Abstract:
:The three primary capsid proteins (A, B, and C) of adeno-associated viruses have been shown previously to contain overlapping amino acid sequences (R. McPherson and J. Rose, J. Virol. 46:523-529, 1983). In the present study we demonstrate definitively that these proteins are encoded in the right half of the adeno-associated virus 2 genome, and one or both of the smallest adeno-associated RNA species (2.3- or 2.6-kilobase RNA) account for their synthesis. Protein A (90 kilodaltons) apparently initiates from a site within the intervening sequence, which is intact in the larger (unspliced) 2.6-kilobase mRNA, and may read through one or more termination codons, including a strong stop signal (UAA) that lies 31 bases downstream from the end of the intervening sequence. Proteins B (72 kilodaltons) and C (60 kilodaltons) are not derived from protein A but apparently originate from independent, in-frame initiations that lie downstream from the splice junction. It thus seems likely that production of the three adeno-associated virus capsid proteins involves at least two mRNA species. The B and C proteins presumably arise from the spliced 2.3-kilobase RNA, whereas protein A should be generated by the 2.6-kilobase RNA or a hitherto unidentified spliced RNA species.
journal_name
J Viroljournal_title
Journal of virologyauthors
Janik JE,Huston MM,Rose JAdoi
10.1128/JVI.52.2.591-597.1984subject
Has Abstractpub_date
1984-11-01 00:00:00pages
591-7issue
2eissn
0022-538Xissn
1098-5514journal_volume
52pub_type
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