Simian virus 40 major late promoter: a novel tripartite structure that includes intragenic sequences - PubMed (original) (raw)

Simian virus 40 major late promoter: a novel tripartite structure that includes intragenic sequences

D E Ayer et al. Mol Cell Biol. 1988 May.

Abstract

Unlike most genes transcribed by RNA polymerase II, the simian virus 40 late transcription unit does not have a TATA box. To determine what sequences are required for initiation at the major late mRNA cap site of simian virus 40, clustered point mutations were constructed and tested for transcriptional activity in vitro and in vivo. Three promoter elements were defined. The first is centered 31 base pairs upstream of the cap site in a position normally reserved for a TATA box. The second is at the cap site. The third occupies a novel position centered 28 base pairs downstream of the cap site within a protein-coding sequence. The ability of RNA polymerase II to recognize this promoter suggests that there is greater variation in promoter architecture than had been believed previously.

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