Structure of Disulphide-stabilized SARS-CoV-2 Spike Protein Trimer (x1 disulphide-bond mutant, S383C, D985C, K986P, V987P, single Arg S1/S2 cleavage site) in Closed State

Experimental Data Snapshot

  • Resolution: 3.10 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

wwPDB Validation   3D Report Full Report

This is version 4.0 of the entry. See complete history


A thermostable, closed SARS-CoV-2 spike protein trimer.

Xiong, X.Qu, K.Ciazynska, K.A.Hosmillo, M.Carter, A.P.Ebrahimi, S.Ke, Z.Scheres, S.H.W.Bergamaschi, L.Grice, G.L.Zhang, Y.Nathan, J.A.Baker, S.James, L.C.Baxendale, H.E.Goodfellow, I.Doffinger, R.Briggs, J.A.G.

(2020) Nat Struct Mol Biol 27: 934-941

  • DOI: https://doi.org/10.1038/s41594-020-0478-5
  • Primary Citation of Related Structures:  
    6ZOX, 6ZOY, 6ZOZ, 6ZP0, 6ZP1, 6ZP2

  • PubMed Abstract: 

    The spike (S) protein of SARS-CoV-2 mediates receptor binding and cell entry and is the dominant target of the immune system. It exhibits substantial conformational flexibility. It transitions from closed to open conformations to expose its receptor-binding site and, subsequently, from prefusion to postfusion conformations to mediate fusion of viral and cellular membranes. S-protein derivatives are components of vaccine candidates and diagnostic assays, as well as tools for research into the biology and immunology of SARS-CoV-2. Here we have designed mutations in S that allow the production of thermostable, disulfide-bonded S-protein trimers that are trapped in the closed, prefusion state. Structures of the disulfide-stabilized and non-disulfide-stabilized proteins reveal distinct closed and locked conformations of the S trimer. We demonstrate that the designed, thermostable, closed S trimer can be used in serological assays. This protein has potential applications as a reagent for serology, virology and as an immunogen.

  • Organizational Affiliation

    Structural Studies Division, Medical Research Council Laboratory of Molecular Biology, Cambridge, UK. xiong@mrc-lmb.cam.ac.uk.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Spike glycoprotein
A, B, C
1,247Severe acute respiratory syndrome coronavirus 2Mutation(s): 4 
Gene Names: S2
Find proteins for P0DTC2 (Severe acute respiratory syndrome coronavirus 2)
Explore P0DTC2 
Go to UniProtKB:  P0DTC2
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP0DTC2
Sequence Annotations
  • Reference Sequence


Entity ID: 2
MoleculeChains Length2D Diagram Glycosylation3D Interactions
D, E, F, G, H
D, E, F, G, H, I, J, K, L, M, N, O
Glycosylation Resources
GlyTouCan:  G42666HT
GlyCosmos:  G42666HT
GlyGen:  G42666HT
Small Molecules
Ligands 1 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
Query on NAG

Download Ideal Coordinates CCD File 
AA [auth A]
BA [auth B]
CA [auth B]
DA [auth B]
EA [auth B]
AA [auth A],
BA [auth B],
CA [auth B],
DA [auth B],
EA [auth B],
FA [auth B],
GA [auth B],
HA [auth B],
IA [auth B],
JA [auth B],
KA [auth B],
LA [auth B],
MA [auth B],
NA [auth C],
OA [auth C],
P [auth A],
PA [auth C],
Q [auth A],
QA [auth C],
R [auth A],
RA [auth C],
S [auth A],
SA [auth C],
T [auth A],
TA [auth C],
U [auth A],
UA [auth C],
V [auth A],
VA [auth C],
W [auth A],
WA [auth C],
X [auth A],
XA [auth C],
Y [auth A],
YA [auth C],
Z [auth A]
C8 H15 N O6
Experimental Data & Validation

Experimental Data

  • Resolution: 3.10 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 
EM Software:
TaskSoftware PackageVersion

Structure Validation

View Full Validation Report

Entry History & Funding Information

Deposition Data

Funding OrganizationLocationGrant Number
Medical Research Council (MRC, United Kingdom)United KingdomMC_UP_1201/16
European Research Council (ERC)European UnionERC-CoG-648432
German Research Foundation (DFG)Germany240245660 - SFB1129
Medical Research Council (MRC, United Kingdom)United KingdomMC_UP_A025_1013

Revision History  (Full details and data files)

  • Version 1.0: 2020-07-22
    Type: Initial release
  • Version 2.0: 2020-07-29
    Type: Remediation
    Reason: Carbohydrate remediation
    Changes: Advisory, Atomic model, Data collection, Derived calculations, Structure summary
  • Version 2.1: 2020-08-12
    Changes: Database references, Structure summary
  • Version 2.2: 2020-10-21
    Changes: Database references
  • Version 2.3: 2021-02-10
    Changes: Database references
  • Version 3.0: 2021-05-26
    Changes: Advisory, Atomic model, Database references, Derived calculations, Polymer sequence, Source and taxonomy, Structure summary
  • Version 4.0: 2021-06-02
    Changes: Advisory, Atomic model, Data collection, Database references, Derived calculations, Structure summary