Cited by 110Virus-based gene therapy researchEnzyme Structure and FunctionAdvanced Electron Microscopy Techniques and Applications

The DOI matches its Crossref record; 72 of the 76 references it cites were found in a registry or an index.

Heparin binding induces conformational changes in Adeno-associated virus serotype 2

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Levy, Hazel C., Bowman, Valorie D., Govindasamy, Lakshmanan, McKenna, Robert, Nash, Kevin, Warrington, Kenneth, Chen, Weijun, Muzyczka, Nicholas, Yan, Xiaodong, Baker, Timothy S., Agbandje-McKenna, Mavis·2009·Journal of Structural Biology

Abstract

Adeno-associated virus serotype 2 (AAV2) uses heparan sulfate proteoglycan as a cell surface-attachment receptor. In this study the structures of AAV2 alone and complexed with heparin were determined to approximately 18A resolution using cryo-electron microscopy and three-dimensional image reconstruction. A difference map showed positive density, modeled as heparin, close to the icosahedral twofold axes and between the protrusions that surround the threefold axes of the capsid. Regions of the model near the threefold place the receptor in close proximity to basic residues previously identified as part of the heparin binding site. The region of the model near the twofold axes identifies a second contact site, not previously characterized but which is also possibly configured by heparin binding. The difference map also revealed two significant conformational changes: (I) at the tops of the threefold protrusions, which have become flattened in the complex, and (II) at the fivefold axes where the top of the channel is widened possibly in response to movement of the HI loops in the capsid proteins. Ordered density in the interior of the capsid in the AAV2-heparin complex was interpreted as nucleic acid, consistent with the presence of non-viral DNA in the expressed capsids.

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Metadata

Authors
Levy, H. C., Bowman, V. D., Govindasamy, L., McKenna, R., Nash, K., Warrington, K., Chen, W., Muzyczka, N., Yan, X., Baker, T. S., & Agbandje-McKenna, M.
Affiliations
  • University of Florida (US)
  • Purdue University West Lafayette (US)
  • University of California San Diego (US)
Venue
Journal of Structural Biology
Publisher
Elsevier BV
Published
2009-03
Volume
165
Issue
3
Pages
146-156
ISSN
1047-8477 (ISSN-L)
OpenAlex
W2156683693
Cited by
110
References
76
Citations by year
2026: 4 · 2025: 1 · 2024: 2 · 2023: 3 · 2022: 3 · 2021: 8 · 2020: 3 · 2019: 10 · 2018: 2 · 2017: 5 · 2016: 7 · 2015: 8 · 2014: 10 · 2013: 11 · 2012: 10
FWCI
4.13
Type
journal article
Language
en
Open access
Locations
  • Journal of Structural Biology (publishedVersion)
  • PubMed (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
Funders
  • National Institutes of Health (4r37gm033050-27)
  • National Heart, Lung, and Blood Institute (P01HL059412, P01HL051811)
  • National Institute of General Medical Sciences (R37GM-033050)
  • National Institute of Allergy and Infectious Diseases (P01AI045976)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Virus-based gene therapy research
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Structural Biology › Enzyme Structure and Function
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Structural Biology › Advanced Electron Microscopy Techniques and Applications
Keywords
AAV2, heparin binding, capsid conformational change, heparan sulfate proteoglycans, capsid structure
MeSH terms
Dependovirus, Capsid, Heparin, Image Processing, Computer-Assisted, Models, Molecular, Protein Conformation, Virion, Mutagenesis, Site-Directed, Nucleocapsid, Cryoelectron Microscopy, Capsid Proteins

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