / Huijing Zhang / Yaru Wang / Danni Wang / Zhiqiao Lin / Yuchao Zhang / Yubin Tang / Jianping Liu / Yu-Feng Yao / Yixiao Zhang / Lifeng Pan /
Abstract: Ubiquitination plays vital roles in modulating pathogen-host cell interactions. RNF213, a E3 ligase, can catalyze the ubiquitination of lipopolysaccharide (LPS) and is crucial for antibacterial ...Ubiquitination plays vital roles in modulating pathogen-host cell interactions. RNF213, a E3 ligase, can catalyze the ubiquitination of lipopolysaccharide (LPS) and is crucial for antibacterial immunity in mammals. Shigella flexneri, an LPS-containing pathogenic bacterium, has developed mechanisms to evade host antibacterial defenses during infection. However, the precise strategies by which S. flexneri circumvents RNF213-mediated antibacterial immunity remain poorly understood. Here, through comprehensive biochemical, structural and cellular analyses, we reveal that the E3 effector IpaH1.4 of S. flexneri can directly target human RNF213 via a specific interaction between the IpaH1.4 LRR domain and the RING domain of RNF213, and mediate the ubiquitination and proteasomal degradation of RNF213 in cells. Furthermore, we determine the cryo-EM structure of human RNF213 and the crystal structure of the IpaH1.4 LRR/RNF213 RING complex, elucidating the molecular mechanism underlying the specific recognition of RNF213 by IpaH1.4. Finally, our cell based functional assays demonstrate that the targeting of host RNF213 by IpaH1.4 promotes S. flexneri proliferation within infected cells. In summary, our work uncovers an unprecedented strategy employed by S. flexneri to subvert the key host immune factor RNF213, thereby facilitating bacterial proliferation during invasion.
History
DepositionOct 9, 2024Deposition site: PDBJ / Processing site: PDBC
Revision 1.0May 7, 2025Provider: repository / Type: Initial release
Revision 1.0May 7, 2025Data content type: EM metadata / Data content type: EM metadata / Provider: repository / Type: Initial release
Revision 1.0May 7, 2025Data content type: Half map / Part number: 1 / Data content type: Half map / Provider: repository / Type: Initial release
Revision 1.0May 7, 2025Data content type: Half map / Part number: 2 / Data content type: Half map / Provider: repository / Type: Initial release
Revision 1.0May 7, 2025Data content type: Image / Data content type: Image / Provider: repository / Type: Initial release
Revision 1.0May 7, 2025Data content type: Primary map / Data content type: Primary map / Provider: repository / Type: Initial release

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

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Assembly

Deposited unit
A: Ring finger protein 213
hetero molecules


Theoretical massNumber of molelcules
Total (without water)554,1043
Polymers553,5731
Non-polymers5312
Water00
1


  • Idetical with deposited unit
  • defined by author
  • Evidence: electron microscopy, not applicable
TypeNameSymmetry operationNumber
identity operation1_5551

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Components

#1: Protein Ring finger protein 213 / E3 ubiquitin-protein ligase RNF213


Mass: 553572.625 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: RNF213 / Production host: Homo sapiens (human) / References: UniProt: A0A0A0MTC1
#2: Chemical ChemComp-ATP / ADENOSINE-5'-TRIPHOSPHATE


Mass: 507.181 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: C10H16N5O13P3 / Feature type: SUBJECT OF INVESTIGATION / Comment: ATP, energy-carrying molecule*YM
#3: Chemical ChemComp-MG / MAGNESIUM ION


Mass: 24.305 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: Mg / Feature type: SUBJECT OF INVESTIGATION
Has ligand of interestY
Has protein modificationN

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Experimental details

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Experiment

ExperimentMethod: ELECTRON MICROSCOPY
EM experimentAggregation state: PARTICLE / 3D reconstruction method: single particle reconstruction

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Sample preparation

ComponentName: E3 ubiquitin-protein ligase RNF213 / Type: COMPLEX / Entity ID: #1 / Source: RECOMBINANT
Molecular weightValue: 553.1 kDa/nm / Experimental value: YES
Source (natural)Organism: Homo sapiens (human)
Source (recombinant)Organism: Homo sapiens (human)
Buffer solutionpH: 7.5
SpecimenEmbedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES
VitrificationCryogen name: ETHANE

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Electron microscopy imaging

Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company
MicroscopyModel: TFS KRIOS
Electron gunElectron source: FIELD EMISSION GUN / Accelerating voltage: 300 kV / Illumination mode: FLOOD BEAM
Electron lensMode: BRIGHT FIELD / Nominal defocus max: 2400 nm / Nominal defocus min: 1400 nm
Image recordingElectron dose: 49.41 e/Å2 / Film or detector model: GATAN K3 (6k x 4k)

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Processing

CTF correctionType: PHASE FLIPPING AND AMPLITUDE CORRECTION
3D reconstructionResolution: 3.46 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 179169 / Symmetry type: POINT

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