6J2J

Crystal structure of bat (Pteropus Alecto) MHC class I Ptal-N*01:01 in complex with MERS-CoV-derived peptide MERS-CoV-S3


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.50 Å
  • R-Value Free: 0.267 
  • R-Value Work: 0.194 
  • R-Value Observed: 0.198 

wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Peptide presentation by bat MHC class I provides new insight into the antiviral immunity of bats.

Lu, D.Liu, K.Zhang, D.Yue, C.Lu, Q.Cheng, H.Wang, L.Chai, Y.Qi, J.Wang, L.F.Gao, G.F.Liu, W.J.

(2019) PLoS Biol 17: e3000436-e3000436

  • DOI: https://doi.org/10.1371/journal.pbio.3000436
  • Primary Citation of Related Structures:  
    6J2D, 6J2E, 6J2F, 6J2G, 6J2H, 6J2I, 6J2J, 6K7T, 6K7U

  • PubMed Abstract: 

    Bats harbor many zoonotic viruses, including highly pathogenic viruses of humans and other mammals, but they are typically asymptomatic in bats. To further understand the antiviral immunity of bats, we screened and identified a series of bat major histocompatibility complex (MHC) I Ptal-N*01:01-binding peptides derived from four different bat-borne viruses, i.e., Hendra virus (HeV), Ebola virus (EBOV), Middle East respiratory syndrome coronavirus (MERS-CoV), and H17N10 influenza-like virus. The structures of Ptal-N*01:01 display unusual peptide presentation features in that the bat-specific 3-amino acid (aa) insertion enables the tight "surface anchoring" of the P1-Asp in pocket A of bat MHC I. As the classical primary anchoring positions, the B and F pockets of Ptal-N*01:01 also show unconventional conformations, which contribute to unusual peptide motifs and distinct peptide presentation. Notably, the features of bat MHC I may be shared by MHC I from various marsupials. Our study sheds light on bat adaptive immunity and may benefit future vaccine development against bat-borne viruses of high impact on humans.


  • Organizational Affiliation

    NHC Key Laboratory of Medical Virology and Viral Diseases, National Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, China.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Ptal-N*01:01
A, D
277Pteropus alectoMutation(s): 0 
Gene Names: Ptal-N
UniProt
Find proteins for A0A125R585 (Pteropus alecto)
Explore A0A125R585 
Go to UniProtKB:  A0A125R585
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupA0A125R585
Sequence Annotations
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  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 2
MoleculeChains Sequence LengthOrganismDetailsImage
Beta-2-microglobulin
B, E
99Homo sapiensMutation(s): 0 
Gene Names: B2M
UniProt & NIH Common Fund Data Resources
Find proteins for P61769 (Homo sapiens)
Explore P61769 
Go to UniProtKB:  P61769
PHAROS:  P61769
GTEx:  ENSG00000166710 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP61769
Sequence Annotations
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  • Reference Sequence

Find similar proteins by:  Sequence   |   3D Structure  

Entity ID: 3
MoleculeChains Sequence LengthOrganismDetailsImage
MERS-CoV-S3
C, F
9Middle East respiratory syndrome-related coronavirusMutation(s): 0 
UniProt
Find proteins for K9N5Q8 (Middle East respiratory syndrome-related coronavirus (isolate United Kingdom/H123990006/2012))
Explore K9N5Q8 
Go to UniProtKB:  K9N5Q8
Entity Groups  
UniProt GroupK9N5Q8
Sequence Annotations
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.50 Å
  • R-Value Free: 0.267 
  • R-Value Work: 0.194 
  • R-Value Observed: 0.198 
  • Space Group: C 2 2 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 101.035α = 90
b = 102.714β = 90
c = 177.674γ = 90
Software Package:
Software NamePurpose
PHENIXrefinement
HKL-2000data reduction
HKL-2000data scaling
PHENIXphasing

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2019-09-18
    Type: Initial release
  • Version 1.1: 2019-09-25
    Changes: Data collection, Structure summary
  • Version 1.2: 2019-12-04
    Changes: Structure summary