5M0R

Cryo-EM reconstruction of the maedi-visna virus (MVV) strand transfer complex


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 8.2 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

A supramolecular assembly mediates lentiviral DNA integration.

Ballandras-Colas, A.Maskell, D.P.Serrao, E.Locke, J.Swuec, P.Jonsson, S.R.Kotecha, A.Cook, N.J.Pye, V.E.Taylor, I.A.Andresdottir, V.Engelman, A.N.Costa, A.Cherepanov, P.

(2017) Science 355: 93-95

  • DOI: 10.1126/science.aah7002
  • Primary Citation of Related Structures:  5LLJ, 5M0Q, 5T3A

  • PubMed Abstract: 
  • Retroviral integrase (IN) functions within the intasome nucleoprotein complex to catalyze insertion of viral DNA into cellular chromatin. Using cryo-electron microscopy, we now visualize the functional maedi-visna lentivirus intasome at 4.9 angstrom ...

    Retroviral integrase (IN) functions within the intasome nucleoprotein complex to catalyze insertion of viral DNA into cellular chromatin. Using cryo-electron microscopy, we now visualize the functional maedi-visna lentivirus intasome at 4.9 angstrom resolution. The intasome comprises a homo-hexadecamer of IN with a tetramer-of-tetramers architecture featuring eight structurally distinct types of IN protomers supporting two catalytically competent subunits. The conserved intasomal core, previously observed in simpler retroviral systems, is formed between two IN tetramers, with a pair of C-terminal domains from flanking tetramers completing the synaptic interface. Our results explain how HIV-1 IN, which self-associates into higher-order multimers, can form a functional intasome, reconcile the bulk of early HIV-1 IN biochemical and structural data, and provide a lentiviral platform for design of HIV-1 IN inhibitors.


    Organizational Affiliation

    Chromatin Structure and Mobile DNA, The Francis Crick Institute, London, NW1 1AT, UK.




Macromolecules

Find similar proteins by: Sequence  |  Structure


Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
integrase
A, B, C, D, E, F, G, H, I, J, K, L, M, N, O, P
281Maedi visna virus (strain KV1772)Gene Names: pol
EC: 3.1.-.-, 2.7.7.49, 3.6.1.23, 3.1.26.13, 2.7.7.-, 3.1.13.2, 3.4.23.-
Find proteins for P35956 (Maedi visna virus (strain KV1772))
Go to UniProtKB:  P35956
Entity ID: 2
MoleculeChainsLengthOrganism
vDNA, non-transfered strandQ,S21Visna lentivirus (strain 1514)
Entity ID: 3
MoleculeChainsLengthOrganism
vDNA-tDNA, transferred strand, joined to a model tDNAR,T50Visna lentivirus (strain 1514)
Entity ID: 4
MoleculeChainsLengthOrganism
tDNAU,V23synthetic construct
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 8.2 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History & Funding Information

Deposition Data


Funding OrganizationCountryGrant Number
National Institutes of HealthUnited StatesGM082251

Revision History 

  • Version 1.0: 2017-01-18
    Type: Initial release
  • Version 1.1: 2017-01-25
    Type: Source and taxonomy
  • Version 1.2: 2017-08-02
    Type: Data collection, Derived calculations