Skip to main page content
U.S. flag

An official website of the United States government

Dot gov

The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site.

Https

The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.

Access keys NCBI Homepage MyNCBI Homepage Main Content Main Navigation
. 1990 Jun;87(11):4401-5.
doi: 10.1073/pnas.87.11.4401.

Early transcription factor subunits are encoded by vaccinia virus late genes

P D Gershon  1 , B Moss
Affiliations

Early transcription factor subunits are encoded by vaccinia virus late genes

P D Gershon et al. Proc Natl Acad Sci U S A. 1990 Jun.

Abstract

The vaccinia virus early transcription factor (VETF) was shown to be a virus-encoded heterodimer. The gene for the 82-kDa subunit was identified as open reading frame (ORF) A8L, based on the N-terminal sequence of factor purified by using DNA-affinity magnetic beads. The 70-kDa subunit of VETF was refractory to N-terminal analysis, and so N-terminal sequences were obtained for three internal tryptic peptides. All three peptides matched sequences within ORF D6R. ORFs A8L and D6R are located within the central region of the vaccinia virus genome and are separated by about 13,600 base pairs. Proteins corresponding to the 3' ends of ORFs A8L and D6R were overexpressed in Escherichia coli and used to prepare antisera that bound to the larger and smaller subunits, respectively, of affinity-purified VETF. Immunoblot analysis of proteins from infected cells indicated that both subunits are expressed exclusively in the late phase of infection, just prior to their packaging in virus particles. The two subunits of VETF have no significant local or overall amino acid sequence homology to one another, to other entries in biological sequence data bases including bacterial sigma factors, or to recently determined sequences of some eukaryotic transcription factors. The 70-kDa subunit, however, has motifs in common with a super-family of established and putative DNA and RNA helicases.

PubMed Disclaimer

Similar articles

See all similar articles

Cited by

See all "Cited by" articles

References

    1. Nature. 1989 Sep 28;341(6240):299-303 - PubMed
    1. Nature. 1990 Apr 26;344(6269):830-6 - PubMed
    1. Science. 1989 Nov 17;246(4932):911-6 - PubMed
    1. J Biol Chem. 1974 May 25;249(10):3281-6 - PubMed
    1. Proc Natl Acad Sci U S A. 1990 Jun;87(11):4023-7 - PubMed

Substances

LinkOut - more resources