Cited by 186HIV Research and TreatmentT-cell and Retrovirus StudiesEnzyme Structure and Function

High-resolution structure of a retroviral capsid hexameric amino-terminal domain

Mortuza, Gulnahar B., Haire, Lesley F., Stevens, Anthony, Smerdon, Stephen J., Stoye, Jonathan P., Taylor, Ian A.·2004·Nature

Abstract

Retroviruses are the aetiological agents of a range of human diseases including AIDS and T-cell leukaemias. They follow complex life cycles, which are still only partly understood at the molecular level. Maturation of newly formed retroviral particles is an essential step in production of infectious virions, and requires proteolytic cleavage of Gag polyproteins in the immature particle to form the matrix, capsid and nucleocapsid proteins present in the mature virion. Capsid proteins associate to form a dense viral core that may be spherical, cylindrical or conical depending on the genus of the virus. Nonetheless, these assemblies all appear to be composed of a lattice formed from hexagonal rings, each containing six capsid monomers. Here, we describe the X-ray structure of an individual hexagonal assembly from N-tropic murine leukaemia virus (N-MLV). The interface between capsid monomers is generally polar, consistent with weak interactions within the hexamer. Similar architectures are probably crucial for the regulation of capsid assembly and disassembly in all retroviruses. Together, these observations provide new insights into retroviral uncoating and how cellular restriction factors may interfere with viral replication.

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Crossref · 10.1038/nature02915

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  • While in-virus structures are currently lacking, in vitro studies indicate that the arrangement of CA in mature retroviruses is well conserved.

    “While in-virus structures are currently lacking, these in vitro studies indicate that the arrangement of CA in mature retroviruses is well conserved”

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Authors
Mortuza, G. B., Haire, L. F., Stevens, A., Smerdon, S. J., Stoye, J. P., & Taylor, I. A.
Affiliations
National Institute for Medical Research (GB)
Corresponding author
Taylor, Ian A.
Venue
Nature
Published
2004-09-23
Volume
431
Issue
7007
Pages
481-485
ISSN
  • 0028-0836 (ISSN-L)
  • 1476-4687
OpenAlex
W2055643881
Cited by
185
References
29
Citations by year
2025: 2 · 2023: 1 · 2022: 1 · 2021: 1 · 2020: 3 · 2019: 4 · 2018: 5 · 2017: 4 · 2016: 8 · 2015: 7 · 2014: 8 · 2013: 11 · 2012: 15
FWCI
6.12
Type
journal article
Language
en
Open access
closed
Locations
  • Nature (publishedVersion)
  • PubMed (publishedVersion)
  • RePEc: Research Papers in Economics (submittedVersion)
  • Science and Technology Facilities Council (submittedVersion)
Funders
National Institutes of Health
Topics
  • Life Sciences › Immunology and Microbiology › Virology › HIV Research and Treatment
  • Life Sciences › Immunology and Microbiology › Immunology › T-cell and Retrovirus Studies
  • Physical Sciences › Materials Science › Materials Chemistry › Enzyme Structure and Function
Keywords
retroviral capsid, N-terminal domain, capsid assembly, capsid disassembly, viral uncoating, Gag protein, capsid lattice, cellular restriction factors, viral replication
MeSH terms
Amino Acid Sequence, Binding Sites, Capsid, Models, Molecular, Molecular Sequence Data, Leukemia Virus, Murine, Protein Structure, Tertiary, Crystallography, X-Ray, Virus Assembly, Protein Structure, Quaternary, Capsid Proteins

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