4QZV

Bat-derived coronavirus HKU4 uses MERS-CoV receptor human CD26 for cell entry


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.592 Å
  • R-Value Free: 0.224 
  • R-Value Work: 0.190 

wwPDB Validation 3D Report Full Report


This is version 1.0 of the entry. See complete history

Literature

Bat Origins of MERS-CoV Supported by Bat Coronavirus HKU4 Usage of Human Receptor CD26.

Wang, Q.H.Qi, J.X.Yuan, Y.Xuan, Y.Han, P.Wan, Y.Ji, W.Li, Y.Wu, Y.Wang, J.Iwamoto, A.Woo, P.C.Yuen, K.Y.Yan, J.Lu, G.W.Gao, G.F.

(2014) Cell Host Microbe 16: 328-337

  • DOI: 10.1016/j.chom.2014.08.009

  • PubMed Abstract: 
  • The recently reported Middle East respiratory syndrome coronavirus (MERS-CoV) is phylogenetically closely related to the bat coronaviruses (BatCoVs) HKU4 and HKU5. However, the evolutionary pathway of MERS-CoV is still unclear. A receptor binding dom ...

    The recently reported Middle East respiratory syndrome coronavirus (MERS-CoV) is phylogenetically closely related to the bat coronaviruses (BatCoVs) HKU4 and HKU5. However, the evolutionary pathway of MERS-CoV is still unclear. A receptor binding domain (RBD) in the MERS-CoV envelope-embedded spike protein specifically engages human CD26 (hCD26) to initiate viral entry. The high sequence identity in the viral spike protein prompted us to investigate if HKU4 and HKU5 can recognize hCD26 for cell entry. We found that HKU4-RBD, but not HKU5-RBD, binds to hCD26, and pseudotyped viruses embedding HKU4 spike can infect cells via hCD26 recognition. The structure of the HKU4-RBD/hCD26 complex revealed a hCD26-binding mode similar overall to that observed for MERS-RBD. HKU4-RBD, however, is less adapted to hCD26 than MERS-RBD, explaining its lower affinity for receptor binding. Our findings support a bat origin for MERS-CoV and indicate the need for surveillance of HKU4-related viruses in bats.


    Organizational Affiliation

    CAS Key Laboratory of Pathogenic Microbiology and Immunology, Institute of Microbiology, Chinese Academy of Sciences, Beijing 100101, China.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Dipeptidyl peptidase 4
A, C
734Homo sapiensMutation(s): 0 
Gene Names: DPP4 (ADCP2, CD26)
EC: 3.4.14.5
Find proteins for P27487 (Homo sapiens)
Go to Gene View: DPP4
Go to UniProtKB:  P27487
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Spike protein S1
B, D
246Bat coronavirus HKU4Mutation(s): 0 
Gene Names: S
Find proteins for A3EX94 (Bat coronavirus HKU4)
Go to UniProtKB:  A3EX94
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
BMA
Query on BMA

Download SDF File 
Download CCD File 
A, C
BETA-D-MANNOSE
C6 H12 O6
WQZGKKKJIJFFOK-RWOPYEJCSA-N
 Ligand Interaction
NAG
Query on NAG

Download SDF File 
Download CCD File 
A, C
N-ACETYL-D-GLUCOSAMINE
C8 H15 N O6
OVRNDRQMDRJTHS-FMDGEEDCSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.592 Å
  • R-Value Free: 0.224 
  • R-Value Work: 0.190 
  • Space Group: P 2 21 21
Unit Cell:
Length (Å)Angle (°)
a = 78.801α = 90.00
b = 203.166β = 90.00
c = 207.753γ = 90.00
Software Package:
Software NamePurpose
PHASERphasing
HKL-2000data reduction
HKL-2000data scaling
PHENIXrefinement
Blu-Icedata collection

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2014-10-29
    Type: Initial release