Human endogenous retrovirus (HML2) mature capsid assembly, D5 capsule

Experimental Data Snapshot

  • Resolution: 3.18 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

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Structural basis for Fullerene geometry in a human endogenous retrovirus capsid.

Acton, O.Grant, T.Nicastro, G.Ball, N.J.Goldstone, D.C.Robertson, L.E.Sader, K.Nans, A.Ramos, A.Stoye, J.P.Taylor, I.A.Rosenthal, P.B.

(2019) Nat Commun 10: 5822-5822

  • DOI: https://doi.org/10.1038/s41467-019-13786-y
  • Primary Citation of Related Structures:  
    6SA9, 6SAI, 6SSJ, 6SSK, 6SSL, 6SSM

  • PubMed Abstract: 

    The HML2 (HERV-K) group constitutes the most recently acquired family of human endogenous retroviruses, with many proviruses less than one million years old. Many maintain intact open reading frames and provirus expression together with HML2 particle formation are observed in early stage human embryo development and are associated with pluripotency as well as inflammatory disease, cancers and HIV-1 infection. Here, we reconstruct the core structural protein (CA) of an HML2 retrovirus, assemble particles in vitro and employ single particle cryogenic electron microscopy (cryo-EM) to determine structures of four classes of CA Fullerene shell assemblies. These icosahedral and capsular assemblies reveal at high-resolution the molecular interactions that allow CA to form both pentamers and hexamers and show how invariant pentamers and structurally plastic hexamers associate to form the unique polyhedral structures found in retroviral cores.

  • Organizational Affiliation

    Structural Biology of Cells and Viruses Laboratory, The Francis Crick Institute, 1 Midland Road, London, NW1 1AT, UK.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Endogenous retrovirus group K member 24 Gag polyprotein
A, B, C, D, E
A, B, C, D, E, F, G, H, I
248Homo sapiensMutation(s): 0 
Gene Names: ERVK-24
Find proteins for P63145 (Homo sapiens)
Explore P63145 
Go to UniProtKB:  P63145
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP63145
Sequence Annotations
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Resolution: 3.18 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 
EM Software:
TaskSoftware PackageVersion

Structure Validation

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Entry History & Funding Information

Deposition Data

Funding OrganizationLocationGrant Number
The Francis Crick InstituteUnited KingdomFC001143
The Francis Crick InstituteUnited KingdomFC001178
Wellcome TrustUnited Kingdom108014/Z/15/Z

Revision History  (Full details and data files)

  • Version 1.0: 2020-01-01
    Type: Initial release