Transcriptional Analysis of Minute Virus of Mice P4 Promoter Mutants

Overview

Journal J Virol

Publisher American Society for Microbiology

Date 1989 Dec 1

PMID 2585609

Citations 19

Authors

J K Ahn

B J Gavin

G Kumar

D C Ward

Affiliations

Soon will be listed here.

Abstract

A series of 5' deletion, internal deletion, and linker-scanning mutants of the minute virus of mice P4 promoter were constructed and analyzed for transcriptional activity in nuclear extracts of mouse A92L fibroblasts. A GC box and a TATA box essential for in vitro transcription from the P4 promoter were localized between nucleotides 150 and 180 (-55 to -25 relative to the primary RNA start site). Although this region also exhibited homologies to other transcriptional control elements, the simian virus 40 enhancer, and the adenovirus E1A enhancer, only the GC box and TATA box appear functional. These two motifs also play an essential role in vivo, although additional upstream sequences (between -139 and -55) are required for optimal transcription. DNase I footprinting, competitive gel retardation assays, and UV-photocrosslinking were used to identify Sp1-like proteins of 95 and 120 kilodaltons in A92L extracts that interact with the GC box of the minute virus of mice P4 promoter.

Citing Articles

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Characterization of the minute virus of mice P38 core promoter elements.

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