Biological Assembly 1  

 3D View: Structure | 1D-3D View | Electron Density | Validation Report

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Homo 3-mer - A3 

Biological assembly 1 assigned by authors.

Macromolecule Content

• Total Structure Weight: 410.48 kDa 
• Atom Count: 24541 
• Modelled Residue Count: 3139 
• Deposited Residue Count: 3684 
• Unique protein chains: 1

5X5B

Prefusion structure of SARS-CoV spike glycoprotein, conformation 2

• PDB DOI: 10.2210/pdb5X5B/pdb
• EM Map EMD-6705:EMDBEMDataResource

• Classification: VIRAL PROTEIN
• Organism(s): SARS coronavirus BJ01
• Expression System: Spodoptera frugiperda
• Mutation(s): No 


• Deposited: 2017-02-15 Released: 2017-05-03 
• Deposition Author(s): Yuan, Y., Cao, D., Zhang, Y., Ma, J., Qi, J., Wang, Q., Lu, G., Wu, Y., Yan, J., Shi, Y., Zhang, X., Gao, G.F.
• Funding Organization(s): the Strategic Priority Research Program of the Chinese Academy of Sciences, the China Ministry of Science and Technology (MOST) National 973 Project, the National Key Research and Development Program of China, the China National Grand S&T Special Project, the Natural Science Foundation of China, the Excellent Young Scientist Program from the NSFC, the Excellent Young Scientist Program of the Chinese Academy of Sciences and the Youth Innovation Promotion Association CAS, National Thousand (Young) Talents Program, leading principal investigator of the NSFC Innovative Research Group

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Experimental Data Snapshot

• Method: ELECTRON MICROSCOPY
• Resolution: 3.70 Å
• Aggregation State: PARTICLE 
• Reconstruction Method: SINGLE PARTICLE 

Literature

Cryo-EM structures of MERS-CoV and SARS-CoV spike glycoproteins reveal the dynamic receptor binding domains

Yuan, Y., Cao, D., Zhang, Y., Ma, J., Qi, J., Wang, Q., Lu, G., Wu, Y., Yan, J., Shi, Y., Zhang, X., Gao, G.F.

(2017) Nat Commun 8: 15092-15092

• PubMed: 28393837 
• DOI: 10.1038/ncomms15092
• Primary Citation of Related Structures:  
  5X4R, 5X4S, 5X58, 5X59, 5X5B, 5X5C, 5X5F


• PubMed Abstract: 
  

The envelope spike (S) proteins of MERS-CoV and SARS-CoV determine the virus host tropism and entry into host cells, and constitute a promising target for the development of prophylactics and therapeutics. Here, we present high-resolution structures of the trimeric MERS-CoV and SARS-CoV S proteins in its pre-fusion conformation by single particle cryo-electron microscopy. The overall structures resemble that from other coronaviruses including HKU1, MHV and NL63 reported recently, with the exception of the receptor binding domain (RBD). We captured two states of the RBD with receptor binding region either buried (lying state) or exposed (standing state), demonstrating an inherently flexible RBD readily recognized by the receptor. Further sequence conservation analysis of six human-infecting coronaviruses revealed that the fusion peptide, HR1 region and the central helix are potential targets for eliciting broadly neutralizing antibodies.

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Organizational Affiliation: 

National Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention (China CDC), Beijing 102206, China.

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Spike glycoprotein	A, B, C	1228	SARS coronavirus BJ01	Mutation(s): 0
UniProt
Find proteins for P59594 (Severe acute respiratory syndrome coronavirus) Explore P59594  Go to UniProtKB:  P59594

Experimental Data & Validation

Experimental Data

• Method: ELECTRON MICROSCOPY
• Resolution: 3.70 Å
• Aggregation State: PARTICLE 
• Reconstruction Method: SINGLE PARTICLE 

Structure Validation

Entry History & Funding Information

Deposition Data

• Deposited Date: 2017-02-15 
• Released Date: 2017-05-03 
Deposition Author(s): Yuan, Y., Cao, D., Zhang, Y., Ma, J., Qi, J., Wang, Q., Lu, G., Wu, Y., Yan, J., Shi, Y., Zhang, X., Gao, G.F.

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Funding Organization	Location	Grant Number
the Strategic Priority Research Program of the Chinese Academy of Sciences	China	XDB08020100
the China Ministry of Science and Technology (MOST) National 973 Project	China	2013CB531502
the China Ministry of Science and Technology (MOST) National 973 Project	China	2014CB542503
the National Key Research and Development Program of China	China	2016YFD0500300
the China National Grand S&T Special Project	China	2014ZX10004-001-006
the Natural Science Foundation of China	China	31570874
the Natural Science Foundation of China	China	81461168030
the Excellent Young Scientist Program from the NSFC	China	81622031
the Excellent Young Scientist Program of the Chinese Academy of Sciences and the Youth Innovation Promotion Association CAS	China	2015078
National Thousand (Young) Talents Program	China	--
leading principal investigator of the NSFC Innovative Research Group	China	81321063

Revision History  

• Version 1.0: 2017-05-03
  Type: Initial release
  
• Version 1.1: 2017-05-24
  Changes: Refinement description