Biological Assembly 1  

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Global Symmetry: Cyclic - C2  (3D View)
Global Stoichiometry: Homo 2-mer - A2 

Biological assembly 1 assigned by authors and generated by PISA (software)

Macromolecule Content

• Total Structure Weight: 45767.66 
• Atom Count: 2944 
• Residue Count: 406 
• Unique protein chains: 1

2GHV

Crystal structure of SARS spike protein receptor binding domain

• DOI: 10.2210/pdb2GHV/pdb

• Classification: VIRAL PROTEIN
• Organism(s): Human SARS coronavirus
• Expression System: Spodoptera frugiperda


• Deposited: 2006-03-27 Released: 2006-09-19 
• Deposition Author(s): Hwang, W.C., Lin, Y., Santelli, E., Sui, J., Jaroszewski, L., Stec, B., Farzan, M., Marasco, W.A., Liddington, R.C.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.2 Å
• R-Value Free: 0.213 
• R-Value Work: 0.182 

Literature

Structural basis of neutralization by a human anti-severe acute respiratory syndrome spike protein antibody, 80R.

Hwang, W.C., Lin, Y., Santelli, E., Sui, J., Jaroszewski, L., Stec, B., Farzan, M., Marasco, W.A., Liddington, R.C.

(2006) J.Biol.Chem. 281: 34610-34616

• PubMed: 16954221 
• DOI: 10.1074/jbc.M603275200
• Primary Citation of Related Structures:  
  2GHW


• PubMed Abstract: 
  

Severe acute respiratory syndrome (SARS) is a newly emerged infectious disease that caused pandemic spread in 2003. The etiological agent of SARS is a novel coronavirus (SARS-CoV). The coronaviral surface spike protein S is a type I transmembrane glycoprotein that mediates initial host binding via the cell surface receptor angiotensin-converting enzyme 2 (ACE2), as well as the subsequent membrane fusion events required for cell entry. Here we report the crystal structure of the S1 receptor binding domain (RBD) in complex with a neutralizing antibody, 80R, at 2.3 A resolution, as well as the structure of the uncomplexed S1 RBD at 2.2 A resolution. We show that the 80R-binding epitope on the S1 RBD overlaps very closely with the ACE2-binding site, providing a rationale for the strong binding and broad neutralizing ability of the antibody. We provide a structural basis for the differential effects of certain mutations in the spike protein on 80R versus ACE2 binding, including escape mutants, which should facilitate the design of immunotherapeutics to treat a future SARS outbreak. We further show that the RBD of S1 forms dimers via an extensive interface that is disrupted in receptor- and antibody-bound crystal structures, and we propose a role for the dimer in virus stability and infectivity.

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Organizational Affiliation: 

Infectious and Inflammatory Disease Center, Burnham Institute for Medical Research, La Jolla, California 92037, USA.

Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details
Spike glycoprotein	E, C	203	Human SARS coronavirus	Mutation(s): 0  Gene Names: S
Find proteins for P59594 (Human SARS coronavirus) Go to UniProtKB:  P59594

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.2 Å
• R-Value Free: 0.213 
• R-Value Work: 0.182 
• Space Group: P 4₃ 2₁ 2

Unit Cell:

Length (Å)	Angle (°)
a = 75.884	α = 90.00
b = 75.884	β = 90.00
c = 235.863	γ = 90.00

Software Package:

Software Name	Purpose
Blu-Ice	data collection
REFMAC	refinement
HKL-2000	data scaling
PHASER	phasing

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2006-03-27 
• Released Date: 2006-09-19 
• Deposition Author(s): Hwang, W.C., Lin, Y., Santelli, E., Sui, J., Jaroszewski, L., Stec, B., Farzan, M., Marasco, W.A., Liddington, R.C.

Revision History 

• Version 1.0: 2006-09-19
  Type: Initial release
• Version 1.1: 2008-05-01
  Type: Version format compliance
• Version 1.2: 2011-07-13
  Type: Advisory, Version format compliance