6U7G

HCoV-229E RBD Class V in complex with human APN

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.35 Å
  • R-Value Free: 0.218 
  • R-Value Work: 0.179 
  • R-Value Observed: 0.181 

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Literature

The human coronavirus HCoV-229E S-protein structure and receptor binding.

Li, Z., Tomlinson, A.C.A., Wong, A.H.M., Zhou, D., Desforges, M., Talbot, P.J., Benlekbir, S., Rubinstein, J.L., Rini, J.M.

(2019) Elife 8

  • DOI: https://doi.org/10.7554/eLife.51230
  • Primary Citation of Related Structures:  
    6U7E, 6U7F, 6U7G, 6U7H

  • PubMed Abstract: 

    • The coronavirus S-protein mediates receptor binding and fusion of the viral and host cell membranes. In HCoV-229E, its receptor binding domain (RBD) shows extensive sequence variation but how S-protein function is maintained is not understood. Reported are the X-ray crystal structures of Class III-V RBDs in complex with human aminopeptidase N (hAPN), as well as the electron cryomicroscopy structure of the 229E S-protein ...

    The coronavirus S-protein mediates receptor binding and fusion of the viral and host cell membranes. In HCoV-229E, its receptor binding domain (RBD) shows extensive sequence variation but how S-protein function is maintained is not understood. Reported are the X-ray crystal structures of Class III-V RBDs in complex with human aminopeptidase N (hAPN), as well as the electron cryomicroscopy structure of the 229E S-protein. The structures show that common core interactions define the specificity for hAPN and that the peripheral RBD sequence variation is accommodated by loop plasticity. The results provide insight into immune evasion and the cross-species transmission of 229E and related coronaviruses. We also find that the 229E S-protein can expose a portion of its helical core to solvent. This is undoubtedly facilitated by hydrophilic subunit interfaces that we show are conserved among coronaviruses. These interfaces likely play a role in the S-protein conformational changes associated with membrane fusion.

    Organizational Affiliation: 

    Department of Biochemistry, The University of Toronto, Toronto, Canada.



Macromolecules
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Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Aminopeptidase N
A, B
906Homo sapiensMutation(s): 0 
Gene Names: ANPEP, APN, CD13, PEPN
EC: 3.4.11.2
UniProt & NIH Common Fund Data Resources
Find proteins for P15144 (Homo sapiens)
Explore P15144 
Go to UniProtKB:  P15144
PHAROS:  P15144
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP15144
Protein Feature View
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  • Reference Sequence
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Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
Spike protein
C, D
145Human coronavirus 229EMutation(s): 0 
Gene Names: S
UniProt
Find proteins for Q1HVK2 (Human coronavirus 229E)
Explore Q1HVK2 
Go to UniProtKB:  Q1HVK2
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ1HVK2
Protein Feature View
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  • Reference Sequence
Oligosaccharides

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Entity ID: 3
MoleculeChainsChain Length2D DiagramGlycosylation3D Interactions
2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose
E, F, G, H
2N-Glycosylation Oligosaccharides Interaction
Glycosylation Resources
GlyTouCan:  G42666HT
GlyCosmos:  G42666HT
GlyGen:  G42666HT
Experimental Data & Validation

Experimental Data

Unit Cell:
Length ( Å )Angle ( ˚ )
a = 99.555α = 90
b = 98.682β = 104.6
c = 147.525γ = 90
Software Package:
Software NamePurpose
PHENIXrefinement
HKL-2000data reduction
HKL-2000data scaling
PHASERphasing
PDB_EXTRACTdata extraction

Structure Validation

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Entry History & Funding Information

Deposition Data

Funding OrganizationLocationGrant Number
Canadian Institutes of Health Research (CIHR)Canada--

Revision History  (Full details and data files)

  • Version 1.0: 2019-11-13
    Type: Initial release
  • Version 1.1: 2020-01-08
    Changes: Author supporting evidence
  • Version 1.2: 2020-05-06
    Changes: Data collection, Database references
  • Version 2.0: 2020-07-29
    Type: Remediation
    Reason: Carbohydrate remediation
    Changes: Advisory, Atomic model, Data collection, Derived calculations, Structure summary