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- PDB-8yzi: The structure of PDCoV RBD and dog APN complex -

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Basic information

Entry
Database: PDB / ID: 8yzi
TitleThe structure of PDCoV RBD and dog APN complex
Components
  • Aminopeptidase N
  • Spike protein
KeywordsISOMERASE / PDCoV / PROTEIN BINDING
Function / homology
Function and homology information


alanyl aminopeptidase activity / membrane alanyl aminopeptidase / peptide catabolic process / metalloaminopeptidase activity / peptide binding / virus receptor activity / angiogenesis / cell differentiation / host cell endoplasmic reticulum-Golgi intermediate compartment membrane / receptor-mediated virion attachment to host cell ...alanyl aminopeptidase activity / membrane alanyl aminopeptidase / peptide catabolic process / metalloaminopeptidase activity / peptide binding / virus receptor activity / angiogenesis / cell differentiation / host cell endoplasmic reticulum-Golgi intermediate compartment membrane / receptor-mediated virion attachment to host cell / endocytosis involved in viral entry into host cell / fusion of virus membrane with host plasma membrane / fusion of virus membrane with host endosome membrane / viral envelope / virion membrane / proteolysis / extracellular space / zinc ion binding / membrane / plasma membrane / cytoplasm
Similarity search - Function
Spike glycoprotein S1, coronavirus / Coronavirus spike glycoprotein S1 / Aminopeptidase N-type / ERAP1-like C-terminal domain / : / ERAP1-like C-terminal domain / Peptidase M1, alanine aminopeptidase/leukotriene A4 hydrolase / Peptidase M1, membrane alanine aminopeptidase / Aminopeptidase N-like , N-terminal domain / Peptidase family M1 domain ...Spike glycoprotein S1, coronavirus / Coronavirus spike glycoprotein S1 / Aminopeptidase N-type / ERAP1-like C-terminal domain / : / ERAP1-like C-terminal domain / Peptidase M1, alanine aminopeptidase/leukotriene A4 hydrolase / Peptidase M1, membrane alanine aminopeptidase / Aminopeptidase N-like , N-terminal domain / Peptidase family M1 domain / Peptidase M1 N-terminal domain / Aminopeptidase N-like , N-terminal domain superfamliy / Spike glycoprotein S2, coronavirus, C-terminal / Coronavirus spike glycoprotein S2, intravirion / Peptidase M4/M1, CTD superfamily / Neutral zinc metallopeptidases, zinc-binding region signature. / Coronavirus spike glycoprotein S1, C-terminal / Coronavirus spike glycoprotein S1, C-terminal / Spike glycoprotein S2, coronavirus, heptad repeat 1 / Spike glycoprotein S2, coronavirus, heptad repeat 2 / Coronavirus spike (S) glycoprotein S2 subunit heptad repeat 1 (HR1) region profile. / Coronavirus spike (S) glycoprotein S2 subunit heptad repeat 2 (HR2) region profile. / Spike glycoprotein S2 superfamily, coronavirus / Spike glycoprotein S2, coronavirus / Coronavirus spike glycoprotein S2
Similarity search - Domain/homology
Spike protein / Aminopeptidase N
Similarity search - Component
Biological speciesPorcine deltacoronavirus
Canis lupus familiaris (dog)
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 3.05 Å
AuthorsSun, J.Q. / Niu, S.
Funding support China, 1items
OrganizationGrant numberCountry
National Natural Science Foundation of China (NSFC)32270157 China
CitationJournal: PLoS Pathog / Year: 2025
Title: Cross-species recognition of two porcine coronaviruses to their cellular receptor aminopeptidase N of dogs and seven other species.
Authors: Yuyang Tian / Junqing Sun / Xiaohan Hou / Zhimin Liu / Zeao Chen / Xiaoqian Pan / Ying Wang / Jianle Ren / Ding Zhang / Bo Yang / Longlong Si / Yuhai Bi / Kefang Liu / Guijun Shang / Wen-Xia ...Authors: Yuyang Tian / Junqing Sun / Xiaohan Hou / Zhimin Liu / Zeao Chen / Xiaoqian Pan / Ying Wang / Jianle Ren / Ding Zhang / Bo Yang / Longlong Si / Yuhai Bi / Kefang Liu / Guijun Shang / Wen-Xia Tian / Qihui Wang / George Fu Gao / Sheng Niu /
Abstract: Porcine deltacoronavirus (PDCoV) and transmissible gastroenteritis coronavirus (TGEV), the two causative agents of porcine diarrhea, have been reported to be at risk of cross-species transmission, ...Porcine deltacoronavirus (PDCoV) and transmissible gastroenteritis coronavirus (TGEV), the two causative agents of porcine diarrhea, have been reported to be at risk of cross-species transmission, including to humans. However, the potential host range in which these two CoVs interact remains unclear. We screened 16 animal counterparts for porcine aminopeptidase N (APN), the receptor of PDCoV and TGEV, and found that APNs from eight of 17 animals could bind to the receptor-binding domains (RBDs) of PDCoV and TGEV. Furthermore, the animal APNs that could bind to the RBDs could mediate cellular infection by both viruses. Dog APN (dAPN) has been identified as the animal receptor with the highest capability to mediate the virus infection. We further resolved the complex structures of dAPN bound to the PDCoV RBD/TGEV RBD, respectively, establishing its divergent receptor-binding modes. We identified R325 of dAPN as an important residue in the PDCoV RBD-dAPN interaction, and found the central role of Q746 and T749 in dAPN in the interaction with the TGEV RBD. These findings provide the molecular basis of the potential cross-species transmission of these two porcine CoVs and shed light on future surveillance of these CoVs.
History
DepositionApr 7, 2024Deposition site: PDBJ / Processing site: PDBC
Revision 1.0Dec 11, 2024Provider: repository / Type: Initial release
Revision 1.1Jun 25, 2025Group: Data collection / Database references / Category: citation / citation_author / em_admin
Item: _citation.country / _citation.journal_abbrev ..._citation.country / _citation.journal_abbrev / _citation.journal_id_CSD / _citation.journal_id_ISSN / _citation.journal_volume / _citation.page_first / _citation.page_last / _citation.pdbx_database_id_DOI / _citation.pdbx_database_id_PubMed / _citation.title / _citation.year / _em_admin.last_update

