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• W2111657659 endingPage "1897" @default.
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• W2111657659 abstract "The small t antigen (st-ag) of simian virus 40 can exert pleiotropic effects on biological processes such as DNA replication, cell cycle progression and gene expression. One possible mode of achieving these effects is through stimulation of NFκB-responsive genes encoding growth factors, cytokines, transcription factors and cell cycle regulatory proteins. Indeed, a previous study has shown that st-ag enhanced NFκB-mediated transcription. This study demonstrates that promoters possessing a consensus TATA box (i.e. TATAAAAG) in the context of either NFκB- or Sp1-binding sites are trans-activated by st-ag. Overexpressing the general transcription factor hTAFII130/135, but not hTAFII28 or hTAFII80, stimulated the activity of promoters in a consensus TATA box-dependent mode. Converting the consensus TATA motif into a non-consensus TATA box strongly impaired activation by st-ag and hTAFII130/135. Conversely, mutating a non-consensus TATA motif into the consensus TATA box rendered the mutated promoter inducible by st-ag and hTAFII130/135. Mutation of the TATA box had no effect on TNFα- or RelA/p65-mediated induction of NFκB-responsive promoters, indicating a specific st-ag effect on hTAFII130/135. St-ag stimulated the intrinsic transcriptional activity of hTAFII130/135. Substitutions in the conserved HPDKGG motif in the N-terminal region or a mutation that impaired the interaction with protein phosphatase 2A abrogated the ability of st-ag to activate hTAFII130/135-mediated transcription. These results indicate that trans-activation of promoters by st-ag may depend on a consensus TATA motif and suggest that such promoters recruit the general transcription factor hTAFII130/135." @default.
• W2111657659 created "2016-06-24" @default.
• W2111657659 creator A5012019176 @default.
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• W2111657659 creator A5057337229 @default.
• W2111657659 creator A5076669745 @default.
• W2111657659 date "2003-07-01" @default.
• W2111657659 modified "2023-09-23" @default.
• W2111657659 title "A role of the TATA box and the general co-activator hTAFII130/135 in promoter-specific trans-activation by simian virus 40 small t antigen" @default.
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• W2111657659 doi "https://doi.org/10.1099/vir.0.19057-0" @default.
• W2111657659 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/12810884" @default.
• W2111657659 hasPublicationYear "2003" @default.
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