7rwt
From Proteopedia
Adeno-associated virus type 2
Structural highlights
Publication Abstract from PubMedAdeno-associated virus (AAV) are classified as non-enveloped ssDNA viruses. However, AAV capsids embedded within exosomes have been observed, and it has been suggested that the AAV membrane associated accessory protein (MAAP) may play a role in envelope-associated AAV (EA-AAV) capsid formation. Here, we observed and selected sufficient homogeneous EA-AAV capsids of AAV2, produced using the Sf9 baculoviral expression system, to determine the cryo-electron microscopy (cryo-EM) structure at 3.14 A resolution. The reconstructed map confirmed that the EA-AAV capsid, showed no significant structural variation compared to the non-envelope capsid. In addition, the Sf9 expression system used implies the notion that MAAP may enhance exosome AAV encapsulation. Furthermore, we speculate that these EA-AAV capsids may have therapeutic benefits over the currently used non-envelope AAV capsids, with advantages in immune evasion and/or improved infectivity. Structural characterization of an envelope-associated adeno-associated virus type 2 capsid.,Hull JA, Mietzsch M, Chipman P, Strugatsky D, McKenna R Virology. 2021 Oct 6;565:22-28. doi: 10.1016/j.virol.2021.09.010. PMID:34638006[1] From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. References
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