Retroviral gag gene amber codon suppression is caused by an intrinsic cis-acting component of the viral mRNA.

Abstract:

:In some type C retroviruses, translation of the pol gene appears to require translational suppression of the proximal gag amber codon. To identify the region of the viral nucleic acid responsible for synthesis of the pol gene products, a 300-base-pair DNA fragment containing the stop codon from a type C murine virus (AK virus) was inserted into the Escherichia coli lacZ gene such that the translational reading frame was maintained. Introduction of the resulting fusion gene into cells resulted in the suppression of the viral stop codon. As measured by beta-galactosidase production, suppression occurred at a frequency of approximately 10%. Suppression could occur in at least several vertebrate cell types and was not augmented by virus replication or the expression of viral gene products. This indicates that gag amber codon suppression does not require augmented levels of suppressor tRNA species.

journal_name

J Virol

journal_title

Journal of virology

authors

Panganiban AT

doi

10.1128/JVI.62.10.3574-3580.1988

subject

Has Abstract

pub_date

1988-10-01 00:00:00

pages

3574-80

issue

10

eissn

0022-538X

issn

1098-5514

journal_volume

62

pub_type

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