Abstract
ABSTRACT Adeno-associated virus (AAV) is a member of the Parvoviridae , belonging to the Dependovirus genus. Currently, several distinct isolates of AAV are in development for use in human gene therapy applications due to their ability to transduce different target cells. The need to manipulate AAV capsids for specific tissue delivery has generated interest in understanding their capsid structures. The structure of AAV type 4 (AAV4), one of the most antigenically distinct serotypes, was determined to 13-Å resolution by cryo-electron microscopy and image reconstruction. A pseudoatomic model was built for the AAV4 capsid by use of a structure-based sequence alignment of its major capsid protein, VP3, with that of AAV2, to which AAV4 is 58% identical and constrained by its reconstructed density envelope. The model showed variations in the surface loops that may account for the differences in receptor binding and antigenicity between AAV2 and AAV4. The AAV4 capsid surface topology also shows an unpredicted structural similarity to that of Aleutian mink disease virus and human parvovirus B19, autonomous members of the genus, despite limited sequence homology.
Authors
11
- Eric Padron (first)
- Valorie Bowman (additional)
- Nikola Kaludov (additional)
- Lakshmanan Govindasamy (additional)
- Hazel Levy (additional)
- Phillip Nick (additional)
- Robert McKenna (additional)
- Nicholas Muzyczka (additional)
- John A. Chiorini (additional)
- Timothy S. Baker (additional)
- Mavis Agbandje-McKenna (additional)
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Dates
Type | When |
---|---|
Created | 20 years, 5 months ago (March 28, 2005, 1:47 p.m.) |
Deposited | 3 years, 6 months ago (March 5, 2022, 5:05 a.m.) |
Indexed | 2 weeks, 3 days ago (Aug. 21, 2025, 1:58 p.m.) |
Issued | 20 years, 4 months ago (April 15, 2005) |
Published | 20 years, 4 months ago (April 15, 2005) |
Published Print | 20 years, 4 months ago (April 15, 2005) |
@article{Padron_2005, title={Structure of Adeno-Associated Virus Type 4}, volume={79}, ISSN={1098-5514}, url={http://dx.doi.org/10.1128/jvi.79.8.5047-5058.2005}, DOI={10.1128/jvi.79.8.5047-5058.2005}, number={8}, journal={Journal of Virology}, publisher={American Society for Microbiology}, author={Padron, Eric and Bowman, Valorie and Kaludov, Nikola and Govindasamy, Lakshmanan and Levy, Hazel and Nick, Phillip and McKenna, Robert and Muzyczka, Nicholas and Chiorini, John A. and Baker, Timothy S. and Agbandje-McKenna, Mavis}, year={2005}, month=apr, pages={5047–5058} }