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
. 1988 Oct;3(4):405-13.

Mouse p53 blocks SV40 DNA replication in vitro and downregulates T antigen DNA helicase activity

H W Stürzbecher  1 , R Brain, T Maimets, C Addison, K Rudge, J R Jenkins
Affiliations
  • PMID: 2856250

Mouse p53 blocks SV40 DNA replication in vitro and downregulates T antigen DNA helicase activity

H W Stürzbecher et al. Oncogene. 1988 Oct.

Abstract

Immunopurified mouse p53 proteins were used to gain experimental access to the mechanisms underlying nonprimate p53 directed suppression of SV40 origin directed DNA replication in vivo. In replication competent HeLa cell extracts containing exogenous T antigen, mouse p53 blocks T antigen dependent DNA synthesis as in vivo. However, in transcription competent HeLa extracts, mouse p53 has no effect either on overall transcription or on the ability of immunopurified T antigen to downregulate SV40 early transcription. We show that although mouse p53 has no significant effect on T antigen encoded activities such as ATPase and DNA binding, helicase activity is somewhat reduced suggesting that the in vivo suppression by mouse p53 of SV40 replication may be due, at least in part, to direct modulation of T antigen function.

PubMed Disclaimer

Similar articles

See all similar articles

Cited by

See all "Cited by" articles

MeSH terms

LinkOut - more resources