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

Downloads & links

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Assembly

Deposited unit
C: Spike protein
A: Spike protein
B: Aminopeptidase N
D: Aminopeptidase N
hetero molecules


Theoretical massNumber of molelcules
Total (without water)248,79123
Polymers242,9094
Non-polymers5,88219
Water00
1


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

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Components

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Protein , 2 types, 4 molecules CABD

#1: Protein Spike protein


Mass: 14652.571 Da / Num. of mol.: 2 / Fragment: RBD
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Porcine deltacoronavirus / Production host: Homo sapiens (human) / References: UniProt: A0A0E3N634
#2: Protein Aminopeptidase N / AP-N / cAPN / Alanyl aminopeptidase / Aminopeptidase M / AP-M / Microsomal aminopeptidase


Mass: 106801.773 Da / Num. of mol.: 2
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Canis lupus familiaris (dog) / Gene: ANPEP / Cell line (production host): HEK293F / Production host: Homo sapiens (human) / References: UniProt: P79143, membrane alanyl aminopeptidase

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Sugars , 3 types, 17 molecules

#3: Polysaccharide
2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose


Type: oligosaccharide / Mass: 424.401 Da / Num. of mol.: 9
Source method: isolated from a genetically manipulated source
DescriptorTypeProgram
DGlcpNAcb1-4DGlcpNAcb1-ROHGlycam Condensed SequenceGMML 1.0
WURCS=2.0/1,2,1/[a2122h-1b_1-5_2*NCC/3=O]/1-1/a4-b1WURCSPDB2Glycan 1.1.0
[][D-1-deoxy-GlcpNAc]{[(4+1)][b-D-GlcpNAc]{}}LINUCSPDB-CARE
#4: Polysaccharide beta-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose


Type: oligosaccharide / Mass: 383.349 Da / Num. of mol.: 1
Source method: isolated from a genetically manipulated source
DescriptorTypeProgram
DManpb1-4DGlcpNAcb1-ROHGlycam Condensed SequenceGMML 1.0
WURCS=2.0/2,2,1/[a2122h-1b_1-5_2*NCC/3=O][a1122h-1b_1-5]/1-2/a4-b1WURCSPDB2Glycan 1.1.0
[][D-1-deoxy-GlcpNAc]{[(4+1)][b-D-Manp]{}}LINUCSPDB-CARE
#5: Sugar
ChemComp-NAG / 2-acetamido-2-deoxy-beta-D-glucopyranose / N-acetyl-beta-D-glucosamine / 2-acetamido-2-deoxy-beta-D-glucose / 2-acetamido-2-deoxy-D-glucose / 2-acetamido-2-deoxy-glucose / N-ACETYL-D-GLUCOSAMINE


Type: D-saccharide, beta linking / Mass: 221.208 Da / Num. of mol.: 7 / Source method: obtained synthetically / Formula: C8H15NO6
IdentifierTypeProgram
DGlcpNAcbCONDENSED IUPAC CARBOHYDRATE SYMBOLGMML 1.0
N-acetyl-b-D-glucopyranosamineCOMMON NAMEGMML 1.0
b-D-GlcpNAcIUPAC CARBOHYDRATE SYMBOLPDB-CARE 1.0
GlcNAcSNFG CARBOHYDRATE SYMBOLGMML 1.0

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Non-polymers , 1 types, 2 molecules

#6: Chemical ChemComp-ZN / ZINC ION


Mass: 65.409 Da / Num. of mol.: 2 / Source method: obtained synthetically / Formula: Zn

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Details

Has ligand of interestN
Has protein modificationY

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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: The PDCoV RBD-dAPN complex / Type: COMPLEX / Entity ID: #1-#2 / Source: RECOMBINANT
Source (natural)Organism: Canis lupus familiaris (dog)
Source (recombinant)Organism: Homo sapiens (human)
Buffer solutionpH: 8
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: FEI TITAN KRIOS
Electron gunElectron source: FIELD EMISSION GUN / Accelerating voltage: 300 kV / Illumination mode: FLOOD BEAM
Electron lensMode: BRIGHT FIELD / Nominal defocus max: 2000 nm / Nominal defocus min: 1000 nm / Cs: 0.001 mm
Image recordingElectron dose: 60 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: 3.05 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 90772 / Symmetry type: POINT

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