Cited by 612Virus-based gene therapy researchEnzyme Structure and FunctionParvovirus B19 Infection Studies

The atomic structure of adeno-associated virus (AAV-2), a vector for human gene therapy

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Xie, Qing, Bu, Weishu, Bhatia, Smita, Hare, Joan, Somasundaram, Thayumanasamy, Azzi, Arezki, Chapman, Michael S.·2002·Proceedings of the National Academy of Sciences

Abstract

The structure of the adeno-associated virus (AAV-2) has been determined to 3-A resolution by x-ray crystallography. AAV is being developed as a vector for gene therapy to treat diseases including hemophilia, cancer, and cystic fibrosis. As in the distantly related autonomous parvoviruses, the capsid protein has a beta-barrel fold, but long loops between the beta-strands share little structural homology with other parvoviruses, leading to unique surface features. Most prominent are groups of threefold-related peaks, each an intimate association of loops from two neighboring subunits. Mutations affecting cell entry and receptor binding are clustered near the positively charged side of each peak, implicating the region in attachment to the cellular receptor, heparan sulfate proteoglycan. Amino acids involved in antibody binding are in the same general vicinity. The structure will guide rational engineering of vector capsids to tailor cellular targeting and to avoid immediate neutralization by an immune system sensitized by prior exposure to AAV.

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Crossref · 10.1073/pnas.162250899

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Authors
Xie, Q., Bu, W., Bhatia, S., Hare, J., Somasundaram, T., Azzi, A., & Chapman, M. S.
Affiliations
Florida State University (US)
Venue
Proceedings of the National Academy of Sciences
Published
2002-07-22
Volume
99
Issue
16
Pages
10405-10410
ISSN
  • 0027-8424 (ISSN-L)
  • 1091-6490
OpenAlex
W1965786463
Cited by
612
References
4
Citations by year
2026: 12 · 2025: 26 · 2024: 25 · 2023: 30 · 2022: 20 · 2021: 27 · 2020: 28 · 2019: 29 · 2018: 18 · 2017: 21 · 2016: 11 · 2015: 26 · 2014: 24 · 2013: 26 · 2012: 31
FWCI
17.50
Type
journal article
Language
en
Open access
Locations
  • Proceedings of the National Academy of Sciences (publishedVersion)
  • Europe PMC (PubMed Central) (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Virus-based gene therapy research
  • Physical Sciences › Materials Science › Materials Chemistry › Enzyme Structure and Function
  • Health Sciences › Medicine › Infectious Diseases › Parvovirus B19 Infection Studies
Keywords
adeno-associated virus type 2, gene therapy vectors, beta-barrel fold, threefold symmetry, receptor binding, antibody binding sites, capsid engineering, viral entry
MeSH terms
Dependovirus, Amino Acid Sequence, Antigens, Viral, Genetic Vectors, HeLa Cells, Humans, Molecular Sequence Data, Receptors, Virus, Genetic Therapy, Crystallography, X-Ray

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